JPH04101599U - Sound field generator for electronic musical instruments - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a device that can generate a desired sound field from an electronic musical instrument such as an electronic piano. [Configuration] For example, speakers 8, _{9 1} , 9 are placed in various directions on both the left and right sides of the upper case of an electronic piano and on the chair.
_2nd class, speakers 13 ₁ , 13 ₂ and speakers 28 ₁ , 28
_2, etc., and these speakers 8, _{9 1} , 9 _{2 ,} etc. are connected to the musical sound signal generating section 34 via a front sound effect adding device 30, a side sound effect adding device 31, and a rear sound effect adding device 32. By inputting musical sound signals with desired effects added from each effect adding device 30, 31, 32 to the speaker 8 etc., a sound field similar to that of an acoustic piano or a sound field imagined by the player is created from, for example, an electronic piano.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention enables the generation of a desired sound field from an electronic musical instrument such as an electronic piano. The present invention relates to a sound field generator for an electronic musical instrument.

0002

[Problems to be solved by conventional techniques and ideas]

Conventional electronic musical instruments such as electronic pianos create a sound field that is imagined by the performer. or it is difficult to generate a sound field close to that of an acoustic keyboard instrument. Met.

0003 The purpose of this invention is to solve these problems with conventional electronic musical instruments. It is something.

0004

[Means to solve the problem]

In order to achieve the above object, the sound field generating device for an electronic musical instrument according to claim 1 provides a sound field generating device for an electronic musical instrument. For electronic musical instruments that have a built-in signal generator and speaker, there are many parts to the case of the electronic musical instrument. A plurality of speakers are arranged facing the surface, and a connection between the musical tone signal generating section and the speakers is arranged. An effect adding device is interposed and connected to the connection circuit, and the effect adding device is connected to each speaker. The desired sound field is output from the electronic musical instrument by inputting the musical sound signal with the desired effect added. is characterized in that it is made to occur. The sound field generating device according to claim 2 is the sound field generating device according to claim 1. In addition to the configuration described above, speakers are placed on the performance chair facing in various directions, and each The feature is that a musical tone signal with a desired effect is input to the speaker. Ru.

[0005]

[Effect]

Adding effects to multiple speakers placed in various directions in the case of an electronic musical instrument A musical tone signal with desired effects added from each position, that is, frequency components and phase components. , by inputting musical tone signals with different time components, amplitude components, etc. An image of a sound field or performer similar to an acoustic keyboard instrument from a musical instrument, for example. A sound field is created.

[0006] Multiple speakers are placed on the performer's chair, facing in various directions, and each speaker is placed in front of it. If you input a musical sound signal similar to the one described above, a sound field that is even closer to the desired sound field will be created. It will be done.

[0007]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an upper case of an electronic musical instrument, such as an electronic piano, whose upper surface can be opened freely, and speaker assemblies 2 ₁ and 2 ₂ are arranged on both left and right sides of the shelf board, and the upper case A resonance box 4 communicating with the speaker assemblies 2 ₁ and 2 2 is attached to the lower part of the shelf plate between the side plates 3 and ₃ attached to both sides of the lower part of the speaker assembly 1 .

As clearly shown in FIGS. 2 and 3, the left speaker assembly 2 ₁ has an open bottom surface and has three chambers 6 ₁ , which are internally partitioned by partition plates 5 and 5 and do not interfere with each other. 6 ₂ , 6 ₃ are formed, a left side speaker 8 attached to the chamber 6 ₁ , a front speaker 9 ₁ , 9 ₂ attached to the chamber 6 ₂ , and a rear speaker 10 attached to the chamber 6 ₃ It consists of ₁ , 10 ₂ . The right speaker assembly 2 ₂ has a symmetrical structure with the left speaker assembly 2 ₁ , and the right speaker 12 , front speakers 13 ₁ , 13 ₂ , and rear speaker 14 ₁ are arranged in three chambers in the box 11 that do not interfere with each other. 14 ₂ is installed.

0010 The speaker assembly 2₁,2₂The shelf board 15 that fixes the Uni, speaker assembly 2₁,2₂Through holes 16 are provided at positions corresponding to each chamber of₁,16₂,16 ₃ and 17₁,17₂,17₃has. The resonance box 4 attached to the bottom of the shelf board 15 is , as shown in FIGS. 4 and 5, each chamber 6₁,6₂,6₃The partition plate 18 corresponds to Resonance chamber 19 divided into₁,19₂,19₃and corresponding to each room in Box 11 above. Resonance chamber 20 partitioned by partition plate 18₁,20₂,20₃has a resonance chamber 19₂and 20₂front side and resonance chamber 19₃and 20₃The rear side emits bass to the outside. A baffle 22 is provided on the front surface of the resonance box 4. It is being

The front speakers 9 ₁ , 9 ₂ and 13 ₁ , 13 ₂ are speakers mainly for providing sound directly to the performer, and the speakers 9 ₁ and 13 ₁ have speakers that extend to high frequencies and have wide directivity. Speakers 9 ₂ and 13 ₂ have sufficient bass driving power to drive the resonance chambers 19 ₂ and 20 ₂ of the resonance box 4.

[0012]The left side speaker 8 and the right side speaker 12 are not required to have such a wide band, so full range units are used. The rear speakers 10 ₁ , 10 ₂ , 14 ₁ , 1 4 ₂ are used to form a sound field at the rear, and have the same performance as the front speakers 9 ₁ , 9 ₂ and 13 ₁ , 1 3 ₂ . do.

[0013] FIG. 6 shows a performer's chair 23 according to an embodiment of the present invention. A speaker assembly 25 and a resonance box 26 are provided.

Although not shown, the speaker assembly 25 includes a box 27 whose lower end is open and whose interior is partitioned by a partition plate to form four chambers that do not interfere with each other, and a front speaker 28 ₁ attached to each chamber. , a rear speaker 28 ₂ , a left speaker 28 ₃ and a right speaker 28 ₄ (FIG. 7). As shown in FIG. 8, the resonance box 26 joined to the lower part of the speaker assembly 25 includes resonance chambers 29 ₁ , 29 ₂ , 29 ₃ and The resonance chambers 29 ₂ and _{29 3 are} provided with cylindrical bodies 30 ₁ and 30 ₂ that are open at the front and back sides and emit low frequency sounds.

Both the front speaker 28 ₁ and the rear speaker 28 ₂ have sufficient bass reproduction power to drive the lower resonance box 26 , and the left speaker 28 ₃ and right speaker 28 ₄ are full range speakers. is sufficient.

[0016] 9 and 10 are block diagrams of embodiments of the present invention.

The front speakers 9 ₁ , 9 ₂ of the left speaker assembly 2 ₁ and the front speakers 13 ₁ , 13 ₂ of the right speaker assembly 2 ₂ are the left channel signal and right channel signal of the front sound effect adding device 31 . The side speakers 8 and 12 are connected to the L and R terminals of the side sound effect adding device 32, respectively, and the rear speakers 10 ₁ , 10 ₂ and 14 ₁ , 14 ₂ are connected to the L terminal and R terminal that output They are connected to the L terminal and R terminal of the rear sound effect adding device 33, respectively. Further, the front speaker 28 ₁ and the rear speaker 28 ₂ of the speaker assembly 25 of the chair 23 are connected to the MONO terminals of the front sound effect adding device 31 and the rear sound effect adding device 33, respectively, and the left side speaker 28 ₃ and the right side speaker 28 ₄ are connected to the L terminal and R terminal of the side sound effect adding device 32, respectively. The MONO terminal is a terminal that outputs a signal obtained by mixing a left channel signal and a right channel signal at an appropriate ratio.

[0018] The front sound effect adding device 31, the side sound effect adding device 32, and the rear sound effect adding device 33 are all connected to the musical tone signal generating section 34, and receive input from the musical tone signal generating section 34. Controls the levels of frequency components, phase components, time components, etc. of the input musical tone signal The degree of this control can be changed according to the purpose by the control circuit 35. There is.

[0019] In FIG. 9, the musical tone signal generator 34 converts the generated musical tone signal into an analog signal. Although it is designed to be input to each additional device 31, 32, 33 as an analog signal, The musical tone signal generating section 34 in FIG. 10 converts the musical tone signal into a digital signal and outputs it to each additional device. D/A conversion is performed by each additional device 31, 32, 33. and converts it into an analog signal and separates it into a right channel signal and a left channel signal. be separated.

[0020]

[Effect of the idea]

According to the present invention, since it is configured as described above, it is possible to Creates a sound field similar to that of a stick keyboard instrument or the sound field imagined by the performer. It has effects such as being able to

[Brief explanation of drawings]

[Figure 1] Slope view of one embodiment of the present invention

[Figure 2] Plan view of the main parts

[Figure 3] Back view of the speaker assembly

[Figure 4] Plan view of the shelf board

[Figure 5] Front view of the resonance box

[Figure 6] Exploded slope view of the chair

[Figure 7] Plan view of the speaker assembly installed at the bottom of the chair

[Figure 8] Cross-sectional view of the resonance box installed at the bottom of the chair

[Figure 9] Block diagram of an example of the circuit

[Figure 10] Block diagram of another example of the circuit

[Explanation of symbols]

2 ₁ , 2 ₂ speaker assembly 4
Resonance box 6 ₁ , 6 ₂ , 6 ₃ chamber 7 box 8 Left side speaker 9 ₁ , 9 ₂
Front speakers 10 ₁ , 10 ₂ Rear speakers 11
Box 12 Right side speaker 13 ₁ , 13 ₂
Front speaker 14 ₁ , 14 ₂ Rear speaker 15
Shelf board 23 Chair 25
Speaker assembly 26 Resonance box 28 ₁ to 28 ₄
Speakers 31 to 33 Effect adding device 34
Musical tone signal generator

Claims (2)

[Scope of utility model registration request] 1. In an electronic musical instrument having a built-in musical tone signal generating section and a speaker, a plurality of speakers are arranged facing in various directions in a case of the electronic musical instrument, and an effect is added to a connection circuit between the musical tone signal generating section and the speakers. connect the device,
A sound field generating device for an electronic musical instrument, characterized in that a musical sound signal with a desired effect added thereto outputted from the effect adding device is inputted to each speaker, so that a desired sound field is generated from the electronic musical instrument. 2. The sound field generating device for an electronic musical instrument according to claim 1, wherein speakers are arranged facing in multiple directions on the performance chair, and a musical sound signal with a desired effect is input to each speaker.