KR101693109B1

KR101693109B1 - Light emitting speaker, light emitting speaker system, and driving method of light emitting speaker

Info

Publication number: KR101693109B1
Application number: KR1020150062290A
Authority: KR
Inventors: 지용규
Original assignee: 지용규
Priority date: 2015-05-01
Filing date: 2015-05-01
Publication date: 2017-01-05
Also published as: KR20160130122A

Abstract

The present invention provides a luminescent speaker, a luminescent loudspeaker system, and a method of driving the luminescent loudspeaker in which lights of various colors can be displayed in harmony according to a sound.
According to an aspect of the present invention, there is provided a luminescent speaker including a luminescent element and a loudspeaker, the luminescent loudspeaker generating sound and light corresponding to the input sound source, the luminescent speaker comprising: a spectral converter for determining a visible frequency corresponding to a frequency of the input sound source; A light emitting element driving circuit for controlling the light emitting element to emit light corresponding to the input sound source according to the output of the spectrum converter, and a light emitting element driven by a control signal of the light emitting element driving circuit, The spectrum converter generates a nonlinear variable, and nonlinearly divides the frequency range of the sound source according to the nonlinear parameter to generate a plurality of groups and assigns a color to each group.

Description

TECHNICAL FIELD [0001] The present invention relates to a luminescent speaker, a luminescent speaker system, and a driving method of the luminescent speaker.

The present invention relates to a luminescent speaker, a luminescent loudspeaker system, and a method of driving luminescent loudspeaker capable of simultaneously emitting sound and light.

In order to provide a variety of entertainment functions to a conventional speaker having only a function of outputting a sound, there has been proposed a speaker having a light emitting function to provide light in conjunction with a sound output from the speaker. As an example of such a luminescent speaker, according to Korean Utility Model Registration Application No. 20-2000-0003927 "luminescent speaker ", a luminescent part accommodation hole is formed in the center of the loudspeaker body, and a light emitting part Arranging the elements, and driving the light emitting elements by using a variable voltage applied to the speaker for vibrating the speaker.

As an example of another luminescent speaker, Korean Utility Model Appln. Utility Model No. 20-363195, entitled " Light Emitting Device for Speakers Adjusted in Brightness ", a loudspeaker and a luminescent body are connected in parallel and an acoustic signal supplied to the loudspeaker So that the brightness of the luminous body varies depending on the level of the output sound of the speaker.

However, the conventional luminescent speakers as described above simply display the sound frequency linearly corresponding to the light, so that there is a problem that various colors can not be expressed harmoniously.

The present invention provides a luminescent speaker, a luminescent loudspeaker system, and a method of driving the luminescent loudspeaker in which lights of various colors can be displayed in harmony according to a sound.

According to an aspect of the present invention, there is provided a luminescent speaker including a luminescent element and a loudspeaker, the luminescent loudspeaker generating sound and light corresponding to the input sound source, the luminescent speaker comprising: a spectral converter for determining a visible frequency corresponding to a frequency of the input sound source; A light emitting element driving circuit for controlling the light emitting element to emit light corresponding to the input sound source according to the output of the spectrum converter, and a light emitting element driven by a control signal of the light emitting element driving circuit, The spectrum converter generates a nonlinear variable, and nonlinearly divides the frequency range of the sound source according to the nonlinear parameter to generate a plurality of groups and assigns a color to each group.

Wherein the spectrum converter converts the frequency of the input sound source to a visible frequency,

(Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, Which is a nonlinear variable that represents a nonlinear parameter.

Also, the nonlinear variable may be 2N-1 (where N is a natural number as a reference value).

Also, the spectrum converter may include a band measurement unit for measuring a frequency frequency band of the input sound source, and a nonlinear parameter control unit for changing the nonlinear parameter based on the information measured by the band measurement unit.

Also, the nonlinear parameter controller may change the reference value N at predetermined intervals.

In addition, the non-linear variable controller may increase the reference value N when the frequency of the low frequency band is large and decrease the reference value N when the frequency of the high frequency band is large.

