JP2019174752A - Karaoke system - Google Patents

Abstract

To provide a karaoke system for recommending a music piece in consideration of a voice range and a back voice range of a singer.SOLUTION: A karaoke system is provided with a sound range specifying part for specifying a voice sound range and a back voice sound range for each music piece, a generating part for generating sound information data in which a harmonic sound rate calculated at a prescribed sampling period, an elapsed time, and a sound pitch are made to correspond to each other, a voice zone specifying part for specifying the voice zone and the back voice zone of a certain singer, an extraction part for comparing the voice zone and the back voice zone specified for the certain singer, and extracting a music piece containing the voice zone within the specified voice zone and the back voice zone within the specified back voice zone, and a presentation part for presenting the extracted music piece as a recommended music piece.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a karaoke system.

  The karaoke device stores tens of thousands of songs. A singer who performs karaoke singing selects a desired piece of music via a remote control device. Specifically, the singer inputs search requirements such as a singer name and a song name on the song search screen displayed on the remote control device, and selects one song that desires karaoke singing from among the songs that match the search conditions. select. The karaoke apparatus registers the music selected by the singer in the reservation queue and performs karaoke performance.

  On the other hand, there may be a case where a singer who has finished singing a karaoke song cannot easily decide a song to be sung next. In order to solve such a problem, in the karaoke system, a technique for recommending (recommending) an appropriate musical piece to a singer has been studied. At this time, if the music in the range (the range of the pitch set in the notes constituting the song) that matches the vocal range of the singer (the range of pitches that the singer can utter) can be recommended, the singer is comfortable Can enjoy karaoke singing and may increase the repertoire.

  For example, in Patent Document 1, musical tone data of a performance song is stored in association with the range of the singing portion of the performance song, a guidance sound for inducing the voice input of the singer is uttered, and the singer's voice is recorded. The singer's vocal range can be analyzed based on whether or not the pitch of the singer matches that of the induced sound, and the singer's own vocal range is taken into account by searching for performances that match the singer's vocal range. In addition, a technique is disclosed that can select a song that is less likely to cause a breakdown in the vocal range during singing.

  Further, in Patent Document 2, a song sung by a singer is recorded in a singing history management table for each singer, and each song of a singer recorded in the singing history management table is recorded with each original song key. Based on the music range, the singer's vocal range is calculated with a predetermined algorithm, the calculated singer's singing range is compared with the singing range of the karaoke piece, and the singing range included in each singer's singing range The technique which can select the music which a singer seems to be able to sing well by selecting the karaoke music provided with is disclosed.

JP-A-9-212185 JP 2008-152169 A

  By the way, when performing karaoke singing, some singers use not only the local voice but also the reverse voice which is a voice in a state reversed from the local voice. However, in the techniques of Patent Document 1 and Patent Document 2, no consideration is given to the use of the back voice. Therefore, when karaoke singing a song selected by the technology, there is a problem that even if it is a part where the singer is singing with the local voice, the pitch is too high for a certain singer, so it must be sung with a back voice. It can happen. In addition, there are singers in which the vocal range of the local voice is separated from the vocal range of the back voice. In such a case, if the techniques of Patent Literature 1 and Patent Literature 2 are used, there is a possibility that the singer cannot present singing karaoke in the first place (music having a range outside the vocal range of the singer).

  The objective of this invention is providing the karaoke system which recommends a music in consideration of a singer's local voice range and a back voice range.

The main invention for achieving the above object is that the pitch of each note that composes a musical piece and the voice of the local voice to be sung based on the background voice flag indicating whether the voice should be sung or not. A range specifying unit that specifies for each piece of music a song and a back voice range to be sung by voice, a harmonic ratio calculated at a predetermined sampling period based on voice data obtained by karaoke singing accompanying karaoke performance of the song, and the karaoke A creation unit that creates voice information data in which the elapsed time from the start of the performance to the time when the harmonic ratio is calculated and the pitch of the voice data at the time when the harmonic ratio is calculated, and a singer's Based on voice information data created in response to karaoke singing, a local voice that indicates the range of pitches that a certain singer can utter with a local voice, and a certain singer uttered with a back voice Based on a voice range specifying unit that specifies a back vocal range that indicates a range of effective pitches, and an instruction input from the certain singer, the back vocal range and the local voice range for each song are specified for the certain singer. An extraction unit that compares a local voice voice range and a back voice range, and extracts a musical piece that includes a local voice range within the specified local voice range and includes a back voice range within the specified back voice range; and It is a karaoke system which has a presentation part which presents the extracted music as recommended music to a singer.
Other characteristics of the present invention will be made clear by the description and drawings described later.

