JPH1011078A - Adjusting device for acoustic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acoustic device in which an acoustic space can be set for a short time and easily when equalizer processing and cross over network processing are performed in plural same acoustic spaces by DSP(digital signal processor). SOLUTION: This device is an adjusting device for an acoustic device 5 transmitting acoustic characteristic adjusting information to a preamplifier 1 having a DSP 10, it is characterized in that an acoustic characteristic is adjusted digitally, while having an operation section 5d, a memory 5e storing an adjusting signal, and a transmitting means (light emitting section 5b) transmitting adjusting information. Desired performing mode is that a transmitting means is a light transmission using infrared ray. Thereby, it is not required that a professional system engineer inputs setting values of an equalizer curve and a cross over network.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device, and more particularly, to an audio device adjustment device whose acoustic characteristics can be adjusted by a digital signal processor.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a comfortable acoustic space even in vehicles such as automobiles, which are not always favorable as an environment as an acoustic space. 2. Description of the Related Art A vehicle audio system generally called a car audio system has a radio tuner, a tape deck or a CD (compact disk) deck and an amplifier for amplifying a signal output from the instrument panel or console. It is configured so that sound is output from a speaker disposed at the rear of the rear seat, the lining of the door, or the like. In the case of high-grade ones, acoustic characteristics are obtained through equalizer processing using a digital signal processor for audio signals (hereinafter simply referred to as DSP) and crossover network processing for extracting signals in a band corresponding to the characteristics of each speaker from input signals. In some cases, (frequency-sound pressure characteristics) can be adjusted. By the way, there are many uneven parts in the vehicle,
There are a material part that absorbs sound and a material part that reflects sound conversely, and its acoustic characteristics are complicated with specific peaks and dips. Therefore, in a vehicle capable of performing equalizer processing and crossover network processing using a DSP, it is difficult for a user to adjust the sound quality by listening and set a comfortable acoustic space, and a professional system engineer performs mounting and adjustment. That is the fact.

Further, even when a specialized system engineer sets another vehicle of the same vehicle type in which a comfortable acoustic space has been set by previously performing equalizer processing and crossover network processing using a DSP, Since the set values of the equalizer curve and the crossover network are stored in the system control unit (in the case of multiple units, in each system control unit), specialized system engineers are required The setting value must be input, and the setting work is not easy and requires a long time.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an equalizer and a crossover network for a plurality of identical acoustic spaces by using a DSP to set a comfortable acoustic space in a short time and easily. It is to provide an adjusting device for a device.

[0005]

In order to solve the above-mentioned problems, an audio apparatus according to the present invention is an audio apparatus adjustment apparatus for transmitting audio characteristic adjustment information to a preamplifier having a digital signal processor. It is characterized by including an operation unit for digitally adjusting and inputting adjustment information, a memory for storing adjustment signals, and a transmission unit (light emitting unit) for transmitting adjustment information. A preferred embodiment of the transmitting means is optical transmission using infrared rays.

[0006] The operation of the above means is that once D
If equalization processing and crossover network processing are performed using SP, and the set values in which a comfortable sound space is set are stored in the memory of the sound device adjustment device, equalization processing and crossover processing can be performed again in the same sound space. When performing the over-network processing, the setting values stored in the memory in the audio device adjustment device can be copied. Therefore, there is no need for a specialized system engineer to input the setting values one by one, and the setting operation can be completed easily and in a short time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1A is a schematic block diagram illustrating an example of an audio device having a DSP 10 in a preamplifier 1, and FIG. 1B is a schematic block diagram of an adjustment device 5 for an audio device. FIG. 2 is a schematic flowchart of a process performed by the microcomputer 5a included in the acoustic device adjustment device 5.

[0008] The acoustic device is schematically configured as shown in the schematic block diagram of FIG. That is, when the power of the audio device is turned on and one of the analog reproducer 7 such as a radio tuner and a tape deck or the digital reproducer 6 such as a CD deck as a sound source is selected, the contents are displayed on the display unit 2.
Is displayed and the switch 9 is operated, and a reproduction signal from the selected reproducer is sent to the DSP 10. At this time, when the analog reproducer 7 is selected, the output signal from the analog reproducer 7 is converted into a digital signal by the analog-to-digital converter 8 and then connected to the DSP 10. The microcomputer 3 stores, in the DSP 10, set values of an equalizer curve and a crossover network that make the acoustic space in a vehicle or the like comfortable, and based on the set values, the DSP 10 sets the acoustic characteristics (frequency -Sound pressure characteristic) is corrected. From the corrected signal, a digital filter 11 removes noise components higher than a reproducible frequency, and then a digital-to-analog converter 12 converts the digital signal into an analog signal. Then, the reproduction signal controlled to the volume desired by the user by the electronic volume 13 is reproduced from the power amplifier 14 through the speaker 15.