The spectrum converter may determine an octave from the frequency of the input sound source, and determine a brightness of the light corresponding to the octave.

In addition, the spectrum converter may determine a tone color from a frequency of the input sound source, and determine a saturation of light corresponding to the tone color.

A luminescent speaker system according to another aspect of the present invention includes a sound source supply device having a spectrum converter for determining a visible frequency corresponding to a frequency of the input sound source, a sound source supply device connected to the sound source supply device by wire or wireless, A light emitting device having a light emitting device and a speaker for generating sound and light corresponding to a visible frequency signal from the light emitting device and a light emitting device mounted on the light emitting device for emitting light corresponding to the input sound source according to an output of the spectrum converter, Wherein the spectrum converter generates a nonlinear parameter, generates a plurality of groups by nonlinearly dividing the frequency range of the sound source according to the nonlinear parameter, .

Also, the non-linear parameter may be 2N-1 (where N is a natural number as a reference value).

According to another aspect of the present invention, there is provided a method of driving a luminescent speaker, the method comprising: generating a nonlinear parameter and nonlinearly assigning a visible frequency corresponding to a frequency of the input sound source according to the nonlinear parameter; A frequency division step of dividing a frequency range to generate a plurality of groups and designating a color corresponding to each group, and a light emitting element driving step of controlling the light emitting element to emit light corresponding to the allocated visible frequency light frequency .

Here, the frequency allocation step converts the frequency of the input sound source into a visible frequency,

Also, in the frequency allocation step, the nonlinear variable may be designated as 2N-1 (where N is a natural number as a reference value).

The frequency allocation step may include a band measurement step of measuring a frequency band frequency of the input sound source and a nonlinear variable control step of changing the nonlinear parameter based on the information measured in the band measurement step.

In addition, the nonlinear parameter control step may change the reference value N at predetermined intervals.

The nonlinear parameter control step may increase the reference value N when the frequency of occurrence of the low frequency band is large and decrease the reference value N when the frequency of occurrence of the high frequency band is large.

The luminescent speaker according to an aspect of the present invention generates nonlinear parameters and nonlinearly divides the frequency range according to nonlinear parameters, so that it is possible to display various colors of light harmoniously even if the bandwidth of sound is limited.

FIG. 1A is a frequency band display diagram according to an embodiment of the present invention, and FIG. 1B is a negative-color conversion table of an original coordinate system according to an embodiment of the present invention.
2 is a schematic view illustrating a luminescent speaker according to an embodiment of the present invention.
3 is a flowchart illustrating a method of driving a luminescent speaker according to an embodiment of the present invention.
4 is a graph showing a change in audible frequency corresponding to a visible frequency according to a change in a nonlinear parameter.
FIG. 5 is a schematic diagram showing a luminescent speaker system according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention can be variously modified and may have various embodiments, and specific embodiments will be described in detail with reference to the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Figure 1a shows a negative-color conversion frequency band according to an embodiment of the present invention.

The tone is targeted to 20 ~ 20,000Hz (20Hz ~ 20KHz) band corresponding to the human audible frequency band, and the color of light is in the range of 448THz ~ 790THz of human visible frequency band. The audible frequency band and the visible frequency band are not only slightly different depending on the person or system recognizing the tone color but also the standard index of light / green / blue (RGB) standard wavelength and the development of technology related to color reproduction In particular, in this embodiment, a band suitable for implementing the principle of the present invention is arbitrarily set within the allowable range of standard wavelengths so far presented, Considering that the color discrimination power of the red long wavelength band is reduced, the band is set in such a manner that it pulls toward the short wavelength side within the blue color perception limit, thereby increasing the color discrimination power of the red series.

There is no problem in creating a negative-to-color conversion table (shown in FIG. 2) matching the frequency ratio of the twelve grades of the average rate even if there is a wavelength error range of red and blue depending on the selection of the band. Therefore, An arbitrary negative-color conversion table corresponding to the frequency ratio of the twelfth scale can be created and used.

