JPH10161680A - Musical sound generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display various advertisements and informations without obstructing the display of a word image or background image during the play of a playing musical composition in a musical sound generating device. SOLUTION: In order to judge whether a word image is displayed on a display device or not, it is judged whether the input level of a microphone, for example, is a prescribed value or lower (S3), and only when it is judged that no word image is displayed on the display device (S3:YES), the image by a second image output means is displayed on the display device (S7).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical sound generator such as a karaoke apparatus.

[0002]

2. Description of the Related Art Some conventional karaoke apparatuses are provided with a display device for displaying a background image corresponding to a genre of a musical piece in order to enliven the atmosphere of a user such as a singer or a person sitting there. . In such a karaoke apparatus, a lyric image synchronized with the performance, that is, a lyric telop is generally superimposed on a background image and displayed in order to facilitate the user to sing along with the performance of the music piece. It is.

[0003]

Recently, there has been a demand for using a karaoke apparatus not only as a medium for enjoying karaoke, but also as an information providing medium for providing various advertisements and information to users. It is getting stronger. In order to satisfy such demands, it is necessary to display such information on a display device. However, in the above-mentioned conventional karaoke device, lyrics telop is superimposed on a background video and displayed on a display screen of the display device. Therefore, it is difficult to display the above information in an overlapping manner. That is, if the lyrics telop and the information are superimposed on the background video, it may be difficult to distinguish the lyrics telop from the information or the background video may be almost hidden.

The present invention has been proposed in view of the above points, and displays various advertisements, information, and the like without disturbing the display of a lyric image and a background image as much as possible during the performance of a music piece. It is an object of the present invention to provide a musical sound generator capable of performing the above.

[0005]

In order to achieve the above object, a musical sound generating apparatus according to the first aspect of the present invention comprises a voice input means for converting a singing voice of a singer into a voice signal, and a background image of a musical piece. A first video output means for displaying a lyrics video on a display device, a second video output means for displaying on the display device a video different from the video output by the first video output means, A lyric image display determining means for determining whether or not a lyric image is displayed on the display device, and a lyric information display determining means for determining that the lyric image is not displayed on the display device during the performance of the music piece. Video switching means for displaying the video from the second video output means on the display device only when the video signal is present.

According to this musical sound generating apparatus, the video switching means performs the second processing only when the lyrics information display determining means determines that the lyrics video is not displayed on the display device during the performance of the music piece. The image output by the first image output means is displayed on a display device, so that the image output by the first image output means is used as a lyric image or a background image, and the image output by the second image output means is used as various advertisements or information images. Thereby, various advertisements and information can be displayed during the performance of the music piece without disturbing the display of the lyrics image and the background image as much as possible. Of course, the video by the second video output means may be a video such as a television broadcast.

[0007] That is, since the lyric images are all displayed, it is not difficult for the singer to sing.
Even for people other than the singer, various advertisements and information are displayed only during periods when the singer is not singing, such as during interludes, so that the atmosphere of the place is not broken .

According to a second aspect of the present invention, there is provided the musical tone generating apparatus according to the first aspect, wherein the lyrics image display determining means determines that the lyrics image is not displayed on the display device. A timer means for counting the duration of the state in which the lyrics information is displayed, and a predetermined time predetermined by the timer means when the lyrics information display determining means determines that the lyrics information is not displayed on the display device during the performance of the music piece. A video switching prohibiting unit for prohibiting a video displayed by the display device from being switched from a video by the first video output unit to a video by the second video output unit by the video switching unit until the time is measured; With.

According to this musical sound generating device, in addition to the effect of the musical sound generating device according to the first aspect, the video switching prohibiting means causes the lyrics information display judging means to display the lyrics information on the display device during the performance of the music piece. During a period from the time when it is determined that the image is not displayed to the time when the predetermined time predetermined by the timing means is measured, the video displayed by the display device is changed from the video by the first video output means to the second video by the video switching means. Since the switching to the video by the video output means is prohibited, it is possible to avoid such a disadvantage that the video by the second video output means is frequently displayed for an extremely short time.

A third aspect of the present invention is the musical tone generating apparatus according to the first or second aspect, wherein the lyrics image display determining means includes a voice converted by the voice inputting means. The signal level is detected, and when the detected level is equal to or lower than a predetermined level, it is determined that the lyrics image is not displayed on the display device.

According to this musical sound generating device, in addition to the effects of the musical sound generating device according to claim 1 or 2, the lyric image is not displayed on the display device due to the input level of the voice input means such as a microphone. Even if lyrics display control data for controlling the timing of displaying and erasing the lyrics video in synchronization with the music performance does not exist, such as when the lyrics video is embedded in the background video in advance, Can be switched.

According to a fourth aspect of the present invention, there is provided the musical sound generating apparatus according to the first or second aspect, wherein the lyrics image displayed by the first image output means is a lyrics image. Based on the display control data, the timing of display and erasure is controlled in synchronization with the performance of the song, and the lyrics image display determining means determines whether the lyrics image is displayed on the display device based on the lyrics display control data. Judge.

According to this tone generator, in addition to the effect of the tone generator according to claim 1 or 2, it can be determined very accurately whether or not a lyric image is displayed on the display device.

For example, when determining whether or not a lyric image is displayed on the display device based on the input level of the voice input means, if the singer intentionally or for some reason interrupts the singing voice, the lyric image is displayed on the display device. Is erroneously determined that is not displayed, but this is not the case if the determination is made based on the lyrics display control data.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a circuit block diagram of a karaoke apparatus as an example of a musical sound generating apparatus according to the present invention. The karaoke apparatus main body 1 includes an LED group 3, a hard disk device 4, a CPU 5, a receiving device 6, display information. It comprises a generating device 7, an audio reproducing device 8, and an input level detecting device 9. An output terminal of the CPU 5 is connected to a control signal input terminal of the moving image reproducing players 11 and 12 via an input / output interface (not shown), and an output terminal of the moving image reproducing players 11 and 12 is connected to an input terminal of the display information generating device 7. Connected to the end. An output terminal of the display information generating device 7 is connected to an input terminal of the display device 13, and an output terminal of the audio reproducing device 8 is connected to one input terminal of the mixing amplifier 14.
An output terminal of the mixing amplifier 14 is connected to an input terminal of the speaker 15, and an input terminal of the input level detection device 9 is connected to an output terminal of the microphone 16. The output terminal of the microphone 16 is also connected to the other input terminal of the mixing amplifier 14. The receiving device 6 receives a modulated signal by infrared light from the remote controller 17.
When song data is recorded in addition to the background video in which lyrics telops are embedded in, for example, a laser disk reproduced by one of the moving image reproducing players 11, the hard disk device 4 is unnecessary, and the moving image reproducing player is unnecessary. 1
The performance data included in the music data from No. 1 may be supplied to the audio reproducing device 8.

The karaoke apparatus main body 1 causes the display device 13 to display the background image of the performance music, the lyrics telop, etc., and outputs the singing voice of the singer from the speaker 15 together with the accompaniment sound. The LED group 3 displays a music selection number input by the user and other setting conditions. The hard disk device 4 stores a large number of music data including performance data for generating an accompaniment sound signal of a music piece. CPU5
Controls the entire karaoke apparatus main body 1. Receiving device 6
Receives an infrared transmission signal from the remote controller 17 and outputs an operation signal according to a user operation. The display information generating device 7 is controlled by the CPU 5 to display a video signal from the moving image reproducing player 11 on the display device 1.
3 and a state in which the video signal from the moving image reproducing player 12 is output to the display device 13. The sound reproducing device 8 generates and outputs an accompaniment sound signal of the music piece reserved by the user based on the music piece data included in the music piece data stored in the hard disk device 4. The input level detection device 9 detects the level (signal strength) of the audio signal from the microphone 16 and outputs a detection signal. One of the moving image reproducing players 11 and 12 outputs a video signal of a background image in which lyrics telop is embedded in advance, and the other moving image reproducing player 1
2 outputs a video signal such as an advertisement or information. The display device 13 displays an image on a display screen based on the image signal from the display information generation device 7. The mixing amplifier 14 amplifies the accompaniment sound signal from the sound reproducing device 8 and the sound signal from the microphone 16 and mixes and outputs the mixed sound signal. The speaker 15 converts a signal from the mixing amplifier 14 into a sound. The microphone 16 converts a singer's singing voice into a voice signal. The remote controller 17
It has a plurality of key switches and the like, and outputs an operation signal based on a user's operation as a modulation signal by infrared light.

That is, the microphone 16 constitutes voice input means for converting the singing voice of the singer into a voice signal. The moving image reproduction player 11 constitutes a first video output means for displaying a background video and a lyric video of a music piece played on the display device 13. The other video playback player 12
Constitutes a second video output unit that causes the display device 13 to display a video different from the video output by the first video output unit. The input level detecting device 9 constitutes a lyric image display determining means for determining whether or not a lyric image is displayed on the display device 13. The CPU 5 and the display information generating device 7 display the image by the second image output means only when the lyrics information display determining means determines that the lyrics image is not displayed on the display device 13 during the performance of the music piece. Is displayed on the display device 13.
The CPU 5 controls the display device 13 by the lyrics image display determining means.
Of a state in which it is determined that the lyric image is not displayed. CPU5
Is displayed during a period from the time when the lyrics information display determining means determines that the lyrics information is not displayed on the display device 13 to the time when the predetermined time predetermined by the timing means is measured. A video switching prohibition unit that prohibits a video displayed by the device 13 from being switched from a video by the first video output unit to a video by the second video output unit by the video switching unit.

Next, the essential points of the operation of the karaoke apparatus thus configured will be described. When a user such as a singer operates the remote controller 17 and inputs a song number of a reserved song, an operation signal corresponding to the user's operation is output from the remote controller 17 as a modulation signal based on infrared light, which is output. An operation signal corresponding to the operation of the user is output from the receiving device 6 to the CPU 5 after being received by the receiving device 6. Thus, the CPU 5 searches the hard disk device 4 for the song data of the reserved song based on the song number of the reserved song, reads out the performance data included in the song data, outputs the data to the audio reproducing device 8, and designates the song. A music designation signal is output to the moving image reproduction player 11. Thereby, the audio reproducing device 8 generates an accompaniment sound signal of the reserved music piece based on the performance data, and outputs it to the mixing amplifier 14. Then, the mixing amplifier 14 amplifies the accompaniment sound signal from the sound reproducing device 8 and the sound signal from the microphone 16, mixes them, and outputs the mixed signal to the speaker 15. Thus, the singing voice and the accompaniment sound of the singer are output from the speaker 15. Further, a video signal from one of the moving image reproducing players 11 is output to the display device 13 via the display information generating device 7, and the background video of the music piece is displayed by the display device 13. Lyric telops are embedded in the background video in advance.

On the other hand, a voice signal from the microphone 16 corresponding to the singing voice of the singer is also output to the input level detecting device 9, which detects the level of the voice signal and performs detection in accordance with the detected level. A signal is output to CPU5. Accordingly, the CPU 5 determines whether or not the input level of the microphone 16 is equal to or lower than a predetermined level. If the input level is equal to or lower than the predetermined level, the CPU 5 measures the continuation time of the input level. If the time exceeds a predetermined time of about seconds, the other moving image reproducing player 12 is driven, the display information generating device 7 is controlled, and the video signal from the other moving image reproducing player 12 is output to the display device 13. Thus, an image such as an advertisement or information is displayed on the display screen of the display device 13.

When the input level of the microphone 16 detected by the input level detecting device 9 exceeds a predetermined level, the CPU 5 stops the reproducing operation of the other moving image reproducing player 12 and controls the display information generating device 7. , The video signal from one of the moving image reproducing players 11
Output. Thus, the display screen of the display device 13 is
The display switches to the background video with the lyrics telop embedded.

As described above, when the singing voice of the singer is not emitted for a certain period of time as in the case of the interlude, it is assumed that the lyrics telop is not displayed on the display screen of the display device 13, and Switch the display screen from background video to video such as advertisements and information.

Next, the procedure of the above-described video switching process will be described with reference to the flowchart shown in FIG.

When the performance is started, a background image of the performance music is selected (S1). Specifically, the CPU 5 controls the display information generating device 7 to output a video signal from one of the moving image reproducing players 11 to the display device 13. Then, the image state flag is set to 1 (S2). Specifically, CP
U5 sets the video status flag stored in the memory (not shown) to 1. This video state flag is a flag indicating which video signal of the video reproduction players 11 and 12 is being supplied to the display device 13 via the display information generating device 7, and when the video status flag is 0 Indicates that the video signal of one video player 11 is supplied to the display device 13, and when the video status flag is 1, the video signal of the other video player 12 is supplied to the display device 13. It represents that it is. However, since the singer's singing voice does not exist in the state of the prelude immediately after the start of the performance,
During this time, the video state flag is set to 1 in S2 in order to prevent the video signal from the other video reproduction player 12 from being switched to the state supplied to the display device 13.

Then, it is determined whether or not the input level is lower than a predetermined value (S3). Specifically, based on the detection signal from the input level detection device 9, the CPU 5 checks whether or not the singing voice of the singer input to the microphone 16 is equal to or lower than a predetermined level. This predetermined level is set to such an extent that ambient noise or the like input to the microphone 16 is not mistaken for the singing voice of the singer.

If the input level is lower than a predetermined value (S3:
YES), it is determined that the singer is not singing, and the current time is obtained (S4). Specifically, CPU
5 reads the current time from a built-in clock. Then, it is determined whether or not a predetermined time has elapsed from the clock start time to the current time (S5). Specifically, the CPU 5
The difference between the clock start time stored in the memory in S13 to be described later and the current time read in S4 is calculated, and it is checked whether or not the calculation result is equal to or longer than a predetermined time. The predetermined time is set to such a time that the singer does not utter the singing voice due to interlude when the singing voice of the singer is interrupted due to breathing or the like.

If the predetermined time has elapsed (S5: YE
S), it is determined whether or not the video state flag is 0 (S)
6). Specifically, the CPU 5 reads the video state flag stored in the memory and checks whether it is 0 or not.

If the video status flag is 0 (S6: YE
S) Since the background image of the music piece and the lyrics telop are displayed on the display screen of the display device 13, the display screen of the display device 13 is switched to an image such as an advertisement or information (S7). Specifically, the CPU 5
Activates the other moving image reproducing player 12 and controls the display information generating device 7 to supply the video signal from the other moving image reproducing player 12 to the display device 13. Then, the image state flag is set to 1 (S8). Specifically, CPU
5 rewrites the video state flag stored in the memory to 1. Then, it is determined whether or not the performance of the performance music has been completed (S9). Specifically, it is determined whether or not the CPU 5 has supplied all the performance data read from the hard disk device 4 to the audio reproducing device 8. If the performance of the music has been completed (S9: YES), this routine ends.

In S9, if the performance of the music has not been completed (S9: NO), the process returns to S3 and the video switching process is continued.

In S6, if the video state flag is not 0 (S6: NO), it means that a video such as an advertisement or information has already been displayed on the display screen of the display device 13, and it is necessary to switch the video. Since there is not, the process returns to S3.

If the predetermined time has not elapsed in S5 (S5: NO), the process returns to S3 in order to avoid frequent image switching.

If the input level is not equal to or less than the predetermined value in S3 (S3: NO), it means that the singing voice of the singer has been input to the microphone 16, so it is determined whether or not the video state flag is 1. (S10). Specifically, the CPU 5 checks whether or not the video state flag stored in the memory is “1”. If the video state flag is 1 (S10: YES), it means that a video such as an advertisement or information is displayed on the display screen of the display device 13, and thus a background video is selected (S1).
1). Specifically, the CPU 5 stops the reproducing operation of the other moving image reproducing player 12, controls the display information generating device 7, and supplies the video signal from the one moving image reproducing player 11 to the display device 13. Then, set the video state flag to 0
Is set (S12). Specifically, the CPU 5 rewrites the video state flag stored in the memory to 0.
Then, the clock start time is set to the current time (S13),
Proceed to S9. Specifically, the CPU 5 reads the current time from a built-in clock, and stores the time in a memory as a clock start time.

If the video state flag is not 1 in S10 (S10: NO), it means that the background video of the music piece with the lyrics telop embedded therein has already been displayed on the display screen of the display device 13. Proceed to.

In the above embodiment, whether or not the lyrics telop is displayed on the display screen of the display device 13 is determined based on the input level to the microphone 16, but the lyrics telop is superimposed on the background image. When there is lyrics display control data for controlling the timing of display and erasure in synchronization with the performance of a song as in the karaoke apparatus configured as described above, the display on the display device 13 is displayed using the lyrics display control data. It may be determined whether a lyrics telop is displayed on the screen.

FIG. 3 is a circuit block diagram of a karaoke apparatus configured to determine whether or not a lyrics telop is displayed on the display screen of the display device 13 using the lyrics display control data. The apparatus includes a modem 2, and the modem 2 is connected to a host computer 22 via a communication line 21. Host computer 2
A large number of music data are stored in the second storage device,
You are building a database. The music data is appropriately distributed to the hard disk device 4 from the host computer 22 via the communication line 21.

FIG. 4 is an explanatory diagram for explaining the structure of the music data. The music data is composed of performance data for generating an accompaniment sound of a performance music by the audio reproducing device 8 and one of the moving image reproducing players 11. It is composed of lyrics information for superimposing the lyrics telop on the reproduced background video and lyrics display control data for controlling the timing of displaying and erasing the lyrics telop in synchronization with the performance of the song. .

FIG. 5 is an explanatory diagram for explaining the concept of the lyrics information. The lyrics information is a set of blocks constituting a part of the lyrics of the musical piece, and each block is arranged in the order of display. .

FIG. 6 is an explanatory diagram for explaining the concept of the lyrics display control data. The lyrics display control data is a set of flag information, and is set at predetermined time intervals from the left end of FIG.
Read by PU5. In FIG. 6, "-" represents an event of not performing display control, "D" represents an event of displaying lyrics of the next block, and "C" represents an event of deleting displayed lyrics. .

The karaoke apparatus shown in FIG. 3 is different from the karaoke apparatus shown in FIG. 1 in that the karaoke apparatus main body 1 is not provided with the input level detecting device 9. Also, the background video reproduced by one of the moving image reproducing players 11 does not have the lyrics telop embedded therein, and the CPU 5 reads out the lyrics information and the lyrics display control data in the music data of the performance music from the hard disk device 4. By controlling the display information generating device 7, the lyrics telop is superimposed on the background video reproduced by the one moving image reproduction player 11. Therefore, the background video reproduced by one of the moving image reproducing players 11 may be a video unique to each music piece, or may be a video common to each genre of the music piece. In addition, a video such as an advertisement or information may be distributed from the host computer 22 via the communication line 21.
, The hard disk device 4 may be used instead of the other moving image reproduction player 12.

Next, the procedure of the video switching process by the karaoke apparatus shown in FIG. 3 will be described with reference to the flowchart shown in FIG.

When the performance is started, a background image of the performance music is selected (S21). Specifically, the CPU 5 controls the display information generating device 7 to output a video signal from one of the moving image reproducing players 11 to the display device 13. Then, the lyrics deletion flag is set to 0 (S22). In particular,
The CPU 5 sets the lyrics deletion flag stored in a memory (not shown) to 0. This lyrics deletion flag is displayed on the display device 13.
Is a flag indicating whether or not the lyrics telop superimposed on the background video displayed on the display screen of the lyrics screen has been erased. When the lyrics erasure flag is 0, it indicates that the lyrics telop has not been erased. When the lyrics deletion flag is 1, it indicates that the lyrics telop has been deleted.

Then, the event data is read (S2
3). Specifically, the CPU 5 executes the operation of the hard disk device 4
, The lyrics display control data of the music piece is read out and stored in a memory (not shown) in advance, and the event of the lyrics display control data is read out from the memory. Then, an event is determined (S24). Specifically, the CPU 5 checks the type of the event read in S23.

If the event is "D", that is, lyrics display, the next lyrics information is read (S25), and the lyrics telop is displayed (S26). More specifically, the CPU 5 reads out the next block of the lyrics information of the musical piece from the hard disk device 4 and supplies it to the display information generating device 7 to superimpose the lyrics telop on the background video. Then, it is determined whether or not the video state flag is 1 (S27). Specifically, the CPU 5 reads the video state flag stored in the memory and checks whether it is “1”.

If the video status flag is 1, (S27: Y
ES), the background video is selected (S28), the video status flag is set to 0 (S29), and the lyrics deletion flag is set to 0 (S3).
0), and return to S23. Specifically, the CPU 5 controls the display information generation device 7 to control the other video reproduction player 12.
Is switched from a state in which the video signal is supplied to the display device 13 to a state in which the video signal from one of the moving image reproducing players 11 is supplied to the display device 13. The video state flag and the lyrics deletion flag stored in the memory are switched. Is rewritten to 0.

If the image state flag is not 1 in S27 (S27: NO), it means that the background image of the music piece has already been selected, so the flow proceeds to S30.

In step S24, if the event is "C", that is, the lyrics are deleted, the lyrics telop is deleted (S3).
1), the clock start time is set to the current time (S32), the lyrics deletion flag is set to 1 (S33), and the process returns to S23. More specifically, the CPU 5 controls the display information generating device 7 to delete the lyrics telop superimposed on the background image, reads the current time from the built-in clock, and reads the current time stored in the memory. The start time is rewritten to the current time, and the lyrics deletion flag stored in the memory is rewritten to 1.

In S24, if the event is "-", that is, there is no event, it is determined whether or not the lyrics deletion flag is 1 (S34). Specifically, the CPU 5 reads the lyrics deletion flag stored in the memory, and checks whether or not it is “1”.

If the lyrics deletion flag is 1 (S34: Y
ES), since the lyrics telop is not superimposed on the background image, the current time is obtained (S).
35) It is determined whether or not a predetermined time has elapsed from the clocking start time (S36). Specifically, the CPU 5 reads the current time from a built-in clock, and stores the current time and S3
In step 2, a difference from the clock start time stored in the memory is calculated, and it is checked whether the calculation result is equal to or longer than a predetermined time.

If the predetermined time has elapsed from the clock start time (S36: YES), it is determined whether or not the image state flag is 0 (S37). Specifically, the CPU 5 reads the video state flag stored in the memory and checks whether it is 0 or not.

If the image state flag is 0 (S37: Y
ES), since the background image of the music piece is displayed on the display screen of the display device 13, the display screen of the display device 13 is switched to an image such as an advertisement or information (S38). Specifically, the CPU 5 activates the other moving image reproducing player 12 and controls the display information generating device 7 to supply a video signal from the other moving image reproducing player 12 to the display device 13. Then, the image state flag is set to 1 (S39). Specifically, the CPU 5
The video status flag stored in the memory is rewritten to 1. Then, it is determined whether or not the performance of the music has been completed (S40). More specifically, the CPU 5 transmits all the performance data read from the hard disk device 4 to the audio reproducing device 8.
Find out if you have supplied. If the performance of the performance music has been completed (S40: YES), this routine ends.

In S40, if the performance of the music piece has not been completed (S40: NO), the process returns to S23 and the video switching process is continued.

If the video state flag is not 0 in S37 (S37: NO), it means that a video such as an advertisement or information is already displayed on the display screen of the display device 13, and it is necessary to switch the video. Since there is not, the process returns to S23.

In S36, if the predetermined time has not elapsed from the clocking start time (S36: NO), the process returns to S23 in order to avoid frequent video switching.

If the lyrics deletion flag is not 1 in S34 (S34: NO), it means that the lyrics telop is superimposed on the background image, and thus S23
Return to

As described above, it is determined whether or not the lyrics telop is superimposed on the background video based on the lyrics display control data. If the continuation is continued, the display screen of the display device 13 is switched from the background image of the music piece to an image such as an advertisement or information.

[0056]

As described above, according to the musical sound generator of the first aspect of the present invention, the video switching means displays the lyrics video on the display device by the lyrics information display determining means during the performance of the music piece. Only when it is determined that the video has not been output, the video by the second video output means is displayed on the display device. Is used as a video for various advertisements and information, so that various advertisements and information can be displayed during the performance of the music piece without disturbing the display of the lyrics video and the background video as much as possible.

According to the musical sound generating apparatus of the present invention, in addition to the effect of the musical sound generating apparatus of the first aspect, the video switching prohibiting means displays the lyrics information during the performance of the music piece. From the time when the lyric information is determined not to be displayed on the display device by the deciding means to the time when the predetermined time predetermined by the timing means is measured, the image displayed by the display device is changed to the first by the video switching means. Since the switching from the video by the second video output unit to the video by the second video output unit is prohibited, it is possible to avoid such an inconvenience that the video by the second video output unit is frequently displayed for a very short time.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the present invention, in addition to the effects of the tone generating apparatus of the first or second aspect, the display device can be controlled by the input level of a voice input means such as a microphone. Lyrics display that controls the timing of the display and deletion of the lyrics video in synchronization with the music, such as when the lyrics video is embedded in the background video in advance, because it can be determined that the lyrics video is not displayed Even when there is no control data, video switching is possible.

According to the musical sound generating device of the invention described in claim 4, in addition to the effect of the musical sound generating device according to claim 1 or 2, it is determined whether or not a lyric image is displayed on the display device. Can be determined very accurately.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a karaoke apparatus as an example of a musical sound generating apparatus according to the present invention.

FIG. 2 is a flowchart illustrating a procedure of a video switching process performed by the karaoke apparatus in FIG. 1;

FIG. 3 is a circuit block diagram of a karaoke apparatus according to another embodiment.

FIG. 4 is an explanatory diagram illustrating a configuration of music data used in the karaoke apparatus of FIG. 3;

FIG. 5 is an explanatory diagram for explaining the concept of lyric information included in music data used in the karaoke apparatus of FIG. 3;

FIG. 6 is an explanatory diagram illustrating the concept of lyrics display control data included in music data used in the karaoke apparatus of FIG. 3;

FIG. 7 is a flowchart illustrating a procedure of a video switching process performed by the karaoke device of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Karaoke apparatus main body 2 Modem 3 LED group 4 Hard disk drive 5 CPU 6 Receiving device 7 Display information generating device 8 Audio reproducing device 9 Input level detecting device 11 Video reproducing player 12 Video reproducing player 13 Display device 14 Mixing amplifier 15 Speaker 16 Microphone 17 Remote controller 21 Communication line 22 Host computer

Claims (4)

[Claims] 1. A tone generator comprising: voice input means for converting a singer's singing voice into a voice signal; and first video output means for displaying a background video and a lyric video of a musical performance on a display device. Second image output means for displaying an image different from the image by the first image output means on the display device, and lyrics image display determination means for determining whether or not a lyrics image is displayed on the display device Only when the lyrics information display determining means determines that the lyrics video is not displayed on the display device during the performance of the music piece, the video by the second video output means is displayed on the display device. A musical sound generator comprising: a video switching means for displaying. 2. A time measuring means for measuring a duration of a state in which the lyrics image display judging means judges that the lyrics image is not displayed on the display device; and displaying the lyrics information during the performance of the music piece. The video displayed on the display device is switched to the video switching during a period from when the determination unit determines that the lyrics information is not displayed on the display device to when the predetermined time predetermined by the timing device is measured. 2. The musical sound generating apparatus according to claim 1, further comprising: a video switching prohibiting unit that prohibits a unit from switching from a video by the first video output unit to a video by the second video output unit. 3. The lyric image display determining means detects a level of an audio signal converted by the audio input means,
3. The musical sound generator according to claim 1, wherein it is determined that the lyrics image is not displayed on the display device when the detection level is equal to or lower than a predetermined level. 4. The lyrics video displayed by the first video output means is controlled in timing of display and erasure in synchronization with the performance of a song based on the lyrics display control data, and the lyrics video display determination means is provided. 3. The musical sound generator according to claim 1, wherein the controller determines whether or not a lyrics image is displayed on the display device based on the lyrics display control data.