JPH01241062A - Sound signal recording/reproducing device - Google Patents

Abstract

PURPOSE:To vary the sound characteristic of the case of recording/reproducing a sound signal automatically on each recording medium and each section of the sound signal and to improve the operability of a sound signal recording/ reproducing device by setting the characteristic information of the sound signal on each recording medium or on each section of the sound signal recorded on the recording medium. CONSTITUTION:A compact disk is loaded on a reproduced device 1 and the processing parameter corresponding to the necessary sound signal processing is input from an operation part 5. The subcode data in the compact disk, i.e., manufacturing number, track number, index number and the set code corresponding to the processing parameter for executing the necessary sound signal processing are thus corresponded with and stored in a set code memory 13. At the time when the compact disk that the subcode data and set code are corresponding with is loaded on the reproducing device 1 and the recording contents are reproduced like this, the sound signal preset and subjected to a sound signal processing is led to a line 12 and made acoustical.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to audio signals corresponding to multiple pieces of music, such as compact discs and digital audio tapes, as well as information on music numbers and movements within the same piece of music. Audio signals can be recorded/reproduced on recording media on which so-called subcodes such as index numbers and playback times are recorded, as well as recording media on which identification information such as serial numbers are recorded as subcodes. The present invention relates to an audio signal recording/reproducing device.

[Prior Art] In a playback device that plays back an audio signal recorded on a recording medium such as a compact disc, it is called a graphic equalizer that can adjust the gain for each of a plurality of predetermined frequency bands of the audio signal. Conventionally, devices equipped with sound quality adjustment means and a signal processing device for so-called surround playback have been used.

Adjustment of the gain for each of the various frequency bands of the acoustic signal is performed by operating a plurality of slide volumes provided in the operation section of the playback device corresponding to the plurality of frequency bands, and also by adjusting the setting values of the plurality of slide volumes. (hereinafter referred to as "equalizer pattern data") corresponding to a plurality of sets of data (hereinafter referred to as "equalizer pattern data") is stored in a storage means, and the equalizer pattern data is selectively retrieved to create the retrieved equalizer pattern. This is also done by electronically adjusting the gain for each frequency band in response to the data. Various signal processing such as surround playback is also performed in the same way.

The data related to the processing of the acoustic signal, such as the plurality of equalizer pattern data stored in the storage means, is selected in accordance with the acoustic characteristics of the room in which the reproduction device is installed, as well as the type of acoustic signal to be reproduced, such as music. It may be selected even if it corresponds to the genre, etc. Conventionally, the selection of data corresponding to such acoustic signal processing has been performed by the operator, and therefore, for example, each time a compact disc is loaded into a playback device, and each time the number of songs to be played changes, The operator had to operate the operation section of the playback device to call up data regarding processing of the audio signal.

Furthermore, when recording audio signals on a digital audio tape, the operator was required to perform operations similar to those described above, even when recording audio signals that have been subjected to signal processing.

Problems to be Solved by the Invention It is an object of the present invention to be able to set acoustic signal characteristic information for each category of acoustic signals recorded on a recording medium, and thus to improve the acoustic characteristics when the acoustic signals are recorded/reproduced. However, it is an object of the present invention to provide an audio signal recording/playback device in which the audio signal is automatically changed for each section of the audio signal.

Further, it is an object of the present invention to be able to set acoustic signal characteristic information for each recording medium and for each classification of acoustic signals recorded on the recording medium. An object of the present invention is to provide an audio signal recording/reproducing device in which the acoustic characteristics of an audio signal recorded/reproduced for each signal section are automatically changed.

Means for Solving the Problems The present invention is an apparatus for recording/reproducing acoustic signals on a recording medium on which acoustic signals are recorded in sections, the apparatus comprising: characteristic information for inputting characteristic information of the acoustic signals; An audio device comprising: an input means; and a storage means for storing characteristic information inputted for each category of the recording medium, and the recording/reproducing operation is performed based on the contents stored in the storage means. It is a signal recording/reproducing device.

The present invention also provides an apparatus for recording/reproducing acoustic signals on a recording medium in which acoustic signals are recorded in sections and on which identification information for identifying the recording medium is recorded. a characteristic information input means for inputting characteristic information of the acoustic signal; and a storage means for storing identification information and characteristic information input for each classification of the recording medium, and the recording/reproducing operation is performed by:
This is an audio signal recording/reproducing device characterized in that recording/reproducing is performed based on the contents stored in a storage means.

Operation In the present invention, characteristic information of the acoustic signal is inputted from the characteristic information input means and stored in the storage means for each section of the recording medium. The recording/reproducing operation of the acoustic signal is performed based on the stored contents of the storage means, and therefore, the acoustic characteristics are automatically changed for each acoustic signal recorded separately on the recording medium, and recording/reproduction is performed.

Further, in the present invention, characteristic information is input from the characteristic information input means for each acoustic signal to be recorded in a recording medium, and identification information to be recorded in the recording medium and characteristics input for each recording medium category are inputted from the characteristic information input means. The information is stored in the storage means in association with the other information. The recording/reproducing operation of the acoustic signal is performed based on the storage contents of this storage means, and therefore the acoustic characteristics of the acoustic signal recorded in sections on the recording medium are automatically adjusted for each recording medium and for each section of the recording medium. Recording/reproduction is performed in such a way that the information is changed.

Embodiment For example, in a compact disc, a track number indicating the number of a plurality of songs recorded on the compact disc, an index number indicating the number of a division such as a movement within each song, a playback time of the song to be played, and A so-called sub-code representing the serial number etc. is recorded along with the audio signal. By reading this subcode, a playback device that plays back audio signals recorded on a compact disc realizes a random access function that allows, for example, a high-speed search for specific recorded information.

In this embodiment, information such as the track number, index number, and serial number is extracted from the above-mentioned subcode, and this information is associated with parameters for recalling data related to audio signal processing and stored in the storage means. When the audio signal is reproduced, the audio signal is reproduced based on the stored contents. In this way, the acoustic signals recorded on each compact disc are reproduced with the acoustic characteristics automatically changed for each song, or for each movement even if the same song is included.

FIG. 1 is a block diagram showing the electrical configuration of a playback device 1 which is an embodiment of the present invention. The subcode read from the compact disc, which is a recording medium, is sent to a CD control circuit 2 that controls an optical pickup (not shown) that optically reads the recorded content on the compact disc.
It is also given to the control circuit 3. An operation section 5 and a display section 6, which are characteristic information input means, are connected to the control circuit 3 via an input/output control circuit 4.

The operation unit 5 is realized by a slide volume row 7 including a plurality of slide volume for changing the gain of the acoustic signal for each of a plurality of frequency bands, a matrix switch, etc., and a function key group 8 for specifying various functions. It is composed of: In addition, the display section 6 is, for example, an LED.
(light-emitting diode) display devices, etc.
Equalizer patterns set by the track number, index number, slide volume column 7, etc. are displayed.

Also connected to the control circuit 3 is a processing parameter memory 9 that stores parameters for changing frequency characteristics, and parameters related to the level of reverberant sound and the level of early reflected sound for realizing so-called surround reproduction. . The control circuit 3 reads out the processing parameters from the processing parameter memory 9 on a one-to-one basis for each processing parameter.
This is done by providing a setting code corresponding to the processing parameter memory 9 to the processing parameter memory 9, and the processing parameters thus read are provided to the acoustic signal processing circuit 10. An acoustic signal is input to the acoustic signal processing circuit 10 from a line 11, and the input acoustic signal is subjected to signal processing based on processing parameters given from a processing parameter memory 9. The acoustic signal subjected to signal processing in this manner is led out to line 12.

Also connected to the control circuit 3 is a setting code memory 13 which is a storage means. In the setting code memory 13, subcodes and setting codes to be recorded on the compact disc are stored in association with each other through processing to be described later.

The 20th is a flowchart for explaining the operation of the above-mentioned playback device 1. When a compact disc is loaded into the playback device 1 in step n1, subcode data is read into the CD control circuit 2 and the control circuit 3 in step n2. Based on the read subcode data, the track number or index number is displayed on the display section 6 in step n3.

In step rr4, the control circuit 3 determines whether the subcode data read from the loaded compact disc is
It is determined whether the setting code is stored in the setting code memory 13. If the judgment in step rr4 is negative, proceed to step n9; if the judgment is affirmative, step n9
If the process proceeds to step n5, that is, if the processing parameters related to various acoustic signal processing corresponding to the currently read subcode data have already been associated, the process proceeds to step n5, where it is determined whether or not to reset the processing parameters. Ru. If the processing parameters are not to be reset, the process advances to step n6, and the display section 6 displays processing parameters and the like corresponding to the subcode data read from the compact disc.

Next, in step n7, the control circuit 3 provides the processing parameter memory 9 with a setting code corresponding to the subcode data read from the setting code memory 13', so that the setting code is transferred from the processing parameter memory 9 to the setting code memory 13. Processing parameters corresponding to the read setting code are provided to the acoustic signal processing circuit 10.

As a result, in step n8, the audio signal processing circuit 10 performs preset audio signal processing corresponding to the subcode data read from the compact disc.

If it is determined in step n4 that no setting code is associated with the subcode data read from the compact disc, the process proceeds to step n9, step n9
In the step, it is determined whether or not to set the processing parameters, and if the settings are not made, the acoustic signal processing circuit 10
No signal processing is performed, that is, a normal audio signal reproduction operation is performed. In step n9, when setting processing parameters, the process advances to step r110.

In step nlO, the operator operates the slide volume row 7 and function key group 8 of the operation section 5 while visually viewing the display section 6 to correspond to each track number, index number, serial number, etc. of the compact disc. In the Otori 11, the setting code corresponding to the processing parameter inputted in this way is associated with the aforementioned subcode data in the control circuit 3, and the setting code is input. It is stored in the memory 13. This post-processing returns to step n5.

In this way, the operator loads a compact disc into the playback device 1 and inputs processing parameters corresponding to desired audio signal processing from the operation unit 5.

As a result, the subcode data on the compact disc, that is, the serial number, track number, and index number, and the setting code corresponding to the processing parameters for performing the desired audio signal processing are stored in the setting code memory 13 in association with each other. Ru. This makes it possible to preset a plurality of songs stored on each of a plurality of compact discs and audio signal processing for each section within each song.

When a compact disc in which subcode data and setting codes are associated as described above is loaded into the playback device 1 and its recorded contents are played back, the settings are already set without any operation on the operation unit 5. The acoustic signal that has been subjected to the acoustic signal processing described above is led out to line 12 and is converted into sound. Therefore, for each compact disc,
In addition, when performing different audio signal processing for each song, there is no need to perform setting operations corresponding to each audio signal processing when playing back the recorded contents of a compact disc.
The operability of the playback device 1 is greatly improved.

In the above embodiment, the setting code memory 13 stores setting codes corresponding to a plurality of compact discs, but the contents stored in the setting code memory 13 are cleared each time a compact disc is loaded. Thus, each time the operator loads a compact disc into the playback device 1, the processing parameters corresponding to the subcode data of the loaded compact disc may be inputted from the operation unit 5. In other words, the setting code The memory 13 may store subcode data and setting code data of one compact disc in association with each other.

Furthermore, in the above embodiments, the case where a compact disc is used as a recording medium has been described, but the present invention can be widely applied to a recording medium on which subcodes are recorded, such as a digital audio tape. This can also be applied to the recording operation.

Effects of the Invention As described above, according to the present invention, it is possible to set acoustic signal characteristic information for each recording medium and for each category of acoustic signals recorded on the recording medium, so that the acoustic signal can be recorded/recorded.
Since the acoustic characteristics of the reproduced thirst are automatically changed for each recording medium and for each section of the acoustic signal, the operability of the acoustic signal recording/reproducing device is greatly improved. Become so.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of a playback device 1 according to an embodiment of the present invention, and FIG. 2 is a flowchart for explaining its operation. DESCRIPTION OF SYMBOLS 1... Playback device, 3... Control circuit, 5... Operating unit, 6... Display unit, 9... Processing parameter memory, 1
0...Acoustic signal processing circuit, 13...Setting code memory Fig. 1

Claims (2)

[Claims] (1) A device for recording/reproducing an acoustic signal on a recording medium on which the acoustic signal is recorded in sections, comprising a characteristic information input means for inputting characteristic information of the acoustic signal; 1. An audio signal recording/reproducing apparatus, comprising: a storage means for storing characteristic information inputted for each category; and a recording/reproducing operation is performed based on the contents stored in the storage means. (2) A device that records/reproduces an acoustic signal on a recording medium in which acoustic signals are recorded in sections and on which identification information for identifying the recording medium is recorded, A recording/reproducing operation includes: a characteristic information input means for inputting characteristic information of the acoustic signal; and a storage means for storing identification information and characteristic information input for each category of the recording medium.
An audio signal recording/reproducing device characterized in that the audio signal recording/reproducing device performs recording/reproducing based on the contents stored in a storage means.