1B shows a negative-color conversion table of the original coordinate system according to an embodiment of the present invention. The feature of the sound-color conversion method of the present invention resides in that the sound of the audio frequency band is uniquely mapped to the color (or light) of the visible frequency band, and furthermore, 1, respectively. Preferably, the tone, tone color, and pitch (octave) present in the sound correspond to the hue, saturation, and brightness of the color, respectively.

On the other hand, in the case of a sound volume of a negative size, it may correspond to a light emission area corresponding to the size of the color, or when the light emission area is the same, the volume may correspond to the lightness. A method of adjusting the brightness of a light emitting body by controlling the voltage, current, and power applied to the light emitting body according to a method or a volume corresponding to the light emitting area (i.e., the number of light emitting pixels or the number of light emitting elements such as an LED) Description will be omitted. In the present specification, only the method corresponding to the color, brightness, and saturation will be described in terms of the scale, timbre, and pitch (octave), which characterizes the present invention.

First, in order to match the scale to the color, the audio frequency band and the visible frequency band should be associated with each other at a ratio of 1: 1. As described above, although the audio frequency band and the visible frequency band can be arbitrarily set to some degree according to the designer, in the negative-color conversion table of FIG. 1B, an audible frequency band of 20 to 20,000 Hz is exemplarily shown to be about 340 to 650 nm The wavelengths of the visible frequency bands of the wavelengths. The corresponding visible frequency band is set within the entire visible frequency band in accordance with the designer's intention.

1B shows a case in which a tone of "C" is made to correspond to a reference index of red (650 nm) in accordance with a tone-color conversion method according to an embodiment of the present invention. . The color was logarithmic with respect to the visible frequency from low frequency to high frequency and was arranged clockwise with respect to the point where "C" of the negative-to-color conversion table was located. Thus, the color was changed from orange to yellow, And purple.

Also, in the case of a scale, the degrees C, #, C, D, E, E, F, F #, S, (That is, the number obtained by equally dividing the frequency band of one octave by a logarithm of the interval) based on the twelve scale represented by the numbers Ab, La, A, Bb, Respectively.

The inventors of the present invention have found that the logarithmic scale frequency ranges of the respective colors and scales are separated at regular intervals in both color and sound and accordingly the audible frequency of the "red, green and blue & The ratio of the visible frequency of the light is consistent. In other words, it can be understood that the ratio of the ratio (C): (E): sol (G) = red (R): green (G): blue (B) = 1: 4/5: 2/3.

On the other hand, the reference color corresponding to the "C" sound can be selected in accordance with the characteristics of the color conversion system or according to the designer's intention, So that the frequencies associated with the remaining scale and color can be matched. In this way, a frequency conversion formula that can be applied to all the audio frequency bands and the visible frequency bands can be derived.

However, if the visible frequency is linearly correlated with the audible frequency, the occurrence frequency of the high frequency audio frequency is relatively small and the frequency of the low frequency audible frequency is relatively large, so that the sound source corresponds to a specific color only.

On the other hand, in the direction of the circle center of the negative-color conversion table, the luminosity of the color system and the octave of the tone scale correspond to 1: 1 and are arranged in the color circle. Therefore, even if the same hue goes to the center of the circle, the brightness (or the brightness of the light) and the octave increase, and the farther away from the circle center, the lower the brightness and the octave. As a result, when the octaves are different from each other (for example, in the case of low "degrees" and high "degrees"), the characteristics of the same tone can be well displayed by adjusting the luminance level of the same color by a predetermined value.

On the other hand, the saturation represents the turbidity of the original color, which means the ratio of the pure color to the mixed color of the pure color (main wavelength) and the auxiliary color (harmonic wavelength and noise). In other words, the tone color differs depending on the degree that the waveform of the sound includes harmonic (i.e., harmonic), so that the fundamental wave of a given waveform is divided by the entire waveform (i.e., the sum of the fundamental wave and the nth harmonic) , Which corresponds to the saturation of the color. Accordingly, a clear sound, that is, a sound having a higher ratio of the fundamental wave, is expressed in a higher color saturation, and a darker sound composed of a composite wavelength can be expressed in a lower saturation color.

