JPH07296511A - Sound volume and quality automatic setting device - Google Patents

Abstract

PURPOSE:To provide a sound volume and quality automatic setting device capable of automatically obtaining specific sound volume and quality each time a CD, etc., are changed. CONSTITUTION:Subcode information is read from a disk 2, this subcode information and subcode information prestored in RAMs 27 and 28 are compared by CPU 29, and when these coincide, specific sound volume and quality information stored relating to the subcode information is read and a sound is reproduced by using these sound volume and quality. Thus, it is possible to automatically set specific sound volume and quality for each disk 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume / sound quality setting device for a digital audio reproducing device such as a CD player system.

[0002]

2. Description of the Related Art In a conventional CD player system or the like, each time a disc (CD; compact disc) is reproduced, the user adjusts the volume and sound quality to his liking. That is,
The user generally changed the volume and sound quality to his or her preference depending on the song. Further, when the same song is reproduced again, it is common to set the volume and sound quality to be approximately the same as the volume and sound quality set last time.

[0003]

However, it is complicated to reset the volume and sound quality to a desired one each time a CD or the like is exchanged. Also, once set to the desired volume and sound quality, it was forgotten, and reproducibility was poor. Therefore, it is an object of the present invention to provide an automatic volume / sound quality setting device that automatically obtains a specific volume / sound quality each time a CD or the like is replaced.

[0004]

In order to solve the above problems, the present invention provides a subcode information other than a music signal recorded on an audio signal record carrier according to claim 1, and setting for each of the audio signal record carriers. It is characterized in that the specified specific volume / sound quality setting information is input to the control section, and the control section writes the sub-code information and the volume / sound quality setting information in a memory in association with each other.

According to a second aspect of the present invention, the sub-code information other than the music signal recorded on the audio signal record carrier is input to the control unit, and the control unit sets the sub-code information to the sub-code information written in the memory. If they are compared with each other and match, the volume / sound quality setting information written in association with the subcode information is read out from the memory, and the sound is reproduced at the volume / sound quality.

[0006]

According to the present invention, the volume / sound quality setting information specified for each audio signal record carrier can be written in the memory. Therefore, it is possible to set a specific volume and sound quality for each audio signal record carrier.

According to the second aspect of the invention, the volume / sound quality setting information specified for each sound signal record carrier can be read from the memory and automatically reproduced at the volume / sound quality.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a volume / sound quality automatic setting apparatus according to the present invention. In the present embodiment, an audio reproducing device of a CD player will be described as an example, but the present invention is not limited to this, and for example, an audio reproducing unit of a video disc player (VD) or a digital audio tape recorder (DAT). It can also be used for the sound reproducing device.

The volume / sound quality automatic setting device 1 is composed of a disk fixing member 4 for fixing an audio signal recording carrier (disk) 2 to a disk drive unit 3, and the audio signal recording carrier 2.
A spindle motor 5 for rotating the audio signal, an optical pickup 6 for reading an audio signal from the audio signal record carrier 2, an RF amplifier 7 for amplifying the read audio signal, and an amplified audio signal for inputting this audio signal. A digital signal processing unit 8 which processes the music signal and the sub-code information separately, and the music signal output from the digital signal processing unit 8 is digital-analog (D / A) converted via a digital filter 9. A DA converter 10 for separately outputting a left (L) channel analog music signal and a right (R) channel analog music signal, and an audio for amplifying and controlling the L and R channel analog music signals output from the DA converter 10. And a circuit 11. Further, although not shown, the L and R channel analog music signals are input to the L and R speakers and reproduced as voice. Further, the frontmost (2k × 8) bits of the music signal are always written in the RAM 12 from the digital signal processing unit 8 and are used as a measure for bit jump due to vibration or the like.

Next, the automatic setting device 1 includes a sled feed motor 20 for tracking, a servo signal processing section 21 for controlling the positions of the sled feed motor 20 and the optical pickup 6, and a display for displaying a reproduction state. (Display unit) 22, digital volume setting unit 23 and operation unit 24, digital sound quality setting unit 25 and operation unit 2
6, a sound volume storage RAM 27 for storing a sound volume setting value, a sound quality storage RAM 28 for storing a sound quality setting value, and a control unit (C
PU system control) 29. And
The control unit 29 includes the servo signal processing circuit 21, the display 22, the digital volume setting means 23, the digital sound quality setting means 25, and the volume storage RAM 2.
7, the sound quality storage RAM 28, and the digital signal processing unit 8 are controlled.

By the way, on the audio signal record carrier 2, for example, a disc (CD), subcode information (TOC; Table Of Contents) is written at regular time intervals in addition to the music signal. One symbol of these sub-code information is composed of 8 bits and is named P, Q, R, S, T, U, V, W, respectively. In addition, P is a cue signal of the music, Q is the number of channels of the music signal, control signals such as presence or absence of emphasis, address signal, track number, index number, total time of the music, elapsed time of the music itself, etc. It is like this. The 6-bit data of R to W can handle various other data.

Therefore, it becomes possible to specify the disc by these subcode information. That is, if the subcode information of the disc and the specific volume / sound quality setting information are stored in the memory, the disc can be reproduced at the specific volume / sound quality by reading them from the memory.

Next, the operation of the automatic volume / sound quality setting device 1 will be described. First, the invention of claim 1 will be described. First, as a prerequisite, the disk 2 is mounted on the disk drive unit 3. The audio signal read by the optical pickup 6 is input to the digital signal processing unit 8 via the RF amplifier 7. The digital signal processing unit 8 divides the music signal and the sub-code information, the music signal is processed as described above, and the sub-code information is processed as described below.

The subcode information output from the digital signal processing unit 8 is input to the control unit 29. On the other hand, when the volume is set to a specific volume by the volume setting means 23 via the operation section 24 including a remote control or a manual knob on the reproduction apparatus main body side, the volume setting information is stored in the control section 2.
9 is input. Similarly, when a specific sound quality is set by the sound quality setting means 25 via the operation unit 26 including a remote control or a manual knob on the reproduction apparatus main body side, this sound quality setting information is input to the control unit 29. . Next, the control section 29 associates the subcode information with the volume setting information and writes them in the volume storage RAM 27. Similarly,
The control unit 29 associates the sub-code information with the sound quality setting information and writes them in the sound quality storage RAM 28.

Therefore, the desired volume / sound quality setting information for each disc is specified and stored in the RAM 27, 28, and this volume / sound quality information can be utilized at the time of reproduction. That is, even if the user does not remember a specific volume / sound quality setting value for each disc, it can be automatically reproduced at a desired volume / sound quality. In addition, it is not limited to the case where the volume and sound quality are automatically set,
It goes without saying that it is possible to automatically set only one of the volume and the sound quality.

In this embodiment, only the time of the first program (P.TIME) is used as the subcode information.
This P. Discs can be discriminated sufficiently practically only with TIME. By thus reducing the number of bits of the subcode information, the capacity of the RAM can be made as small as possible, and the device can be downsized and the cost can be reduced.

Next, the invention of claim 2 will be described.
The audio signal read by the optical pickup 6 is the R signal.
It is input to the digital signal processing unit 8 via the F amplifier 7. Then, the digital signal processing unit 8 divides the audio signal into a music signal and sub-code information, and the music signal is reproduced through the digital filter 9, the DA converter 10, the audio circuit 11 and the like as described above.

On the other hand, the subcode information is stored in the control unit 2
9 is input. Then, the control unit 29 compares the sub-code information with the sub-code information written in the volume storage RAM 27 in advance, and if they match, the volume setting information written in association with the sub-code information is written. It is read from the volume storage RAM 27. When the volume setting information is input to the digital signal processing section 8, the digital signal processing section 8 digitally processes the music signal to a predetermined volume. Therefore, the desired volume is automatically set and reproduced.

Similarly, the control unit 29 compares the subcode information with the subcode information written in the sound quality storage RAM 28, and if they match, sets the sound quality set corresponding to the subcode information. Information is read from the sound quality storage RAM 28. Then, when this sound quality setting information is input to the digital signal processing unit 8, the digital signal processing unit 8 digitally processes the music signal to have a predetermined sound quality. Therefore, the desired sound quality is automatically set and reproduced.

In the digital signal processing unit 8, the volume
Volume setting means 2 rather than digitally processing the sound quality
3 and the sound quality setting means 25, the control section 29 controls the audio adjusting volume and the sound quality adjusting volume (not shown) in the audio circuit 11 in accordance with the volume and sound quality information. Good.

That is, the disc identification code (that is, subcode information) and the specific volume / sound quality setting information set for this disc are stored in the RAM in association with each other, and based on this volume / sound quality setting information. Since the volume and sound quality are set automatically, the user can enjoy music at the desired volume and sound quality without having to remember the desired volume and sound quality for the disc.

[0022]

According to the invention of claim 1, the volume / sound quality setting information specified for each audio signal record carrier can be written in the memory. Therefore, it is possible to set a specific volume and sound quality for each audio signal record carrier.

According to the invention of claim 2, the volume / sound quality setting information specified for each sound signal record carrier can be read from the memory and automatically reproduced at the volume / sound quality.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an automatic volume / sound quality setting device according to the present invention.

[Explanation of symbols]

1 ... Automatic volume / sound quality setting device, 2 ... Audio signal recording carrier (disk; CD), 8 ... Digital signal processing unit, 23
... Digital volume setting means, 24, 26 ... Operating section, 25
... Digital sound quality setting means, 27 ... Volume storage RAM, 2
8 ... Sound quality storage RAM, 29 ... Control unit (CPU system control).

Claims (2)

[Claims] 1. A sub-code information other than a music signal recorded on an audio signal record carrier and specific volume / sound quality setting information set for each audio signal record carrier are input to a control unit and the control is performed. The section writes the subcode information and the volume / sound quality setting information in a memory in association with each other, and sets the volume / sound quality automatically. 2. Sub-code information other than a music signal recorded on an audio signal record carrier is input to a control unit, and the control unit compares the sub-code information with sub-code information written in the memory, When they match, the volume / sound quality setting information written in association with the subcode information is read out from the memory, and the sound is reproduced at that volume / sound quality.