JP2987264B2 - Optical disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk reproducing apparatus suitable for singing and practicing a language.

[0002]

2. Description of the Related Art There is a case where a part of a singer is repeatedly practiced by a karaoke apparatus or the like. A few seconds of the desired part was played for a predetermined time with a repeat key or the like and sung.

[0003]

However, in this case, one's own voice is matched with the accompaniment sound from the disc,
The effect of improvement was low because it could not be evaluated objectively like other people would listen. Also, in language practice, etc., one track was used as a teaching material using a tape recorder, etc., and the other track was recorded as a practice track, and the objective evaluation was made. Not only has the drawback of reducing by half, but also has rewinding and the like, and also has difficulty in operability. The present invention provides a device suitable for repetitive vocal practice of these parts and which can be heard immediately.

[0004]

An optical disk reproducing apparatus according to the present invention comprises: an optical disk reproducing section for reproducing an optical disk; a reproducing section setting section for setting a reproducing section of the optical disk; a microphone for inputting sound; A for converting an input audio signal into digital audio signal data
A D conversion unit, a data compression unit that compresses the digital audio signal data converted by the A / D conversion unit, a storage unit that stores the digital audio signal data that has been compressed by the data compression unit, A data decompression unit for decompressing the output digital audio signal data, a DA conversion unit for converting the digital audio signal data decompressed by the data decompression unit into an analog audio signal, and audio output from the optical disc playback unit An output control unit that selects and outputs a signal and an analog audio signal output from the DA conversion unit; and a control unit that controls input sound from the microphone to be stored in the storage unit during reproduction of the reproduction section. It is provided with. An optical disk reproducing apparatus according to the present invention includes: an optical disk reproducing unit that reproduces an optical disk; a reproduction section setting unit that sets a reproduction section of the optical disk; a microphone to which sound is input; an audio signal input from the microphone; An audio signal synthesizing unit for synthesizing audio signals output from the unit, an AD converting unit for converting the audio signal synthesized by the audio signal synthesizing unit into digital audio signal data, and a digital audio converted by the AD converting unit A data compression unit for compressing the signal data, a storage unit for storing the digital audio signal data compressed by the data compression unit, and a data expansion unit for expanding the digital audio signal data output from the storage unit A DA converter for converting the digital audio signal data expanded by the data expander into an analog audio signal; An output control unit that selects and outputs an audio signal output from a disk playback unit and an analog audio signal output from the DA conversion unit; and an input audio from the microphone and the optical disk playback unit during playback of the playback section. And a control unit for controlling so that the audio signal from the controller is synthesized by the audio signal synthesizing unit and stored in the storage unit.

[0005]

As a result, it is possible to easily compare the reproduction of a predetermined portion of the disc with the portion recorded by the user, and also to reproduce the two portions alternately or simultaneously, thereby increasing the learning effect. Operability is also improved.

[0006]

FIG. 1 is a block diagram showing one embodiment of the present invention.
The details of the key 2 are shown in FIG. In the optical disc reproducing unit 1,
An optical disk such as a compact disk or a laser disk can be reproduced and designated reproduction can be performed from a predetermined place. These are controlled by a control CPU 3 composed of a microcomputer by operating an input key 2.

Here, in the means for repeatedly reproducing a part of the reproduction program by key operation, the key 21 is depressed at the first part to be repeated during reproduction (A), and the key 21 is also depressed at the last part (B). Pressing only the so-called AB repeat key 21 or the ending part to set the playback section by pressing the key repeatedly presses the repeat key 22 among the keys for setting a part of a certain time, for example, 5 seconds. While you listen to the part you want to practice, make your own voice.

Here, the CPU naturally recognizes the section setting time and the like. By operating the REC key 23 of the keys 2, the data is digitized by the AD converter 6 via the microphone 4, the data is compressed by the compression unit 7, and the data is stored in the memory 9 such as a DRAM of a semiconductor memory.

Here, the data compression is performed to save the data. In the case of DCD conversion and compression, such as a mini disk system, music data can be compressed by a fraction of a degree, and even if it is performed in stereo, DRAM of about 4M bits
If you use, you can store about 10 seconds of audio, which is enough for practice.

Here, the memory is controlled by a memory controller 8 which performs an address generation and an address generation section write / read operation. These technologies are implemented as LSIs. Here, the memory address is determined corresponding to the same time as that of the previous section by the voice from the microphone in accordance with a command from the CPU 3, and the memory operation is performed to store the same time as the previous time such as AB repeat. Can be

When the data storage is completed, the data is read out from the memory, the data is expanded by the decompressor 10 in the reverse of the data compression of the compressor 7, and the DA converter 11 converts the digital data into an analog signal. After conversion, the voice (b) uttered by the user himself is output. Here, after the reproduction from the memory 9 is completed, the voice (b) for reproducing the reference (model) from the optical disk and the own voice (b) are alternately switched by the output control circuit 12 and output, or The reproduction voice (a) and the own voice (b) are mixed (synthesized) by the synthesizing unit (MIX) 5 and output, and the like, and the reproduced sample voice (a) and the own voice (b) Can be compared. At this time, A
-Repeat playback between B can be performed and comparative listening can be repeated. For example, when practicing a language, a teacher's voice is reproduced from an optical disk, and his / her own voice is stored (stored) in a memory and recorded. You can play and compare the teacher's voice from the optical disc and your voice from the memory. For example, when practicing karaoke, a karaoke accompaniment is reproduced from an optical disc, and the user sings in accordance with the karaoke accompaniment and synthesizes the karaoke accompaniment with his / her own song (M
IX) and record it in memory. You can play back the karaoke accompaniment and MIX of your voice from the memory and the karaoke accompaniment from the optical disc and compare them.
It is possible to switch to karaoke accompaniment while listening to the MIXed voice and sing.

These mode settings are made by key input.
It can be realized by controlling with PU3. FIG. 3 is a flowchart showing the storing operation in the memory 9, that is, the REC operation. When the AB repeat key 21 is pressed at the start point A where the disc is to be repeated in the playback state by the play key 25 or the like, and then pressed at the end point B, the AB section is taken in and the apparatus returns to the point A and stands by. If you press repeat key 22 here, AB
You can play back the time, reconfirm and remember the contents. Here, when the REC key 23 is pressed, the reproduction of the optical disk starts again between AB and the voice from the microphone 4 is put into the memory 9.

If the mode key 24 is set to the mode A, SW1 is turned on to mix the reproduced signal and the sound of the microphone into the memory 9, and the output control circuit 12 outputs the reproduced sound (a) to the output. That is, sing while playing an orchestra such as karaoke, and add your own voice to the memory 9
Put in. If the mode is not A, there is no sound and only your voice is memorized, which is good for language practice.

Here, the control of REC (recording) is A
Since the mode is the same as the mode, when the predetermined A and B reproductions end, the REC also ends. When playing, repeat key 2
By pressing 2 or the like, the data is alternately reproduced from the optical disk unit and the memory unit, so that comparison of language practice and the like can be easily performed. In addition, they can be simultaneously reproduced in synchronization and compared. As described above, the user's voice can be recorded and reproduced by the easy operation of the REC key, and the user can easily compare and listen to the sample music and the teacher's voice reproduced from the optical disk. Also used for karaoke equipment and language practice equipment,
Any disc can be used without using a special practice tape or the like, which is useful. As described above, it is possible to realize a device that can be quickly accessed, has good operability, and enables repeated recording and reproduction using the optical disk and the memory. When used in the mini-disc system, the compression section, decompression section, memory (RAM), etc. used for recording / reproduction of the mini-disc can also be used as the compression section, decompression section, memory, etc. of the optical disc reproducing apparatus of the present invention.

[0015]

According to the optical disk reproducing apparatus of the present invention,
The reproduced sound from the optical disk and the reproduced sound from the memory by the user's own recording can be reproduced alternately or simultaneously.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a diagram showing an example of key input.

FIG. 3 is a flowchart.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 optical disc reproducing unit 2 key 3 CPU 4 microphone 5 MIX 6 AD converter 7 compression unit 8 memory control 9 memory 10 expander 11 DA converter 12 output control circuit 21 AB repeat key 22 repeat key 23 REC key 24 mode key 25 Play Key

Claims (2)

(57) [Claims] 1. An optical disk reproducing section for reproducing an optical disk, a reproduction section setting section for setting a reproduction section of the optical disk, a microphone to which sound is input, and converting an audio signal input from the microphone into digital audio signal data. An analog-to-digital converter, a data compressor for compressing digital audio signal data converted by the analog-to-digital converter, a storage unit for storing digital audio signal data compressed by the data compressor, and a storage unit. A data decompression unit for decompressing digital audio signal data output from the digital demultiplexer, a DA conversion unit for converting the digital audio signal data decompressed by the data decompression unit into an analog audio signal, and an output from the optical disc reproducing unit. An output control unit that selects and outputs an audio signal and an analog audio signal output from the DA conversion unit; Optical disk reproducing apparatus, characterized in that the input voice from the microphone equipped with a control unit for controlling to store in the storage unit in Namachu. 2. An optical disk reproducing section for reproducing an optical disk, a reproduction section setting section for setting a reproduction section of the optical disk, a microphone to which sound is input, an audio signal input from the microphone, and an output from the optical disk reproducing section. An audio signal synthesizing unit for synthesizing the audio signal to be converted, an AD conversion unit for converting the audio signal synthesized by the audio signal synthesizing unit into digital audio signal data, and a digital audio signal data converted by the AD conversion unit. A data compression unit that performs compression processing, a storage unit that stores digital audio signal data that has been compressed by the data compression unit, a data expansion unit that expands digital audio signal data output from the storage unit,
A DA converter for converting the digital audio signal data decompressed by the data decompressor into an analog audio signal, an audio signal output from the optical disc reproducing unit and an analog audio signal output from the DA converter; An output control unit for outputting the audio signal from the microphone and an audio signal from the optical disk reproducing unit during the reproduction of the reproduction section by the audio signal synthesizing unit and storing the synthesized audio signal in the storage unit. An optical disc reproducing apparatus, comprising: