JP3545043B2 - Sound reproduction device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a sound reproducing apparatus that enables so-called karaoke practice by enabling an original music recorded on the same recording medium or a different recording medium and an accompaniment of the original music to be alternately reproduced.
[0002]
[Prior art]
In a conventional karaoke sound reproducing apparatus, only accompaniment music is reproduced from a CD (compact disk) or an LD (laser disk).
In recent years, a single CD or other similar disc in which an original music composed of an accompaniment and a singing voice and an accompaniment of the original music are both recorded has become popular.
[0003]
[Problems to be solved by the invention]
In the case of a karaoke sound device that plays only the accompaniment, the original song including the singing voice is not played, so if the song has not been practiced sufficiently, match the singing voice to the accompaniment intonation. Can not.
Also, when playing a single CD or the like in which the original music and accompaniment music are both recorded, the accompaniment music is played after all the original music has been heard. I can't sing along with the accompaniment. Also, when the single CD is reproduced by a sound reproducing device mounted on a car, the lyrics card cannot be seen during driving, so that it is not possible to sing with accurate lyrics according to the accompaniment music.
[0004]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and allows an original song and an accompaniment to be alternately listened to, for example, to practice a song without looking at a lyrics card. It is intended to provide a sound reproducing device.
[0005]
[Means for Solving the Problems]
The sound reproducing apparatus according to the present invention comprises a first recording unit in which music data of an original music including an accompaniment and a singing voice are recorded together with subcode data, and music data of only an accompaniment music of the original music together with subcode data. The recorded second recording unit is the same as a recording area in which TOC data or index data relating to music data recorded in the first recording unit and the second recording unit is recorded.Provided on a recording medium,
The data recorded in the first recording unit and the second recording unit and the TOC data or index data arereadReading means;
An input unit for instructing a switching position between an original song recorded in the first recording unit and an accompaniment recorded in the second recording unit;
While storing the TOC data or index data read by the reading means, the input unitInstructionsTime code for the information on the switching between the original music and the accompanimentAs dataStorage means for storing;
In the storage meansSaid memorizedBased on the TOC data or index data, the playback start positions of the original music recorded in the first recording unit and the accompaniment music recorded in the second recording unit are searched,The time code data stored in the storage unit and the subcode data read from the first recording unit and the second recording unitOn the basis of,The same song portion of the original song and the accompaniment is played at the same timeTo beControl means for controlling the reading means so as to alternately switch and reproduce,
Is provided.
[0008]
In the above description, the recording medium is a compact disk (CD), a single CD, a reproduction-only mini disk (MD), or the like. And a second recording unit in which is recorded is used. Alternatively, two disks of the same type are used, or two disks of different types are used in combination such as a compact disk and a mini disk, and a first recording unit in which the original music is recorded is provided on one disk. The other disk may be provided with a second recording section in which only the accompaniment music is recorded. Alternatively, both the first recording section and the second recording section are provided on an IC card or a built-in memory, or one of the first and second recording sections is provided on any one of the above types of discs, and the other is provided on an IC card. Or in a built-in memory.
[0009]
Further, in the third means, when writing is performed on any one of the recording units by the writing unit, both of the first and second recording units or one of the recording units is used for both writing and reading. It is provided on a mini disk, IC card, or built-in memory.
[0010]
The reading means and the writing means are optical heads for reproduction only or for both recording and reproduction when the recording medium to be used is a disk, and are used when the recording medium to be used is an IC memory or another memory. Such as a controller.
[0011]
[Action]
In the first means, a device in which a first recording unit and a second recording unit are provided on the same recording medium or different recording media is used. When the recording medium is a disk, TOC (Table of Contents) data read from the disk is referred to. When the recording medium is an IC card, a built-in memory, or the like, index data stored therein is referred to. Then, the reproducing operation is performed. In this reproducing operation, first, a part of the original tune (a song including an accompaniment song and a singing voice) recorded in the first recording unit is reproduced, and then the original tune among the accompaniment songs recorded in the second recording unit is reproduced. The same part as the reproduction part is reproduced. Next, the remaining part of the original music recorded in the first recording unit is reproduced, and then the accompaniment music of the same music part recorded in the second recording unit is reproduced, and thereafter, this is repeated.