2 is a schematic view illustrating a luminescent speaker according to an embodiment of the present invention.

2, the luminescent speaker 101 according to an embodiment of the present invention includes a luminescent element 21 and a speaker, and generates sound and light corresponding to the input sound source. More specifically, the luminescent speaker 101 includes a spectrum converter 10 for determining a visible frequency corresponding to the frequency of the input sound source, a light emitting device (not shown) for emitting light corresponding to the sound source input in accordance with the output of the spectrum converter 10 A light emitting element driving circuit 23 for controlling the light emitting element driving circuit 23 and a light emitting element 21 driven by a control signal of the light emitting element driving circuit 23.

The spectrum converter 10 generates a nonlinear variable and nonlinearly divides the frequency range of the sound source according to the nonlinear variable to generate a plurality of groups and assigns a color to each group.

Further, the spectrum converter 10 can determine the octave from the frequency of the input sound source, and determine the brightness of the light corresponding to the octave. Further, the spectrum converter can determine the tone color from the frequency of the input sound source, and determine the saturation of the light corresponding to the tone color.

The spectrum converter 10 analyzes the sound source when the sound source is input, and correlates the audio frequency band and the visible frequency band 1: 1 in order to express the scales in color. If the audio frequency band and the visible frequency band are linearly matched, there is a problem that only a part of light appears and the remaining light is hardly displayed. In other words, frequency components less than 10 KHz often occupy the majority of the sound source, so blue or violet light is hardly visible when linear mapping is used.

To solve this problem, the spectrum converter 10 generates a nonlinear variable and changes the nonlinear variable according to the change of the frequency.

The spectrum converter 10 includes a band measurement unit 12 for measuring a frequency frequency band of an input sound source and a nonlinear parameter control unit 13 for changing nonlinear parameters based on the information measured by the band measurement unit 12, And a frequency assigning unit 14. In addition, the spectrum converter 10 may further include a plurality of amplifiers for receiving and amplifying a sound, and a Fourier transformer for Fourier-transforming the amplified signal on a frame-by-frame basis.

The frequency allocation unit 14 converts the frequency of the input sound source into a visible frequency, and converts the frequency of the sound source into a visible frequency according to Equation (1) below.

[Equation 1]

Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, It is a nonlinear variable. The nonlinear variable is 2N-1, where N is a natural number as a reference value. The initial reference value N is assigned a predetermined initial value, and the initial value may be 3 or 4. The reference value N is periodically changed by the non-linear variable controller 13. [

As shown in FIG. 4, when the magnitude of the nonlinear variable (μ) increases, the nonlinearity of the visible frequency corresponding to the audible frequency is determined as a nonlinearity . 4 is a graph showing the audible frequency and the visible frequency corresponding to Equation (1).

In addition, the frequency allocator 14 divides the audible frequency to generate a plurality of groups, and assigns colors to the respective groups. The colors may be 8 colors, 16 colors, 32 colors, 63 colors, 128 colors, and the like.

The band measuring unit 12 measures the frequency of frequency bands of a sound source input in real time. The band measuring unit 12 measures frequency of occurrence of bass and treble in the input sound source and stores information about the frequency.

The nonlinear parameter control unit 13 changes the nonlinear parameter mu based on the information measured by the band measurement unit 12. [ The non-linear variable controller changes the reference value N in a period of a predetermined time, and the period may be set to 30 seconds, 3 minutes, 10 minutes, and so on.

The nonlinear parameter controller 13 increases the reference value N when the frequency of occurrence of the low frequency band is large and decreases the reference value N when the frequency of occurrence of the high frequency band is large.

The nonlinear variable controller 13 divides the low frequency band by dividing the frequency band by increasing the nonlinearity when the frequency of occurrence of the low frequency band is large. When the frequency of occurrence of the low frequency band is large, the nonlinear variable controller 13 divides the low frequency band broadly.

As described above, if the spectrum converter 10 changes the nonlinear parameter according to the frequency frequency band of the sound source, it is possible to harmonize the light of various colors even if the frequency of the sound source is concentrated in the specific region.

