JPH0555199U - Karaoke equipment - Google Patents

Abstract

(57) [Summary] [Purpose] For example, in a karaoke device using a CD,
Audio information such as the timing of singing was recorded in the subcode. [Structure] The reproduction unit 1 reproduces the CD maycode and subcode information, and the Maycode information is demodulated by an accompaniment signal demodulator 3 as an accompaniment signal. The subcode information is demodulated by the subcode information demodulation unit 4 as image data and audio data, the image data is converted into an image signal by the image processing decoder unit 8, and lyrics and the like are displayed by the display monitor 9. The voice data is converted into a voice signal by the voice synthesis circuit 10 and reproduced by the speaker 7 via the voice signal superimposing unit 12.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a karaoke apparatus using a recording medium represented by, for example, a compact disc (CD) in which an accompaniment signal is recorded as a main code and a control signal is recorded as a sub code.

[0002]

[Prior Art]

 Since the CD has a large capacity, many songs can be recorded. Also, since high-speed random access is easy, you can select a desired song from many songs and play it back quickly. Because of such characteristics, so-called karaoke devices using CDs are becoming popular recently.

FIG. 11 shows the configuration of a conventional karaoke device using a CD. That is, the reproducing section 1 is loaded with a CD (not shown), and has a drive mechanism section for rotating the CD, an optical pickup section, a control LSI for controlling the drive mechanism section and the pickup section, and a pickup. It is provided with a signal processing LSI (none of which is shown) for processing the electric signal obtained by the section.

A key input unit 2 is connected to the reproduction unit 1, and by operating the key input unit 2, a program such as an accompaniment signal recorded on a CD is selected. Main code information and sub-code information reproduced from the CD are extracted from the reproduction section 1, main code information is supplied to the accompaniment signal demodulation section 3, and sub-code information is supplied to the sub-code information demodulation section 4. To be done.

The accompaniment signal demodulation section 3 demodulates the main code information into an audible signal, that is, an accompaniment signal. The accompaniment signal demodulation section 3 includes a microphone and a microphone for amplifying an electric signal from the microphone. A microphone unit 5 including an amplifier is connected. The accompaniment signal demodulation unit 3 further includes a mixing function for superimposing the vocal signal of the singer obtained by the microphone unit 5 on the accompaniment signal.

The accompaniment signal provided by the accompaniment signal demodulation unit 3 and the vocal signal superimposed on the accompaniment signal are amplified by a low frequency amplifier 6 and applied to an electroacoustic converter 7 such as a speaker or a headphone to output a voice signal. To be played as.

The subcode information supplied to the subcode signal demodulation unit 4 is demodulated into an image data signal by the subcode signal demodulation unit 4 and supplied to the image processing decoder unit 8. The image processing decoder unit 8 demodulates the image data signal into an image signal, and the demodulated image signal is supplied to a display monitor 9 such as a television monitor to reproduce a video such as lyrics.

In the above configuration, when a karaoke CD is loaded in the reproducing section 1 and a desired song is selected by the key input section 2, the main code information reproduced from the CD is transferred to the accompaniment signal demodulating section 3. It is supplied and demodulated into an accompaniment signal in the audible frequency band. Then, the vocal signal by the singer supplied from the microphone unit 5 is superimposed on the accompaniment signal and supplied to the low frequency amplifier 6, and reproduced by the electroacoustic transducer 7.

On the other hand, the subcode information signal supplied from the reproduction unit 1 is demodulated as an image data signal by the subcode signal demodulation unit 4, and the image data signal demodulated by the subcode signal demodulation unit 4 is further subjected to image processing. An image signal is demodulated by the decoder unit 8 for reproduction and reproduced by the monitor 9 as an image such as lyrics. Therefore, the user can enjoy karaoke while watching the video such as the lyrics on the monitor 9.

[0010]

[Problems to be solved by the device]

 By the way, in the karaoke apparatus shown in FIG. 11 described above, the singer cannot know in advance the timing of singing or the pitch of the beginning of singing. , I'll be following the song.

The present invention was made in order to overcome such a conventional problem, and reproduces the timing of starting singing, introduction of a song, etc. by means such as voice synthesis in the intro portion of the beginning of the song. However, it is an object to provide a karaoke device that can inform the singer of the information.

[0012]

[Means for Solving the Problems]

 The karaoke apparatus of the present invention made to solve the above-mentioned problems is a reproducing unit for reproducing main code information and subcode information from a recording medium in which main code information and subcode information are multiplexed and recorded. 1 and the accompaniment signal demodulation unit 3 which demodulates the accompaniment signal from the main code information reproduced by the reproduction unit 1, and the image data signal and the audio data signal from the subcode information reproduced by the reproduction unit 1. Subcode signal demodulation section 4, image processing decoder section 8 for demodulating an image signal by inputting the image data signal demodulated by subcode signal demodulation section 4, and audio demodulated by subcode signal demodulation section 4. A voice synthesis LSI 10 as a voice signal generation unit that generates a voice signal by inputting a data signal, and a voice signal obtained by the voice signal generation unit A mix amplifier 12 as an audio signal superimposing unit for superimposing the accompaniment signal obtained by the accompaniment signal demodulating unit 3 is provided, and the image signal obtained by the image processing decoder unit 8 is applied to the display monitor 9. At the same time, the synthesized voice signal obtained by the voice signal overlapping section is applied to the speaker 7 as an electroacoustic transducer.

[0013]

[Action]

 In the karaoke apparatus having the above-described structure, an image such as lyrics obtained by the image processing decoder unit 8 is displayed on the display monitor 9, and an audio data signal demodulated by the subcode signal demodulation unit 4 is an audio signal, for example. It is generated as a voice signal by the synthesis LSI 10 and is superimposed on the accompaniment signal obtained by the accompaniment signal demodulation unit 3.

Therefore, together with the accompaniment signal, the timing of the beginning of singing, the introduction of the song, etc. are output by an audio signal. Therefore, the singer who uses this can know exactly when to start singing.

[0015]

【Example】

 Before explaining the karaoke apparatus of the present invention, the format of a compact disc (CD) which is one of the recording media used in the present invention will be described.

FIG. 3 shows the format of data recorded on a CD. One frame consisting of 588 channel bits after EFM modulation is roughly classified into a 24-bit sync pattern as a frame synchronization signal, and one symbol (= (14 channel bits) sub-code data, 12-symbol main code data as audio data, 4 symbol parity for error detection and correction, 12-symbol main code data as audio data, and 4 symbol parity. Is composed. In addition, 3-bit data called a margin bit is inserted between each symbol, and the DC component is suppressed by the margin bit.

One subcoding frame is formed by 98 frames of subcodes. This is shown in FIG.

That is, the subcode includes 98 symbols of subcode data obtained by repeating 1 frame of data shown in FIG. 3 for 98 frames. The first 2 symbols are the subcode sync pattern and the remaining 96 symbols. The bits of the symbol are configured as P to W data. Of the P to W data, P and Q data are called control bits, and R to W data are called user bits. This P data is used as a code indicating between songs or in the middle of a song. Further, the Q data is used as a code representing the address (time code) of the information recorded on the disc, the details of which are shown in FIG.

The Q data is configured in units of 96 bits. These bits are, in order, a flag (4 bits) indicating on / off information of emphasis of audio data, an address (4 bits) at which the current "0001" data is mainly used, and a track number (which indicates a song number). 01 to 99) (8 bits), index code indicating a chapter in a song (01 to 99) (8 bits), elapsed time in a song is minutes (PM IN) (8 bits), seconds (PSEC) (8 bits), relative time data indicated in units of subcode frame (PF RAME) (8 bits), zero code (8 bits) in which data of only "0000 000" is currently defined, and from the start point of the disc Elapsed time in minutes (AMIN) (8 bits), seconds (ASEC) (8 bits), subcode frame (AFRAME) (8 bits) Absolute time data indicating Re respectively, and consist of the error detection code (16 bits).