[0012]
At this time, the music is switched, and the original music and the accompaniment music may be switched at regular time intervals (for example, every 5 to 10 seconds). However, in this case, the music is switched at a location where the division is poor, so that the switching location where the division of the music is good is recorded in advance in the TOC data or index data, and the TOC data or index data is read prior to reproduction. The original music and the accompaniment music may be switched by referring to the switching position of the TOC data or the index data in a memory.
[0013]
In the second means, the information on the switching point of the music is stored in the memory or the like in the control means without including the information on the switching point of the music in the TOC data or the index data. For example, first, the first recording unit is reproduced to listen to all of the original songs, and when the listener is listening to the original songs, any one of the input units provided at the place where the user wishes to separate by himself Press the operation button. When the recording medium is, for example, a compact disk (CD), the subcode data is read together with the reproduced audio data and stored in a memory or a register. The subcode data includes data such as a time code indicating the time of the music being reproduced or the total reproduction time, a music number, or data indicating an absolute position of data reproduction. As described above, when the operation button is pressed while the listener is playing back the original music, the control unit sets the reproduction position of the original music when the operation button is pressed based on the subcode data as time. It is recognized as information or reproduced data length, and the time or data position is stored in a memory or the like in the main control unit.
[0014]
All the original songs are reproduced, and all the switching points are input by the operation buttons. For example, when the reproduction button is pressed next time, the original songs and the accompaniment songs are alternately reproduced. At this time, based on the time information and data length information stored in the memory or the like, the control unit first reproduces the original music from the first recording unit, and after reaching the first switching position, the second recording unit , And the accompaniment music is reproduced for the same time length or data length as the original music piece. Further, the original music is reproduced from the first recording unit, and when the time or data length of the next switching point is reached, the accompaniment music is reproduced for the same time or data length from the second recording unit. And this will be repeated.
[0015]
In the third means, as a recording medium, a writable and readable mini-disc, another writable and readable IC card, a built-in memory, and the like are used. First, when recording the original music on the first recording unit using a mini-disc recorder or the like, at the same time as the recording, the listener arbitrarily inputs the switching position of the original music using the operation button of the recorder. On the recording medium, information on the switching location is recorded simultaneously with the recording of the original music. Alternatively, it is also possible to newly input the information of the switching location into the first recording unit after recording the original music in the first recording unit.
[0016]
Next, when a reproducing operation is performed by the same device as that for recording or by a different player using the recording medium, the original music is reproduced from the first recording unit, and the information of the first switching position is reproduced from the recording unit. It is read and then switched to reading from the second recording section, and the accompaniment is reproduced from the second recording section for the same time or data length. And this is repeated.
As described above, the original song and the accompaniment are played back part by part, so that after listening to the original song partially, the accompaniment of that portion can be heard immediately, and the karaoke You will be able to practice. Especially when driving a car, there is no need to look at the lyrics card, so that driving safety can be maintained.
[0017]
As in the second means and the third means, the switching position between the original music and the accompaniment music can be arbitrarily input by the operation buttons, so that the switching according to the characteristics of the music or the listener's preference of the song can be performed. It is possible to set the location.
When switching between the original music and the accompaniment music, a sound such as "Pee" may be emitted.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a circuit block diagram showing a sound reproducing apparatus according to a first embodiment of the present invention, FIG. 2 is an explanatory diagram showing an input operation of information on a switching point, and FIG. FIG. 4 is a flowchart showing a reproducing operation.
FIG. 1 shows an on-vehicle sound reproducing device. The disk D as a recording medium loaded in the sound reproducing device is a so-called single CD. The disc D is provided with a TOC area on the lead-in side, and a data area on an outer peripheral portion thereof. In the data area, for example, two original songs (recordings of accompaniment songs and singing voices) are recorded, and thereafter, accompaniment songs (karaoke songs) of the same songs as the two original songs are recorded. In this case, the portion where the two original songs are recorded is the first recording unit, and the portion where the two accompaniments are recorded is the second recording unit.
[0019]
The data recorded in the data area is composed of audio data in which each of the music pieces is encoded and subcode data provided for each frame. The subcode data includes a song number (song identification data), a time code indicating the playback time from the beginning of each song, and the total playback time of all songs. Further, TOC data is recorded in the TOC area. The TOC data is data indicating a song number of each song, a start time (start position) and an end time (end position) of each song, and the like.
When the disc D is inserted into the sound reproducing apparatus, the disc D is pulled in by a carry-in roller or the like and clamped on the turntable 11. The turntable 11 is driven to rotate by a spindle motor M. The turntable 11 and the spindle motor M constitute a disk rotation drive mechanism.
[0020]
An optical head H is opposed to the disk D as reading means. Laser light emitted from the semiconductor laser in the optical head H is focused on the recording surface of the disk D by the objective lens L. The return light modulated by the pits on the recording surface of the disk is detected by a light receiving element in the optical head H. The RF output of the detection output (reproduction output or read output) of the optical head H is converted to an RF amplifier 1 To be amplified and waveform-shaped and sent to the decoder 2. The decoder 2 obtains acoustic data, TOC data, subcode data, parity, and the like from the RF signal whose waveform has been shaped. Error correction is performed on the audio data by parity, and the audio data is demodulated. The sound data is converted into an analog signal by a D / A converter (digital-analog converter) 3 to be an audio output (sound output).
The main control unit (system controller) 4 includes a ROM 5b for storing a control program, a CPU 5a for executing a processing operation based on the control program, a memory (storage unit: RAM) 5c for storing various data, a register, and the like. It is composed of The TOC data and the subcode data obtained by the decoder 2 are given to the main control unit 4 via a path (a). The TOC data is held in a memory (RAM) 5c. The subcode data is also stored in the memory 5c or in a register in the main control unit 4. The input unit 6 has various operation buttons and instructs the main control unit 4 to perform a reproduction operation and the like.
[0021]
The drive control unit (servo controller) 8 is controlled by the main control unit 4. The tracking error signal and the focus error signal obtained by the four-divided light receiving unit in the optical head H are provided to the drive control unit 8 via the path (b). The tracking correction operation and the focus correction operation are performed in the optical head H by the tracking servo signal and the focus servo signal provided from the drive control unit 8.
The optical head H is sent by the optical head driving means 9 in the radial direction of the disk D. The optical head driving means 9 has, for example, a motor driver, a motor, and a screw shaft driven by the motor. The optical head H is screwed to the screw shaft, and the radius of the disk D is changed with the rotation of the screw shaft. Driven in the direction. The spindle motor M is driven at a constant speed by a motor driving means (motor driver) 10. The optical head driving unit 9 and the motor driving unit 10 are controlled by the drive control unit 8.
[0022]
Next, the operation of the sound reproducing device having the above configuration will be described.
In the sound reproducing apparatus shown in FIG. 1, in the data area of the same disk D, the original music recorded in the first recording unit and the accompaniment music of the same music as the original music recorded in the second recording unit Are alternately reproduced one by one.
There are various methods for setting the timing of switching between the original music and the accompaniment music (switching location), but the most basic method is to switch between the original music and the accompaniment music at fixed time intervals. In this case, the operation of switching between the original music and the accompaniment music every 10 seconds is set as a karaoke practice mode by a program stored in the ROM 5b in the main control unit 4. Further, the time for switching between the original music and the accompaniment music may be arbitrarily set by inputting the operation button of the input unit 6.
[0023]
In the reproducing operation, first, when the disk D is loaded on the turntable 11, the disk D is driven to rotate by the spindle motor M, and the optical head H is moved to the lead-in position of the disk D by the optical head driving means 9. The TOC data at the lead-in position is read by the optical head H. This TOC data is sent from the decoder 2 to the main controller 4 and stored in a memory (RAM) 5c.
When a setting input of “Karaoke practice mode” is input by the operation button of the input unit 6 and a selection instruction of a desired original music (for example, the second music) is input by the operation button (see ST1 in FIG. 4), the main control unit. In step 4, first, the position of the song number (for example, the second song) of the selected song is calculated with reference to the TOC data stored in the memory 5c, and a command for a search operation is issued to the drive control unit 8. Based on this, the optical head driving means 9 moves the optical head H to the start position of the desired original music, and the start position of the music is searched. Then, the original music is reproduced, and the original music flows from the speaker via the decoder 2 and the D / A converter 3 (ST2). During this time, the subcode data read out together with the audio data from the disk is sequentially read into the memory 5c or the register in the main control section 4, so that the reproduction time from the beginning of the music can always be recognized.
[0024]
Referring to the time code in the sub-code data, if it is determined that the preset time (for example, 10 seconds) has been reached as described above (ST3), the main control unit 4 reproduces the data into the drive control unit 8. A command for switching is issued. At this time, the TOC data is referred to, and the start position of the accompaniment music of the same music as the original music among the accompaniment music recorded in the second recording unit of the disc is searched. The optical head H is moved to the start position of the accompaniment by the optical head driving means 9 controlled by the drive control section 8, and the accompaniment is reproduced (ST4).
Also at this time, the subcode data is demodulated by the decoder 2 together with the acoustic data of the accompaniment music, and sent to the RAM 5c or the register of the main control unit 4. The CPU 5a refers to the time code in the subcode data, and monitors whether or not the accompaniment music has been reproduced only in the same portion (at the same time) as the portion in which the original music was reproduced (ST5). When the accompaniment is played for the same time, the playback is switched to the original music. At this time, the sub-code data stored in the RAM 5c at the end of the previous reproduction of the original music is referred to, the optical head H searches for the continuation of the previously reproduced original music, and the original music is reproduced again from that position. It is reproduced (ST2). By repeating this, the original music and the accompaniment music are repeatedly reproduced for the same time (for example, every 10 seconds). When it is determined that all of the accompaniment music pieces have been reproduced (ST6), the reproduction is terminated (ST7).
[0025]
As described above, since the same music part of the original music and the accompaniment music are alternately reproduced, the listener listens to the original music, learns the rhythm and lyrics, and immediately thereafter plays the accompaniment music of the same music piece. You can sing along.
However, if the switching interval between the original music and the accompaniment music is determined to be a fixed time, for example, 10 seconds, by the program or the like stored in the ROM 5b as described above, the switching between the original music and the accompaniment music is not performed. It is not realistic because it is in the middle of words or in the inflection of the song.
[0026]
Therefore, by recording the information of the switching location according to the characteristics of the original music recorded on the disc D in the TOC data, more realistic karaoke practice becomes possible. Immediately after the disk D is loaded on the turntable 11 as described above, the TOC data is read out by the optical head H and stored in the RAM 5c of the main control unit 4. Therefore, if data indicating the switching position is added to the TOC data when recording data on the disk D, the data of the switching position in the TOC data when the disk D is loaded is also stored in the memory (RAM). ) 5c. The data indicating the switching location is obtained by using the switching location between the original music and the accompaniment as time code data or information on the data length.
[0027]
When the "karaoke practice mode" is set by the operation button of the input unit 6 and the play button is pressed, the start position of the original music is searched first, as shown in FIG. Is read out by the optical head H and becomes an audio output. At this time, the CPU compares the data relating to the switching location in the TOC data stored in the RAM 5c with the time code of the subcode data that is sequentially read out. Switching to playback. When the playback length (playback time) of the accompaniment reaches the same length as the original song (ST5), the playback is switched to the original song. Then, the switching is repeated until the accompaniment music of the music ends.
As described above, when the TOC data includes the data of the switching location, the original music and the accompaniment music can be switched according to the characteristics of the music.
[0028]
Even if the TOC data does not include the data of the switching location, the switching location between the original music and the accompaniment music can be arbitrarily set by the input operation of the listener.
As the operation, first, one of the original songs recorded in the first recording unit of the disc D is designated by the operation button of the input unit 6, and the original song is played through one song. The listener presses a predetermined operation button of the input unit 6 while listening to the reproduced original music. For example, as shown in FIG. 2A, while listening to the original music 12a, the position (time) (I, II, III,. ) Is input with the operation button. This operation input is read by the CPU of the main control unit 4, and is stored in the memory (RAM) 5c together with the time code data of the subcode data. Alternatively, based on the time code data of the sub-code data sequentially read at the time of reproducing the original music and the operation input of the input unit 6, the CPU 5a causes the respective parts (A, B, C,...) The start position (start time) and time length (data length) or the end position of A, B, C,... (End time, switching time) are calculated as time length or data length, and the result is stored as RAM 5c as switching information data. Is stored in
[0029]
After the reproduction of the original music is completed, the "karaoke practice mode" is set by the operation button of the input unit 6, and when the reproduction button is further pressed, the start position of the original music 12a is searched, and the operation of the original music 12a is performed. Is reproduced up to the position of I which was first pressed (part A). The main control unit 4 compares the read time code of the subcode data of the original music with the switching information data, and when it is determined that the reproduction of the portion A is completed, the optical head H switches the second recording. Then, the start position of the accompaniment 12b same as the original music 12a is searched, and the accompaniment 12b is reproduced. When it is determined from the time code of the subcode data read during the reproduction of the accompaniment that the portion a having the same length as the portion A of the original music has been reproduced, the original music 12a is again moved from the position I to the position B from the position I. Will be played for the length of. Next, part b of the accompaniment music piece 12b (the same music part as B) is reproduced.
As a result, as shown in FIG. 3, the same music portion of the original music and the accompaniment music is switched and reproduced in the order of AaBBcC.
[0030]
Incidentally, the switching information data inputted from the input unit 6 at the time of I, II, III,... And stored in the RAM 5c is kept in the RAM 5c until the "karaoke practice mode" is canceled.
In this example, since the listener can himself input the part he or she wants to switch between the original music and the accompaniment music while actually listening to the music, the music can be switched according to his / her preference. In addition, since it is not necessary to include special data in the TOC data or the like, a commercially available single CD including an accompaniment can be used as it is. The structure of the sound reproducing apparatus may be the same as that of a conventional CD player, and the program stored in the ROM 5b only needs to include the control operation flow relating to the karaoke practice mode. Can be added to
[0031]
FIG. 5 shows a sound reproducing apparatus that uses a mini-disc (MD) as a recording medium disk D and that can perform recording and reproduction.
In an audio reproducing apparatus using a mini-disc, analog audio information to be recorded is digitized by an A / D converter 21 and compressed and encoded by a compression encoder 22 as data mainly containing information in the audible range. Data compressed and encoded by the compression encoder 22 is stored in a memory (buffer memory) 24, and the stored information is sent to an encoder 25 under the control of a memory controller 23 in synchronization with recording timing on a mini-disc. The recording data is formatted by the encoder 25 and output to the head drive unit 26. In the head drive unit 26, a modulation current modulated based on the formatted data is formed, and the modulation current is sent to the magnetic head 27. At the same time, the disk D is heated by the laser beam from the optical head 28, and recording is performed on the disk by magnetic field modulation.
[0032]
During reproduction, data read from the disk D and subjected to waveform shaping by the waveform shaping unit 32 is reformatted by the decoder 33 and stored in the memory 24 by the memory controller 23 in a predetermined amount. The stored data is read out by a predetermined amount under the control of the memory controller 23 and output to the decompression decoder 34. The memory 24 functions as a shock proof. In the decompression decoder 34, the compressed data read from the memory 24 is decompressed and restored as digital information, and this digital information is converted into an analog signal by the D / A converter 35 and becomes an audio output.
The optical head 28 and the magnetic head 27 constitute a writing unit, and the optical head 28 constitutes a reading unit. As described above, the optical head 28 heats the recording surface of the disk D with the laser light at the time of recording, and detects laser return light from the disk D at the time of reproduction. The movement of the optical head 28 in the radial direction of the disk D is controlled by the optical head driving means 29, and the irradiation intensity of the laser beam is controlled.
[0033]
Reference numeral 30 denotes a motor drive unit including a spindle motor. The motor drive unit 30 is controlled by a drive control unit 31 so that the spot of the laser beam irradiated by the objective lens L and the linear direction of the recording surface of the disk D The rotational force is output so that the relative speed is always constant. The optical head driving unit 29 and the motor driving unit 30 are controlled by the drive control unit 31.
The main control unit 4 includes a CPU 5a, a ROM 5b, a memory (RAM) 5c, a register, and the like, as shown in FIG. The input unit 6 has various operation buttons arranged thereon.
In the minidisc (MD), data relating to the music number and recording position of the recorded music is recorded in the TOC area. In an audio reproducing apparatus using one mini-disc, a plurality of original music pieces and a plurality of accompaniment music pieces of the same music piece as the original music piece are recorded in a data area of the same disc. The portion of the data area where the original tune is recorded is the first recording unit in the present invention, and the portion where the accompaniment is recorded is the second recording unit.
[0034]
In the sound reproducing apparatus using the mini-disc shown in FIG. 5, switching when repeating the original music and the accompaniment music can be performed in the same manner as described in the embodiment of FIG.
For example, according to a program stored in the ROM 5b, the original music of the first recording unit and the accompaniment music of the second recording unit may be repeatedly reproduced at the same time interval, for example, 10 seconds, or may be specially reproduced. Using a simple recording program, the TOC data in the TOC area may include the data of the switching position between the original music and the accompaniment music. Alternatively, as shown in FIG. 2 and FIG. 3, while first listening to the original song through one song, the user operates the input unit 6 to input a switching location such as I, II, or III. Data may be stored in the RAM 5c or the like.
[0035]
However, when a recordable sound reproducing device as shown in FIG. 5 is used, when recording the original music on the mini-disc, data on the switching location can be written on the disc together. For example, the user presses the operation button of the input unit 6 at the switching point with the accompaniment music while listening to the original music being recorded. When the operation button is pressed, a code indicating a predetermined switching position is sent from the memory (RAM) 5c or the like to the encoder 25, and a code indicating the switching position is added to the subcode data recorded together with the audio data. And records it in the data area of the disk D.
[0036]
At the time of reproduction, the main control section 4 reads a code indicating a switching portion from the subcode data sent from the decoder, and at this time, the reproduction is switched from the original music to the accompaniment music. As a result, when recording the original music, it becomes possible to add data relating to the switching position with the accompaniment music to the position desired by the listener.
Also, in a sound reproducing apparatus that compresses and records data and decompresses and demodulates data like a mini-disc, it is possible to reduce the silence time when switching between the original music and the accompaniment music. In the sound reproducing apparatus using a CD shown in FIG. 1, after the reproduction of a part of the original music on the disc D is completed, the reproduction start position of the accompaniment C is searched, and then the reproduction is started. Since the position is searched and the reproduction is resumed, a long silence period indicated by reference numeral 13 in FIG. 3 occurs when switching between the original music and the accompaniment music.
[0037]
However, in the audio reproducing apparatus using a mini disk or the like shown in FIG. 5, the compressed data read by the optical head 28 at the time of the reproducing operation and demodulated by the decoder is temporarily stored in the memory 24, and thereafter, the expanded decoder 34 The data is decompressed to produce an audio output. Therefore, the time during which data is actually read from the disk by the optical head 28 is shorter than the time of music, and the optical head 28 normally skips and scans the same part of the recording track of the disk by this time difference. It has become. Therefore, for example, immediately after the optical head 28 finishes reading the data of a certain portion of the original music, the optical head 28 searches for the start position of the accompaniment by utilizing the time when the data is expanded by the expansion decoder 34. You can start. By performing such control, the silent time when switching between the original music and the accompaniment music can be shortened.
In the embodiment shown in FIGS. 1 and 5, it is also possible to make a dial tone or a chime sound flow from the speaker when switching between the original music and the accompaniment music during the reproduction operation. Furthermore, for example, as shown by B and b in FIG. 3, the same part of the original music and the accompaniment music can be played back repeatedly, so that the karaoke practice of the same part can be repeated, and when the repeat operation is canceled by the operation button. Alternatively, the process may be shifted to the next part C of the original music.
[0038]
In the embodiment described with reference to FIGS. 1 and 5, the first recording unit for recording the original music and the second recording unit for recording the accompaniment music are provided on one disc such as a CD or MD. Although it is provided, for example, two CDs, two MDs, or a sound reproducing device capable of reproducing CDs and MDs simultaneously, or a CD or MD and a cassette tape can be reproduced simultaneously. In the case of the sound reproducing apparatus described above, the original music piece may be recorded on one recording medium and the accompaniment music piece may be recorded on the other recording medium, and the two recording media may be alternately reproduced.
Also, an IC card capable of compressing and recording acoustic data or a large-capacity built-in memory can be used as a recording medium. In this case, the original music or the accompaniment music is recorded on the IC card or the memory by reproducing the CD or the MD, and at the same time, the information on the switching position of the music is also recorded on the IC card or the memory. The original music and the accompaniment may be read alternately from a CD or MD and an IC card or memory. When using an IC card or memory, the reading means and the writing means are memory controllers.
[0039]
【The invention's effect】
As described above, in the present invention, since the original song and the accompaniment are alternately played back one by one, the original song can be partially listened to, and immediately after that, the accompaniment of the same portion can be heard and sung. This is the best karaoke practice. Also, in the case of a vehicle, it is possible to practice karaoke without looking at the lyrics card while driving.
[0040]
It is also possible to set the switching position between the original music and the accompaniment music according to the characteristics and taste of the music.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a circuit configuration of a sound reproducing apparatus according to a first embodiment of the present invention;
FIG. 2 is an explanatory diagram for explaining an input instruction of a switching portion between an original music and an accompaniment music,
FIG. 3 is an explanatory diagram for explaining an alternate reproduction operation of an original music and an accompaniment music;
FIG. 4 is a flowchart for explaining the operation of the sound reproducing apparatus according to the first embodiment of the present invention;
FIG. 5 is a block diagram showing a circuit configuration of a sound reproducing apparatus according to a second embodiment of the present invention;
[Explanation of symbols]
1 RF amplifier
2 Decoder
3 Digital / analog converter
4 control unit
5a CPU
5b ROM
5c RAM
6 Input section
8 Drive control unit
9 Optical head driving means
10 Motor drive means
12a Original song
12b Accompaniment
A-C Playback part of original song
a to c Accompaniment playback part
D disk
H optical head
M spindle motor

Claims (1)

A first recording unit in which music data of an original song including an accompaniment and a singing voice is recorded together with subcode data, and a second recording unit in which music data of only an accompaniment of the original song is recorded together with subcode data And a recording area in which TOC data or index data related to music data recorded in the first recording unit and the second recording unit is provided on the same recording medium;
Reading means for reading data recorded in the first recording unit and the second recording unit and the TOC data or index data;
An input unit for instructing a switching position between an original song recorded in the first recording unit and an accompaniment song recorded in the second recording unit;
Storage means for storing the TOC data or index data read by the reading means, and storing, as time code data, information relating to the switching position between the original music and the accompaniment specified by the input unit;
Based on the TOC data or index data stored in the storage means, the reproduction start positions of the original music recorded in the first recording unit and the accompaniment music recorded in the second recording unit are searched. Rutotomoni, based on the sub-code data read from the time code data stored in the storage means and the first recording unit and second recording unit, the same song portion of the accompanying music and the original song, together Control means for controlling the reading means so as to alternately switch and reproduce the same time;
A sound reproducing device characterized by being provided.

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