The light emitting element 21 is preferably composed of a plurality of LEDs of red, green, and blue (or LEDs constituting one pixel of a 3-in-1 type by integrating the three sets of LEDs) or a variety of conventional light emitting elements. A separate light emitting device 21 may be provided for each channel, such as two or three channels and another 5.1 channel in accordance with the channel characteristics of the sound source.

The light emitting element driving circuit 23 controls the color of the light emitting element according to a signal transmitted from the spectrum converter 10. The light emitting element driving circuit 23 may include software and a plurality of circuit elements.

3 is a flowchart illustrating a method of driving a luminescent speaker according to an embodiment of the present invention.

3, the driving method of the luminescent speaker according to the present embodiment includes a Fourier transform step S101, a frequency assigning step S102, a frequency dividing step S103, and a light emitting element driving step S104 .

The Fourier transform step (S101) receives the sound, amplifies the sound, and Fourier-transforms the amplified signal on a frame-by-frame basis. Since the negative amplification and the Fourier transform can be performed using a known technique, a detailed description thereof will be omitted.

The frequency allocation step (S102) generates a nonlinear variable and nonlinearly allocates a visible frequency corresponding to the frequency of the input sound source according to the nonlinear variable.

In the frequency allocation step S102, the frequency of the input sound source is converted into a visible frequency, and the frequency of the sound source is converted into a visible frequency according to Equation (1) below.

[Equation 1]

Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, It is a nonlinear variable. In the frequency allocation step (S102), the nonlinear variable is designated as 2N-1, where N is a natural number. The initial reference value (N) is assigned as an initial value, and the initial value may be 3 or 4. N is periodically changed by the nonlinear variable control unit.

In the frequency allocation step (S102), the reference value N is periodically changed. As shown in FIG. 4, when the magnitude of the nonlinear variable (μ) increases, the nonlinear parameter (μ) is a parameter that determines the degree of nonlinearity in correspondence to the audible frequency and the visible frequency. . 4 is a graph showing the audible frequency and the visible frequency corresponding to Equation (1).

The frequency allocation step (S102) includes a band measurement step of measuring a frequency frequency band of the input sound source and a non-linear variable control step of changing the non-linear parameter based on the information measured in the band measurement step.

The band measurement step measures frequency of occurrence of a frequency band of a sound source input in real time. Band measurement step Measures frequency of bass and treble in input sound source and stores information about it.

The non-linear variable control step changes the non-linear variable based on the information measured in the band measurement step. The nonlinear variable control step changes the reference value N in a period of a predetermined time, and the period may be set to 30 seconds, 3 minutes, 10 minutes, and so on.

The non-linear variable controller unit increases the reference value N when the frequency of the low frequency band is high and reduces the reference value N when the frequency of the high frequency band is large.

In the non-linear variable control step, when the frequency of the low frequency band is large, the non-linearity is increased to subdivide the low frequency band. When the frequency of the low frequency band is large, the low frequency band is widely divided.

In the frequency dividing step S103, the frequency range of the input sound source is divided nonlinearly to generate a plurality of groups, and a color corresponding to each group is designated.

The light emitting element driving step (S104) controls the light emitting element to emit light corresponding to the assigned visible frequency light frequency. In the light emitting element driving step (S104), the light emitting element is controlled so that various colors appear according to changes in the frequency of the excitation source.

FIG. 5 is a schematic diagram showing a luminescent speaker system according to another embodiment of the present invention.

5, the luminescent speaker system 102 according to another embodiment of the present invention includes a sound source supply device 30, a luminescent speaker 40, and a light emitting device driving circuit 50. [

The sound source supply device 30 includes a spectrum converter 31 for determining a visible frequency corresponding to the frequency of the input sound source. The sound source supply device 30 is composed of a circuit including a processor and is installed separately from the luminescent speaker 40. The sound source supply device 30 may be a PC, a smart phone, a moving picture, or a music player.

The spectrum converter 31 generates a nonlinear parameter and nonlinearly divides the frequency range of the sound source according to the nonlinear parameter to generate a plurality of groups and assigns a color to each group.