A procedure for setting a set value of an equalizer curve and a crossover network for providing a comfortable acoustic space will now be described with reference to a schematic block diagram of the acoustic device adjusting device 5 of FIG. 1B and a schematic flowchart of FIG. This will be described with reference to FIG. The audio device adjustment device 5 includes an operation unit 5d for performing a key operation or the like by the user, a display unit 5c for displaying the content operated by the operation unit 5d, a memory 5e for storing a result of operation by the operation unit 5d, and the like. A light emitting unit 5b for transmitting the content operated by the operation unit 5d to the light receiving unit 4 of the preamplifier 1 by infrared rays or the like, and a microcomputer 5a for managing these
It is roughly constituted by.

First, the operation unit 5d of the acoustic device adjusting device 5
To change the system settings to Yes, and first set the equalizer curve and crossover network settings that are considered to be a comfortable sound space,
And the like are stored in the memory 5e. Then, the equalizer curve and the set value information of the crossover network stored in the memory 5e are transmitted to the light receiving unit 4 of the preamplifier 1 by infrared rays from the light emitting unit 5b of the audio device adjusting device 5.
Send to

The setting values of the equalizer curve and the crossover network are repeatedly changed while actually playing music and the like in the acoustic space. Finally, the equalizer curve and the setting value of the crossover network that make the acoustic space comfortable are stored in the memory 5e. And the microcomputer 3 in the preamplifier 1 also stores the equalizer curve and the crossover network for a comfortable acoustic space.

Here, when setting values of the equalizer curve and the crossover network that make the acoustic space comfortable are set in the same acoustic space, the setting value information is already stored in the memory 5e in the acoustic device adjusting device 5. Is the system setting change No and there is a memory load request? Is set to Yes, and the light emitting unit 5b of the acoustic device adjustment device 5
When the setting value information of the equalizer curve and the crossover network is transmitted to the light receiving unit 4 of the preamplifier 1, the equalizer curve and the setting value information of the crossover network for making the acoustic space comfortable are copied to the microcomputer 3 in the preamplifier 1. be able to. Therefore, there is no need for a specialized system engineer to input the setting values one by one, and the setting operation can be completed easily and in a short time.

In the case described above, the adjusting device 5 for the acoustic device is used.
Transmitting the equalizer curve and the setting value information of the crossover network stored in the memory 5e to the light receiving unit 4 of the preamplifier 1 by using the infrared light from the light emitting unit 5b. It goes without saying that the transmission to the adjusting device 5 may be performed by a cable.

[0014]

According to the adjusting device for an audio device of the present invention,
There is no need for a specialized system engineer to input the equalizer curve and crossover network setting values one by one.
By copying the setting information of the equalizer curve and the crossover network stored in the audio device adjustment device, the process can be completed easily and in a short time. This is D
Even when the preamplifier having the SP is replaced due to a failure or the like, copying can be similarly performed. In particular, the present invention is effective for car audio in which a large number of identical acoustic spaces are supplied, and a DSP is desired to provide a comfortable acoustic space.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a schematic block diagram of an audio device having a DSP in a preamplifier, and (b) is a schematic block diagram of an adjustment device for the audio device.

FIG. 2 shows an embodiment of the present invention and is a schematic flowchart of a process performed by a microcomputer included in the adjustment device for an audio device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Preamplifier, 2 ... Display part, 3 ... Microcomputer, 4 ... Light receiving part, 5 ... Adjustment device for audio equipment, 5a ... Microcomputer, 5b ... Light emitting part, 5c ... Display part, 5d
.. Operating unit, 5e memory, 6 digital reproducer, 7 analog reproducer, 8 analog-digital converter, 9 switch, 10 DSP, 11 digital filter, 12
Digital-to-analog converter, 13 ... electronic volume, 14
... power amplifier, 15 ... speaker

Claims (2)

[Claims] 1. An audio device adjustment device for transmitting acoustic characteristic adjustment information to a preamplifier having a digital signal processor, wherein the operation unit digitally adjusts the acoustic characteristics and inputs the adjustment information. An adjustment device for an audio device, comprising: a memory that stores an adjustment signal; and a transmission unit that transmits the adjustment information. 2. The adjusting device for an acoustic device according to claim 1, wherein said transmission means is optical transmission using infrared rays.