The CD has a lead-in area, a program area (intermediate between the lead-in area and the lead-out area), and a lead-out area (outermost area) according to the recording position on the disc. Although the information indicated by the Q data is different in each area of the disc, the subcode information in the lead-in area is called TO C (Table Of Contents), and the sub-code information is read before the disc is reproduced. It is possible to know the number of tracks and total playing time.

That is, in the lead-in area, the track number of the Q data is set to “00”, and the PMIN when the code called POINT set in place of the index code is “A0” is the disc. , The first track number of "A1" indicates the last track number of the disc, and the track number of "A2" indicates PMIN, PSEC, and PFRAME indicating the absolute time when the lead-out area starts. Each is defined.

Here, the reason why the first track number is represented when the POINT of the TOC is “A0” is that the first song does not necessarily have to be “track number = 1” in the standard. As a result, the number of songs recorded on the disc can be calculated from PMIN obtained when POINT = A0 and A1 and the total disc total can be calculated from PMIN, PSEC, and PFRAME obtained from POINT = A2. You can know the playing time.

When POINT is 01 to 99, the start time (absolute time) of the track number represented by the number is indicated by PMIN, PSEC, and PFRAME, so that the track specified by the user can be accessed. It will be possible.

Next, user data R to W data will be described with reference to FIG.

User bits are composed of 6 bits R to W, and 24 symbols obtained by dividing 96 symbols into four equal parts are treated as the minimum unit (pack) of data. Incidentally, 4 packs (96 symbols) are called a packet.

The details of one pack are shown in FIG. The first symbol (hereinafter referred to as symbol 0) represents a mode (3 bits) and an item (3 bits). Details of this mode and items will be described later.

The following symbol 1 is an instruction indicating the type of instruction, and symbol 2 and symbol 3 are parity Q (Q0, Q1) which is an error detection and correction code for symbols 0-3. Symbols 4 to 19 following the parity are data fields and are composed of graphics data and the like. The symbols 20 to 23 following the data field are used as parity P (P0, P1, P2, P3) which is an error detection and correction code for protecting the information (symbols 0 to 23) in the pack.

Next, the above modes and items will be described.

The currently defined combinations of modes and items are as follows. Mode 0 (000), Item 0 (000) ... ZERO mode Mode 1 (001), Item 0 (000) ... Line graphics mode Mode 1 (001), Item 1 (001) ... TV graphics mode Mode 7 (111) ), Item 0 (000) ... User mode Other undefined modes and combinations of items are reserved for future use.

As is clear from this definition, in mode 1, the data recorded in the data field is graphics data, and conversely, in mode 0, it is not compatible with graphics. Become.

FIG. 8 shows the structure of a pack in the TV graphics mode of mode 1 and item 1. The data field (Fig. 7) contains graphics data.

The TV graphics mode is a mode for displaying an image on the television screen, and the number of fonts that can be displayed is 48 in the horizontal (COLUMN) direction and vertical (ROW) as shown in FIG. 16 in the direction. However, one font is added to each of the upper, lower, left and right sides of the screen area, and the image data is composed of horizontal 50 (font) × vertical 18 (font). This outermost font is used as a pointer and is not displayed on screen. Here, the font is a screen configuration unit configured by arranging 6 pixels in the horizontal direction and 12 in the vertical direction.

FIG. 9 shows a configuration example of a data field (graphics data) in the TV graphics mode.

In the case of this embodiment, a vertical address (ROW) is defined by the symbol 6 and a horizontal address (COLUMN) is defined by the symbol 7, and the addresses are displayed in the symbols 8 to 19 respectively. Photon data is written. Of the font data, the data defined by the symbol 4 is used as the background color data, and the data defined by the symbol 5 is used as the foreground color data.

In the present invention, audio data and image information such as lyrics are recorded using the data field of user bits of R to W.

FIG. 2 shows the entire recording format according to the above description. 2A shows a case where a stereo instrumental signal, that is, an accompaniment signal of stereo is recorded as the main chord, and FIG. 2B shows the accompaniment to the first channel (Lch) as the main code. The signal is recorded, and the source used as so-called voice-compatible karaoke in which the audio signal of the song is recorded on the second channel (R ch) is shown. In both FIGS. 2A and 2B, image data signals such as lyrics and voice data signals indicating the timing of singing are recorded in the subcodes R to W.

FIG. 1 shows the configuration of an embodiment of the karaoke apparatus of the present invention. In FIG. 1, the same parts as those already described with reference to FIG. 11 indicate the same or corresponding parts, and therefore the description thereof will be omitted.

In FIG. 1, the subcode signal demodulation unit 4 connected to the reproduction unit 1 demodulates the subcode information obtained from the reproduction unit 1 into image data and audio data, respectively. That is, the image data and audio data are demodulated from the graphics data in the symbols 4 to 19 in the user code of the subcode.

The image data is supplied to the image processing decoder unit 8 and converted into an image signal representing lyrics, notes or the like and supplied to the display monitor 9 as in the case described with reference to FIG.

On the other hand, the voice data demodulated by the subcode signal demodulation unit 4 is supplied to the voice synthesis LSI 10 as a voice signal generation unit. A RAM 11 for storing voice data from the sub-code signal demodulation section 4 is connected to the voice synthesis LSI 10, and a read signal from the RAM 11 is supplied to the voice synthesis LSI 10. Then, the voice synthesis LSI 10 voice-synthesizes the voice data to generate a voice signal.

The voice signal generated by the voice synthesis LSI 10 is supplied to the mix amplifier 12 as a voice signal superimposing unit, and is superimposed on the accompaniment signal provided from the accompaniment signal demodulating unit 3. The output of the mix amplifier 12 is applied to a speaker or headphones as an electroacoustic transducer.

The operation of the karaoke apparatus of the present invention in the case of reproducing a CD having the format shown in FIG. 2A with the above configuration will be described. That is, in the format shown in FIG. 2A, a stereo accompaniment sound is recorded in the main chord information, and the accompaniment signal demodulator 3 superimposes the vocal signal of the singer obtained from the microphone unit 5 on the accompaniment sound. Are added to the audio signal superimposing unit 12.

On the other hand, the subcode information signal supplied from the reproducing unit 1 is demodulated by the subcode signal demodulating unit 4 as an image data signal and an audio data signal, and the image data signal demodulated by the subcode signal demodulating unit 4 is Further, it is demodulated into an image signal by the image processing decoder unit 8 and reproduced by the display monitor 9 as an image of lyrics or notes.

The voice data signal demodulated by the subcode signal demodulation unit 4 is generated as a voice signal by the voice signal generation unit 10 including a voice synthesis LSI, and is added to the voice signal superposition unit 12. The audio data signal is recorded at the beginning of each song (first song, second song, ...) As shown in FIG. 2, and therefore the audio signal generated by the audio signal generator 10 is Will be added to the audio signal superimposing unit 12 in the intro part of the above. The audio signal at this time is, for example, a music title introduction, a timing signal to start singing, a signal indicating a pitch, or a narration of the music. The audio signal superimposing unit 12 superimposes these audio signals on the accompaniment signal and outputs the audio signal. Etc. to the electroacoustic transducer 7.

Therefore, the user can enjoy karaoke while being prompted by a timing signal or the like to start singing reproduced from the speaker and watching images such as lyrics on the display monitor 9.

Next, the operation of the karaoke device of the present invention when reproducing a CD having a format as shown in FIG. 2B will be described. That is, in the format shown in FIG. 2B, as described above, the accompaniment signal is recorded in the first channel (Lch) as the main code information, and the voice signal of the song is recorded in the second channel (Rch). The subcode information is the same as that shown in FIG.

When the CD having the format shown in FIG. 2B is used, the karaoke is provided with the functions such as “voice changer function” or “assist vocal function” provided in the accompaniment signal demodulation unit 3. Playback can be performed.

That is, the accompaniment signal demodulation section 3 is additionally provided with a level detection circuit (not shown) for detecting the level of the vocal signal provided from the microphone unit 5. When the "voice changer function" is selected and the vocal signal level from the microphone unit 5 is higher than a predetermined level, the accompaniment signal of the first channel (Lch) of the main code information of the CD is The vocal signal from the microphone unit 5 is superimposed and reproduced. Also, for example, when the singer stops singing in the middle of a song and the level of the vocal signal provided by the microphone unit 5 falls below a predetermined level, the accompaniment of the first channel (Lch) of the main code information of the CD is accompanied. The audio signal of the professional singer recorded on the second channel (Rch) is superimposed on the signal and reproduced.

Although not shown in FIG. 1, two audio signal superimposing units 12 are provided, one of which is connected to a speaker and the other of which is connected to headphones. When "function" is selected, the vocal signal from the microphone unit 5 is superposed on the accompaniment signal of the first channel (Lch) of the main code information of the CD from the speaker and reproduced. In addition, the headphone reproduces the accompaniment signal of the first channel (L ch) by superimposing the voice signal of the professional singer recorded on the second channel (R ch). In this case, a singer who uses the karaoke device of the present invention, when wearing suspicious headphones, reproduces the voice signal of the singer who is a professional profession from the headphones, and thus the voice signal reproduced by the headphones (not reproduced by the speaker). ) Can be sung while imitating.

In the above, the karaoke apparatus of the present invention has been described according to an example in which a CD is used as a recording medium. However, the present invention is various recording such as CD-ROM, CD-I, DAT, etc. capable of recording graphics data. A medium can be used.

[0051]

[Effect of the device]

 As described above, the karaoke apparatus of the present invention uses, for example, a CD in which a main code and a subcode are multiplex recorded, as a source, demodulates an accompaniment signal from the main code and reproduces it with a speaker, etc. While playing back the image signal, it also works to play back the audio signal indicating the timing of starting singing.

Therefore, a singer using this can sing while watching a video such as lyrics displayed on the display monitor while being prompted by a timing signal or a signal indicating a pitch reproduced from a speaker or the like. Therefore, even if you are singing a song you are not singing for the first time or a song you are not familiar with, you can enjoy karaoke without losing the timing and pitch of the song.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a karaoke device of the present invention.

FIG. 2 is a conceptual diagram showing the overall format of a CD used in the embodiment of FIG.

FIG. 3 is a conceptual diagram showing the structure of one frame of a CD format.

FIG. 4 is a conceptual diagram showing the structure of a CD format subcode.

FIG. 5 is a conceptual diagram showing the structure of Q data of subcode.

FIG. 6 is a conceptual diagram showing a configuration of user bits of a subcode.

FIG. 7 is a conceptual diagram showing the structure of one pack in user bits.

FIG. 8 is a conceptual diagram showing the structure of one pack in the TV graphics mode.

FIG. 9 is a conceptual diagram showing details of a data field in the TV graphics mode.

FIG. 10 is a conceptual diagram illustrating the number of displayable fonts.

FIG. 11 is a block diagram showing an example of a conventional karaoke device using a CD.

[Explanation of symbols]

 1 playback unit 2 key input unit 3 accompaniment signal demodulation unit 4 subcode signal demodulation unit 5 microphone unit 7 electroacoustic converter 8 image processing decoder unit 9 display monitor 10 audio signal generation unit 12 audio signal superposition unit

Claims (1)

[Scope of utility model registration request] 1. A reproducing section for reproducing main code information and sub-code information from a recording medium in which main code information and sub-code information are multiplexed and recorded, and main code information reproduced by the reproducing section,
An accompaniment signal demodulation unit that demodulates the accompaniment signal, a subcode signal demodulation unit that demodulates an image data signal and an audio data signal from the subcode information reproduced by the reproduction unit, and a subcode signal demodulation unit An image processing decoder section for demodulating an image signal by inputting an image data signal, an audio signal generating section for generating an audio signal by inputting the audio data signal demodulated by the sub-code signal demodulating section, and the audio signal generating section. An audio signal superimposing unit that superimposes the obtained audio signal on the accompaniment signal obtained by the accompaniment signal demodulating unit, and applies the image signal obtained by the image processing decoder unit to a display monitor. A carao adapted to apply the synthesized voice signal obtained by the voice signal superposition unit to an electroacoustic transducer. Apparatus.