Further, the spectrum converter 31 can determine the octave from the frequency of the input sound source, and determine the brightness of the light corresponding to the octave. Further, the spectrum converter can determine the tone color from the frequency of the input sound source, and determine the saturation of the light corresponding to the tone color.

The spectrum converter 31 includes a band measurement unit 32 for measuring a frequency frequency band of an input sound source and a nonlinear parameter control unit 33 for changing nonlinear parameters based on the information measured by the band measurement unit 32, And a frequency allocation unit 34. [ The spectrum converter 31 may further include a plurality of amplifiers for receiving and amplifying a sound, and a Fourier transformer for Fourier-transforming the amplified signals on a frame-by-frame basis.

The frequency allocator 34 converts the frequency of the input sound source into a visible frequency, and converts the frequency of the sound source into a visible frequency according to Equation (1) below.

[Equation 1]

Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, It is a nonlinear variable. The nonlinear variable is 2N-1, where N is a natural number as a reference value. The initial reference value N is assigned a predetermined initial value, and the initial value may be 3 or 4. The reference value N is periodically changed by the non-linear variable control unit 33. [

In addition, the frequency allocator 34 divides the audible frequency to generate a plurality of groups, and assigns colors to the respective groups. The colors may be 8 colors, 16 colors, 32 colors, 63 colors, 128 colors, and the like.

The band measuring unit 32 measures frequency bands of the sound sources input in real time. The band measuring unit 32 measures frequency of occurrence of bass and treble in the input sound source and stores information about the frequency.

The nonlinear parameter control unit 33 changes the nonlinear parameter () based on the information measured by the band measurement unit 32. The non-linear variable controller changes the reference value N in a period of a predetermined time, and the period may be set to 30 seconds, 3 minutes, 10 minutes, and so on.

The nonlinear parameter controller 33 increases the reference value N when the frequency of occurrence of the low frequency band is large and decreases the reference value N when the frequency of occurrence of the high frequency band is large.

The nonlinear variable controller 33 divides and divides the low frequency band by increasing the nonlinearity when the frequency of occurrence of the low frequency band is large, and divides the low frequency band broadly when the frequency of occurrence of the low frequency band is large.

As described above, if the spectrum converter 31 changes the nonlinear parameter according to the frequency frequency band of the sound source, the light of various colors can be harmonically expressed even if the frequency of the sound source is concentrated in the specific area.

The luminescent speaker 40 includes a luminescent element 41 driven by a control signal of the luminescent element driving circuit 50 and a loudspeaker 42 generating a sound corresponding to the input digital sound source and having a diaphragm.

The light emitting element driving circuit 50 controls the color of the light emitting element according to the signal transmitted from the spectrum converter 31. The light emitting element driving circuit 50 may include software and a plurality of circuit elements.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

101, 40: luminescent speaker
102: luminescent speaker system
10, 31: Spectrum converter
12, 32: band measuring unit
13, 33: Nonlinear variable controller
14, 34: frequency allocation unit
21, 41: Light emitting element
23, 50: light emitting element driving circuit
30: Sound source supply device
42: Speaker

Claims

1. A luminescent speaker for generating sound and light corresponding to an input sound source including a luminescent element and a loudspeaker,
A spectrum converter for determining a visible frequency corresponding to the frequency of the input sound source;
A light emitting element driving circuit for controlling the light emitting element to emit light corresponding to the input sound source according to the output of the spectrum converter; And
And a light emitting element driven by a control signal of the light emitting element driving circuit,
Wherein the spectrum converter generates a nonlinear variable, generates a plurality of groups by nonlinearly dividing a frequency range of the sound source according to the nonlinear variable, assigns a color to each group,
Wherein the spectrum converter includes a band measurement unit for measuring a frequency frequency band of the input sound source and a nonlinear parameter control unit for changing the nonlinear parameter based on the information measured by the band measurement unit.

The method according to claim 1,
Wherein the spectrum converter converts the frequency of the input sound source into a visible frequency,

(Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, Is a nonlinear variable representing
And the light-emitting loudspeaker.

3. The method of claim 2,
Wherein the nonlinear parameter is 2N-1, wherein N is a natural number as a reference value.

delete

The method according to claim 1,
Wherein the nonlinear parameter control unit changes the reference value (N) at a predetermined period of time.

6. The method of claim 5,
The nonlinear parameter controller increases the reference value N when the frequency of the frequency band lower than the reference value is large and reduces the reference value N when the frequency of the frequency band higher than the reference value is high. Luminescent speaker.

3. The method of claim 2,
Wherein the spectral converter determines an octave from the frequency of the input sound source and determines a brightness of the light corresponding to the octave.

3. The method of claim 2,
Wherein the spectrum converter determines a tone color from a frequency of the input sound source and determines a saturation of light corresponding to the tone color.

A sound source supply device having a spectrum converter for determining a visible frequency corresponding to a frequency of an input sound source;
A luminescent speaker connected to the sound source supply device by wires or wirelessly and having a light emitting element and a speaker for generating sound and light corresponding to a visible frequency signal from the sound source supply device; And
And a light emitting element driving circuit mounted on the luminescent speaker and controlling the light emitting element to emit light corresponding to the input sound source according to an output of the spectrum converter,
Wherein the spectrum converter generates a nonlinear variable, generates a plurality of groups by nonlinearly dividing a frequency range of the sound source according to the nonlinear variable, assigns a color to each group,
Wherein the spectrum converter includes a band measurement unit for measuring a frequency frequency band of an input sound source and a nonlinear variable control unit for changing the nonlinear parameter based on the information measured by the band measurement unit.

10. The method of claim 9,
Wherein the spectrum converter converts the frequency of the input sound source into a visible frequency,

(Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, Is a nonlinear variable representing
And the light emitting speaker system.

11. The method of claim 10,
Wherein the nonlinear variable is 2N-1, wherein N is a natural number as a reference value.

delete

10. The method of claim 9,
Wherein the nonlinear parameter control unit changes the reference value (N) at a predetermined period of time.

14. The method of claim 13,
The nonlinear parameter controller increases the reference value N when the frequency of the frequency band lower than the reference value is large and reduces the reference value N when the frequency of the frequency band higher than the reference value is high. Luminescent speaker system.

11. The method of claim 10,
Wherein the spectrum converter determines an octave from the frequency of the input sound source and determines a brightness of the light corresponding to the octave.

11. The method of claim 10,
Wherein the spectrum converter determines a tone color from a frequency of the input sound source and determines a saturation of light corresponding to the tone color.

A frequency allocation step of generating a nonlinear variable and nonlinearly allocating a visible frequency corresponding to a frequency of the input sound source according to the nonlinear variable;
A frequency dividing step of dividing a frequency range of an input sound source to generate a plurality of groups and designating a color corresponding to each group; And
And a light emitting element driving step of controlling the light emitting element to emit light corresponding to the assigned visible frequency light frequency,
Wherein the frequency allocating step includes a band measuring step of measuring a frequency band frequency of the input sound source and a nonlinear variable controlling step of changing the nonlinear variable based on the information measured in the measuring step. .

18. The method of claim 17,
Wherein the frequency allocating step converts the frequency of the input sound source into a visible frequency,

(Where F is the visible frequency to be obtained, Fmax is the maximum value of the output visible frequency, Fmin is the minimum value of the output visible frequency, f is the input audio frequency, fmax is the maximum value of the input audio frequency, Is a nonlinear variable representing
To the light-emitting speaker.

19. The method of claim 18,
Wherein the frequency assigning step assigns the nonlinear variable to 2N-1 (where N is a natural number as a reference value).

delete

18. The method of claim 17,
Wherein the non-linear parameter control step changes the reference value (N) at a predetermined period of time.

22. The method of claim 21,
The nonlinear parameter controlling step increases the reference value N when the frequency of the frequency band lower than the reference value is large and reduces the reference value N when the frequency of the frequency band higher than the reference value is high. The method comprising the steps of: