Karaoke equipment

Abstract

The system seamlessly switches from background music to vocal tracks without requiring any effort from the user. [Solution] A karaoke device 1 having a performance unit 12 that plays songs registered in a reserved song list 15 includes a first registration unit 20 that registers BGM songs in the reserved song list 15 so that there is a predetermined number of BGM songs to be played for background music, a determination unit 22 that determines whether or not there is vocal input from the user when a song is being played by the performance unit 12, and a modification unit 23 that, when the performance unit 12 is playing a BGM song and the determination unit 22 determines that there is vocal input, changes the BGM song being played to a song to be played for singing.

Description

Technical Field

[0004] , , , , , , , ,

[0005] , , , ,

[0001] The present invention relates to a karaoke device.

Background Art

[0002] Conventionally, a karaoke device plays a reserved singing song according to the operation of a user. During a period when the singing song is not being played (hereinafter referred to as an inter-song period), it plays a CM introducing recommended songs or a BGM song stored in advance.

[0003] For example, according to Patent Document 1, a karaoke device includes a storage unit that stores accompaniment data of a song composed of a plurality of performance sections including a prelude section, a singing section, and an interlude section, and an acoustic processing unit that generates a sound output signal used for BGM performance performed during a time period when there is no reservation for karaoke performance and karaoke singing based on the accompaniment data, and a performance control unit that outputs karaoke performance sound or BGM performance sound from a speaker based on the sound output signal. Then, when there is an instruction to switch to the karaoke performance of a certain song during the BGM performance of the certain song, the performance control unit performs BGM performance until the performance of the performance section being performed at the time of the switching instruction ends, and then starts karaoke performance from a predetermined singing section.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in conventional technologies such as those described in Patent Document 1, a karaoke machine can play the same song that is being played as background music and allow the user to sing along. In this case, the user must use a remote control to switch between playing background music and playing the song, which is time-consuming.

[0006] The objective of this invention is to provide a karaoke device that allows users to smoothly switch from playing background music to playing vocal songs without any hassle. [Means for solving the problem]

[0007] To solve the above problems, the karaoke device of the present invention is a karaoke device having a performance unit that plays songs registered in a reserved song list, and includes a first registration unit that registers BGM songs to be played as background music in a predetermined number in the reserved song list, a determination unit that determines whether or not there is input of singing voice from the user when a song is being played by the performance unit, and a modification unit that, when the determination unit determines that there is input of singing voice when the BGM song is being played by the performance unit, changes the BGM song being played to a song to be played for singing. [Effects of the Invention]

[0008] According to the present invention, it is possible to smoothly switch from playing background music to playing vocal music without requiring any effort from the user. [Brief explanation of the drawing]

[0009] [Figure 1] This is a block diagram showing a karaoke device according to an embodiment of the present invention. [Figure 2] This table shows an example of a reserved song list in a karaoke device according to an embodiment of the present invention. [Figure 3] This table shows an example of a reserved song list in a karaoke device according to an embodiment of the present invention. [Figure 4] This table shows an example of a reserved song list in a karaoke device according to an embodiment of the present invention. [Figure 5] This table shows an example of a reserved song list in a karaoke device according to an embodiment of the present invention. [Figure 6] This table shows an example of a reserved song list in a karaoke device according to an embodiment of the present invention. [Figure 7] This flowchart shows an example of operation in a karaoke device according to an embodiment of the present invention. [Figure 8] This flowchart shows an example of operation in a karaoke device according to an embodiment of the present invention. [Modes for carrying out the invention]

[0010] [Karaoke equipment] The following describes a karaoke device 1 according to an embodiment of the present invention. Figure 1 is a block diagram showing the configuration of the karaoke device 1 according to this embodiment. As shown in Figure 1, the karaoke device 1 comprises a karaoke unit 2, a microphone 3, a speaker 4, a display device 5 such as a monitor, and a remote control device 6. The karaoke device 1 is installed in a location such as a karaoke room. The karaoke device 1 may be connected to an external server device (not shown) in a communicative manner to constitute a karaoke system.

[0011] In this embodiment, the karaoke device 1 has a function to play songs reserved for singing by the user, as well as a function to play background music when no songs are reserved for singing.

[0012] The karaoke unit 2 is connected to the microphone 3, speaker 4, display device 5, and remote control device 6 by wire or wireless connection. The microphone 3 converts the user's singing voice into an audio signal and inputs it to the karaoke unit 2. The speaker 4 emits the user's singing voice or the performance of the song or background music based on the sound signal emitted from the karaoke unit 2. The display device 5 displays various screens based on the video signal etc. from the karaoke unit 2, for example, it displays lyrics along with background video in sync with the performance of the song. Note that when background music is being played, the display device 5 does not need to display lyrics.

[0013] The remote control device 6 is primarily composed of a touch panel. The remote control device 6 displays a GUI with various screens and operation buttons on the touch panel, and accepts login and song selection operations via the touch panel. The remote control device 6 and the karaoke unit 2 are paired via wireless communication, allowing various information to be sent and received between the remote control device 6 and the karaoke unit 2.

[0014] The remote control device 6 transmits user identification information (user ID) and other information entered by the user in response to the user's login operation to the karaoke unit 2, allowing the user to log in to the karaoke unit 1. The remote control device 6 accepts the user's search for and selection of songs to sing, and in response to the operation of the reservation button, transmits the song identification information (song ID) of the selected song to the karaoke unit 2.

[0015] The karaoke unit 2 comprises a control unit 10, a memory unit 11, a performance unit 12, and an audio input / output unit 13. The control unit 10 is configured with a CPU (Central Processing Unit), etc., and provides overall control of the karaoke unit 2. The memory unit 11 is configured with a storage medium such as ROM (Read Only Memory), RAM (Random Access Memory), HDD (Hard Disk Drive), etc., and stores programs and data for controlling each part and function of the karaoke device 1.

[0016] For example, the memory unit 11 stores the user ID of each user of the karaoke device 1 to identify each user. The control unit 10 receives the user ID input in response to the user's login operation from the remote control device 6, and confirms that the received user ID is stored in the memory unit 11, thereby accepting the user's login. As a result, the user logs in to the karaoke device 1. Note that the user ID may be stored in a server device communicably connected to the karaoke device 1.

[0017] The memory unit 11 stores basic information such as the music ID, song title, singer name, genre, etc. for each music that the karaoke device 1 can play, and also stores the music data of each music regardless of whether it is a singing music or a BGM music. For example, the music data includes performance data, reference data, lyric data, etc. Note that the music data may be stored in a server device communicably connected to the karaoke device 1.

[0018] In the music data, the performance data is data representing the accompaniment sound of the performance, and is composed of, for example, MIDI data. The reference data is pitch information used as a reference when evaluating the karaoke singing by the user. The reference data is also used to determine whether there is an input of singing voice from the user. The lyric data is the data that forms the lyric caption displayed on the display device 5. Regarding the lyric caption, it is desirable not to display the lyric caption when playing the BGM music and to display the lyric caption when playing the singing music.

[0019] The memory unit 11 stores a reserved song list 15 for registering the reserved song information of the singing music or BGM music in the order of being played. For example, the reserved song list 15 stores the reserved song information of the singing music reserved on the karaoke device 1 according to the operation of the remote control device 6, etc., and also stores the reserved song information of the BGM music regardless of the reservation operation.

[0020] As shown in Figure 2, the reserved song information includes the song's performance order, the song's identification information, a status indicating whether the song is a vocal track or background music track, and a change flag indicating whether the performance has been changed between a vocal track and a background music track.

[0021] In the reserved song list 15, the performance order of the song currently playing is set to 0, and the performance order of reserved songs is set in ascending order from 1. The status of reserved song information registered in response to the user's reservation operation is set to "Singing Song", and the status of reserved song information automatically registered as a BGM song by the karaoke machine 1 is set to "BGM". The reserved song information change flag is initially set to "0" or "OFF" regardless of whether it is a BGM song or a singing song, and is set to "1" or "ON" when the status changes from "BGM" to "Singing Song". Figure 2 shows an example of the reserved song list 15 where a BGM song (Song A) is playing and five BGM songs (Songs B to F) are reserved.

[0022] In karaoke machine 1, when the currently playing song (the song with a performance order of 0) finishes playing, the first song in the reserved song list 15 (the song with a performance order of 1) begins playing. At this time, the first song is switched from reserved to playing, so the performance order of the first song in the reserved song list 15 changes from 1 to 0, and the performance orders of the remaining reserved songs are shifted from 2-5 to 1-4, respectively.

[0023] The performance unit 12 is configured to include a sound source such as a MIDI sound source, and is a performance means that reads the corresponding song data from the storage unit 11 in the order in which the reserved songs are registered in the reserved song list 15 of the storage unit 11, and generates a performance signal based on the performance data of the song data. The performance unit 12 outputs the generated performance signal to the speaker 4 via the audio input / output unit 13.

[0024] Specifically, the playback unit 12 reads the song data of the song identification information shown in the reserved song information of the first song among the reserved songs in the reserved song list 15 from the storage unit 11 and starts playing the song data of that first song. The playback unit 12 switches the first song in the reserved song list 15 from reserved to playing, changes the playback order from 1 to 0, and re-registers the reserved song information of that first song. The playback unit 12 also advances the playback order of the remaining reserved songs and re-registers the reserved song information of the remaining songs. When the playback unit 12 finishes playing a song, it deletes the reserved song information of the song that was playing in the reserved song list 15.

[0025] The audio input / output unit 13 is connected to the microphone 3 and receives the singing audio signal from the user singing karaoke using the microphone 3. The audio input / output unit 13 is also connected to the speaker 4 and outputs the performance signal of the singing song or background music, as well as the singing audio signal from the karaoke performance, to the speaker 4. The audio input / output unit 13 also includes a mixer (digital mixer) and amplifier, which mix the performance signal and the singing audio signal, and amplify this mixed signal for output. The volume level of the performance signal and the singing audio signal reflects the volume setting made by the user.

[0026] The control unit 10 controls each part and function of the karaoke device 1 by performing calculations based on programs and data stored in the storage unit 11. For example, in this embodiment, the control unit 10 operates as a first registration unit 20, a second registration unit 21, a determination unit 22, and a modification unit 23 by executing a program stored in the storage unit 11. As a result, the control unit 10 realizes a function to play songs reserved for the user to sing, as well as a function to play background music when no songs are reserved, and further, a function to switch from playing background music to playing songs.

[0027] The first registration unit 20 pre-registers BGM song reservation information in the reserved song list 15 so that the number of BGM songs to be played for background music reaches a predetermined number (for example, 5 songs). For example, when the karaoke machine 1 is started up, as shown in Figure 2, the first registration unit 20 adds a song randomly selected from the songs stored in the memory unit 11 according to predetermined recommendation conditions to the end of the reserved song list 15 as a BGM song. If no songs are registered in the reserved song list 15, a BGM song is added to the beginning of the reserved song list 15. At this time, the first registration unit 20 selects other BGM songs from the songs stored in the memory unit 11 and adds them to the end of the reserved song list 15 until the number of BGM songs reserved in the reserved song list 15 reaches a predetermined number.

[0028] Furthermore, when the first BGM track among the BGM tracks reserved in the reserved track list 15 starts playing, that is, when the first BGM track switches from reserved to playing and the playing order changes from 1 to 0, the first registration unit 20 re-registers the playing order of the remaining reserved BGM tracks in the reserved track list 15 by moving them up. At this time, since the number of reserved BGM tracks in the reserved track list 15 has decreased by one, the first registration unit 20 selects other BGM tracks from the tracks stored in the memory unit 11 and adds them to the end of the reserved track list 15 to register the number of reserved BGM tracks to a predetermined number. Note that when a BGM track starts playing, there are no vocal tracks registered in the reserved track list 15, so there is no need to consider the playing order of vocal tracks.

[0029] The second registration unit 21 registers the reserved song information of the song reserved by the karaoke machine 1 in the reserved song list 15 in response to the operation of the remote control device 6, etc. Here, the reserved song list 15 always has a predetermined number of BGM songs registered as reserved. The second registration unit 21 registers the reserved song in the reserved song list 15 in the performance order immediately before the first BGM song (interrupt reservation). That is, in the reserved song list 15, the reserved song is inserted and registered in the position where the first BGM song was registered, and the reserved BGM songs are re-registered with their performance order shifted down. If there are other reserved song songs in the reserved song list 15, the reserved song song will be registered in the performance order immediately after the last song song.

[0030] For example, when a vocal track is being played, the second registration unit 21 registers the reserved vocal track in the reserved track list 15 in the order immediately preceding the first BGM track in the performance sequence, so that the sequence changes from Figure 3(a) to Figure 3(b). Figure 3(a) shows an example of the reserved track list 15 where a vocal track (track A) is being played and five BGM tracks (tracks B to F) are reserved. Figure 3(b) shows an example where one vocal track (track 1) has been reserved for the reserved track list 15 in Figure 3(a).

[0031] On the other hand, when a vocal track is reserved while a background music track is playing, the second registration unit 21 registers the reserved vocal track in the reserved track list 15 in the order immediately preceding the first background music track, as shown in Figure 4(a) to Figure 4(b). In addition, it instructs the performance unit 12 to stop playing the background music, causing the background music to stop playing. Here, when a background music track is playing, the reserved track list 15 only contains background music tracks, regardless of whether they are currently playing or reserved. Therefore, the reserved vocal track will be registered at the beginning of the reserved track list 15. Figure 4(a) shows an example of the reserved track list 15 where a background music track (track A) is playing and five background music tracks (tracks B to F) are reserved. Figure 4(b) shows an example where one vocal track (track 2) has been reserved for the reserved track list 15 in Figure 4(a).

[0032] Then, when the second registration unit 21 stops the playback of the BGM track, the reserved track information of the BGM track currently playing is deleted from the reserved track list 15, as shown in Figure 4(b) to Figure 4(c). As a result, the playback unit 12 starts playing the track registered at the top of the reserved track list 15, i.e., the reserved vocal track. At this time, the vocal track is switched from reserved to playing, and the reserved track information of the vocal track in the reserved track list 15 is re-registered with the playback order changed from 1 to 0. Figure 4(a) shows an example of the reserved track list 15 where BGM track (track A) is playing and 5 BGM tracks (tracks B to F) are reserved. Figure 4(c) shows an example where the BGM track (track A) currently playing is deleted from the reserved track list 15 in Figure 4(b), and the reserved vocal track (track 2) is switched to playing.

[0033] Furthermore, the second registration unit 21 may re-register the reserved song information of the BGM song whose performance was stopped at the beginning of the reserved song list 15, thereby allowing the BGM song whose performance was stopped to be played again after the performance of the reserved vocal song has finished. In addition, the second registration unit 21 may restart the restart of the BGM song whose performance was stopped from the starting position of the BGM song, or it may store the position where the BGM song's performance was stopped when the performance of the BGM song was stopped, and restart the restart of the BGM song whose performance was stopped from the stored position.

[0034] The determination unit 22 determines whether or not there is input of singing voice from the user when a song (BGM or vocal song) is being played by the performance unit 12, regardless of whether it is a background music song or a vocal song.

[0035] Specifically, the determination unit 22 acquires the singing pitch of the singing audio signal input from the microphone 3 to the audio input / output unit 13. The determination unit 22 then compares the reference pitch of the reference data of the song being played by the performance unit 12 with the singing pitch of the input audio, and determines that the difference between the reference pitch and the singing pitch is within a predetermined error range and continues for a predetermined period of time. If the above conditions are met, the determination unit 22 determines that there is singing audio input, and if the above conditions are not met, it determines that there is no singing audio input.

[0036] For example, the predetermined error range is set to ±100 cents (semitone), and the predetermined duration is set to 80% of the notes in one phrase. However, the predetermined error range and predetermined duration are not limited to the above example and may be set to other values, and the predetermined duration may be set to 10 seconds.

[0037] The modification unit 23 changes the background music being played by the performance unit 12 to a vocal track if the determination unit 22 determines that there is vocal input while the background music is being played by the performance unit 12.

[0038] Specifically, the modification unit 23 changes the status of the reserved song information for the currently playing song in the reserved song list 15 from "BGM" to "Vocal Song" and changes the change flag for the reserved song information from "0" or "OFF" to "1" or "ON" as shown in Figure 5(a) to Figure 5(b). When the status of the reserved song information is changed from "BGM" to "Vocal Song" due to the input of vocal audio, setting the change flag to "1" or "ON" allows the system to determine that the status has changed from "BGM" to "Vocal Song" when the reserved song information is checked later, even if the status was "Vocal Song". Figure 5(b) shows an example where the reserved song list 15 in Figure 5(a) has been changed from the background music track (song A) to a vocal track (song A).

[0039] Furthermore, the karaoke device 1 should start displaying the lyrics on the display device 5 at the point when the status of the reserved song information for the song currently being played is changed from "BGM" to "Singing Song" (the point when the song being played is changed from a BGM song to a singing song), which should be considered the start time for the user to sing the song.

[0040] Furthermore, when the vocal track, which has been changed from a background music track as described above, is being played by the performance unit 12, if the determination unit 22 determines that there is no vocal input, the modification unit 23 changes the playing vocal track back to a background music track.

[0041] Specifically, the modification unit 23 changes the status of the reserved song information for the song currently being played in the reserved song list 15 from "Singing Song" to "BGM" and changes the modification flag for the reserved song information from "1" or "ON" to "0" or "OFF", so that it changes from Figure 5(b) to Figure 5(a).

[0042] Furthermore, the karaoke device 1 should consider the moment when the status of the reserved song information for the song currently being played is changed back from "singing song" to "BGM" (the moment when the song being played is changed from a singing song to a BGM song) as the point at which the user has finished singing that song, and should then end the display of the lyrics on the display device 5.

[0043] Furthermore, as shown in Figure 6(a) to Figure 6(b), when the change unit 23 changes a vocal track that has been changed from a background music track back to a background music track, and another vocal track is registered at the beginning of the reserved track list 15, it instructs the performance unit 12 to stop playing the changed background music track, thereby stopping the performance of the background music track. Figure 6(a) shows an example of the reserved track list 15 in which a vocal track (track A) that has been changed from a background music track (track A) is currently playing, and in addition to the five reserved background music tracks (tracks B to F), a vocal track (track 3) is also reserved. Figure 6(b) shows an example in which the reserved track list 15 in Figure 6(a) is changed from the currently playing vocal track (track A) back to a background music track (track A).

[0044] Here, the modification unit 23 stops the playback of the background music track, so that the reserved track information for the currently playing background music track is deleted from the reserved track list 15, as shown in Figure 6(b) to Figure 6(c). The playback unit 12 then starts playing the other vocal track registered at the top of the reserved track list 15. At this time, the other vocal track is switched from reserved to playing, and the reserved track information for that vocal track is re-registered in the reserved track list 15 with the playback order changed from 1 to 0. Figure 6(c) shows an example where the currently playing background music track (track A) is deleted from the reserved track list 15 in Figure 6(b), and the reserved vocal track (track 3) is switched to playing.

[0045] Furthermore, the modification unit 23 may re-register the reserved song information of the BGM song whose performance was stopped at the beginning of the reserved song list 15, thereby allowing the BGM song whose performance was stopped to be played again after the performance of the reserved vocal song has finished. In addition, the modification unit 23 may restart the restart of the BGM song whose performance was stopped from the beginning of the BGM song, or it may store the position where the BGM song's performance was stopped when the performance of the BGM song was stopped, and restart the restart of the BGM song whose performance was stopped from the stored position.

[0046] [Example of operation of this embodiment] Next, an example of the operation of the karaoke device 1 of this embodiment will be explained with reference to the flowcharts in Figures 7 and 8.

[0047] As shown in Figure 7, first, when the karaoke device 1 is started (step S1), the first registration unit 20 registers a predetermined number of background music tracks in the reserved song list 15 (step S2).

[0048] Next, the karaoke machine 1 plays the first song on the reserved song list 15 using the playback unit 12 (step S3). If the first song on the reserved song list 15 is a background music track (step S3: Yes), the playback unit 12 starts playing the background music track (step S4).

[0049] If a vocal track is reserved while a background music track is playing (Step S5: Yes), the second registration unit 21 registers the vocal track in the reserved track list 15, and the performance unit 12 stops playing the background music track (Step S6) and starts playing the reserved vocal track (Step S7). When the performance unit 12 finishes playing the reserved vocal track (Step S8: Yes), the flow of this example proceeds to Step S3 and moves on to playing the next track.

[0050] If, while the background music is playing, no vocal track is reserved (Step S5: No), the judgment unit 22 does not determine that there is input of vocal audio (Step S9: No), and the performance unit 12 does not end the performance of the background music (Step S10: No), then the flow of this example proceeds to Step S5, and the performance of the background music continues, repeating the judgments in Steps S5 and S9.

[0051] On the other hand, if the performance unit 12 finishes playing the background music (step S10: Yes), and the karaoke device 1 is not shut down (step S11: No), the flow of this example proceeds to step S3 and moves on to playing the next song. However, if the karaoke device 1 is shut down (step S11: Yes), the flow of this example ends.

[0052] Furthermore, if a vocal track is not reserved while a background music track is playing (Step S5: No), and the determination unit 22 determines that there is input for vocal audio (Step S9: Yes), the flow of this example proceeds to Step S20 in Figure 8, where the modification unit 23 changes the background music track that is currently playing to a vocal track (Step S20). Then, the performance unit 12 starts playing the changed vocal track (Step S21).

[0053] If the determination unit 22 determines that there is no vocal input while the modified vocal track is playing (step S22: Yes), the modification unit 23 changes the currently playing vocal track to a background music track (step S23). Then, the performance unit 12 starts playing the modified background music track (step S24), and the flow of this example proceeds to step S5 in Figure 7.

[0054] On the other hand, if the determination unit 22 does not determine that there is no vocal input while the modified song is being played (step S22: No), and the performance unit 12 finishes playing the modified song (step S25: Yes), the flow of this example proceeds to step S3 in Figure 7, and the performance of the next song begins.

[0055] As described above, according to an embodiment of the present invention, a karaoke device 1 having a performance unit 12 that plays songs registered in a reserved song list 15 includes a first registration unit 20 that registers BGM songs in the reserved song list 15 so that there is a predetermined number of BGM songs to be played for background music, a determination unit 22 that determines whether or not there is vocal input from the user when a song is being played by the performance unit 12, and a modification unit 23 that, when the performance unit 12 is playing a BGM song and the determination unit 22 determines that there is vocal input, changes the BGM song being played to a song to be played for singing.

[0056] As a result, with the karaoke device 1 of the present invention, users can smoothly switch from playing background music to playing vocal tracks simply by inputting their singing voice while background music is playing, without having to go through the trouble of operating the remote control device 6 or anything like that.

[0057] Furthermore, in the karaoke device 1 of this embodiment, the determination unit 22 determines that there is input of singing voice if the difference between the reference pitch of the reference data of the song being played by the performance unit 12 and the singing pitch of the input voice is within a predetermined error range and continues for a predetermined period of time.

[0058] As a result, the karaoke device 1 allows users to input singing voices that match the background music, enabling a smooth transition from playing background music to playing a song.

[0059] Furthermore, in the karaoke device 1 of this embodiment, the modification unit 23 changes the currently playing song back to a BGM track when the performance unit 12 is playing a song that has been changed from a BGM track, and the determination unit 22 determines that there is no input of singing voice.

[0060] As a result, if the user does not wish to hear the song being sung, the karaoke device 1 can smoothly switch back from playing the song being sung to playing background music by stopping the input of the singing voice.

[0061] Furthermore, the karaoke device 1 of this embodiment has a second registration unit 21 that registers songs reserved by the user in a reserved song list 15. When a song is being played by the performance unit 12 and a song is reserved by the user, the second registration unit 21 interrupts and registers the reserved song immediately before the first BGM song registered in the reserved song list 15.

[0062] As a result, the karaoke machine 1 can not only receive input of the user's singing voice, but also accept reservations for songs to be sung using the remote control device 6, etc., and register the songs to be sung in the reserved song list 15, prioritizing them over background music.

[0063] Furthermore, in the karaoke device 1 of this embodiment, when a user reserves a song to sing while a background music track is being played by the performance unit 12, the second registration unit 21 inserts the reserved song to the beginning of the reserved song list 15 and stops the performance unit 12 from playing the background music track.

[0064] As a result, the karaoke machine 1 can not only receive input of the user's singing voice, but also accept reservations for songs to be sung using the remote control device 6, etc., and can switch from playing songs to playing background music.

[0065] Furthermore, in the karaoke device 1 of this embodiment, when the changing unit 23 changes the currently playing vocal track to a background music track, if the vocal track is registered at the beginning of the reserved track list 15, it stops playing the changed background music track.

[0066] As a result, when the karaoke device 1 changes the currently playing vocal track back to a background music track, it can prioritize playing the vocal track over the background music track.

[0067] Furthermore, the present invention can be modified as appropriate, as long as it does not contradict the gist or idea of ​​the invention as can be read from the claims and the specification as a whole, and karaoke devices with such modifications are also included in the technical concept of the present invention. [Explanation of Symbols]

[0068] 1. Karaoke machine 2. Karaoke machine 3 Microphone 4 speakers 5 Display device 6. Remote control device 10 Control Unit 11 Storage section 12 Performance Department 13 Audio Input / Output Section 15. Reserved Song List 20. Registration Section 1 21 Second Registration Department 22 Judgment section 23 Changes

Claims

1. In a karaoke machine having a performance section that plays songs registered in a reserved song list, A first registration unit registers the BGM tracks to be played for background music in the reserved track list so that the number of BGM tracks to be played for background music is predetermined, A determination unit determines whether or not there is input of singing voice from the user while the music is being played by the aforementioned performance unit, A karaoke device characterized by having a changing unit that, when the performance unit is playing the background music, determines that there is input of singing voice, changes the background music being played to a song to be played for singing.

2. The karaoke device according to claim 1, characterized in that the determination unit determines that there is input of singing voice when the difference between the reference pitch of the reference data of the song being played by the performance unit and the singing pitch of the input voice is within a predetermined error range and continues for a predetermined period of time.

3. The karaoke apparatus according to claim 1 or 2, characterized in that the modification unit changes the vocal track being played back to the BGM track when the performance unit is playing the vocal track that has been changed from the BGM track and the determination unit determines that there is no input of vocal sound.

4. It has a second registration unit that registers the song reserved by the user into the reserved song list, The karaoke device according to claim 1, characterized in that, when the vocal track is being played by the performance unit and the user reserves the vocal track, the second registration unit registers the reserved vocal track immediately before the first BGM track registered in the reserved track list.

5. The karaoke device according to claim 4, wherein the second registration unit, when the BGM music is being played by the performance unit, registers the reserved vocal music at the beginning of the reserved song list when the user makes a reservation for the vocal music, and causes the performance unit to stop playing the BGM music.

6. The karaoke device according to claim 3, characterized in that when the modification unit changes the vocal track being played to the background music track, if the vocal track is registered at the top of the reserved track list, it stops playing the changed background music track.

Images