  According to the present invention, music can be recommended in consideration of the singer's local voice and back voice range.

It is a figure which shows the outline of the karaoke system which concerns on embodiment. It is a figure which shows the hardware structural example of the karaoke apparatus which concerns on embodiment. It is a figure which shows the hardware structural example of the server apparatus which concerns on embodiment. It is the figure which showed the number of ON / OFF of the back voice flag in a certain music. It is the figure which showed the local voice range and the back voice range for every singer. It is the figure which showed the relationship between a singer's local voice range and a back voice range, and the local voice range and back voice range of a music. It is a flowchart which shows the process of the karaoke system which concerns on embodiment.

<Embodiment>
With reference to FIGS. 1-7, the karaoke system 1 which concerns on embodiment is demonstrated.

== Karaoke system ==
As shown in FIG. 1, the karaoke system 1 includes a plurality of karaoke devices (karaoke devices K1 to Karaoke devices Kn) and a server device S. Each karaoke apparatus and server apparatus S can communicate with each other via a network N. The network N is a transmission line such as a public telephone line network or an Internet line.

== Karaoke equipment ==
The karaoke apparatus is an apparatus for performing karaoke performance of music and singing by a singer. Below, although karaoke apparatus K1 is demonstrated, another karaoke apparatus is provided with the same structure.

  As shown in FIG. 2, the karaoke device K1 includes a karaoke main body 10, a speaker 20, a display device 30, a microphone 40, and a remote control device 50.

  The speaker 20 is configured to emit sound based on the sound emission signal from the karaoke main body 10. The display device 30 is configured to display a video or an image on the screen based on a signal from the karaoke main body 10. The microphone 40 is configured to convert a singer's singing voice (input voice to the microphone 40) into an analog voice signal and input it to the karaoke main body 10. The remote control device 50 is a device for performing various operations on the karaoke main body 10. The singer can use the remote control device 50 to search for a song for which karaoke singing is desired, select a song (reservation), and the like. Icons or the like for inputting instructions for various operations are displayed on the display screen of the remote control device 50.

  The karaoke main body 10 performs various controls related to karaoke singing, such as karaoke performance control of the selected music, display control of lyrics and background images, and processing of audio signals input through the microphone 40. As shown in FIG. 2, the karaoke main body 10 includes a control unit 11, a communication unit 12, a storage unit 13, an acoustic processing unit 14, a display processing unit 15, and an operation unit 16. Each component is connected to the bus B via an interface (not shown).

  The control unit 11 includes a CPU and a memory (not shown). The CPU implements various control functions by executing operation programs stored in the memory. The memory is a storage device that stores a program to be executed by the CPU and temporarily stores various types of information when the program is executed. In the present embodiment, the control unit 11 functions as the creation unit 100 and the presentation unit 200.

[Creation]
The creation unit 100 creates voice information data. The audio information data is obtained by associating the overtone ratio, the elapsed time, and the pitch.

  In the harmonic ratio, the power of the frequency component is the vertical axis and the frequency is the horizontal axis. In the two-axis coordinate system, the “basic frequency power” is “centering on the peak of the fundamental frequency, and the width is peaked from the beginning of the peak. Defined as the area of the power of the frequency component of the fundamental frequency corresponding to the width of the frequency until the end of, and the "power of the harmonic frequency" is centered on the peak of the frequency 2 to n times the fundamental frequency, When defined as “the total area of the power of the frequency components of the overtone frequency that corresponds to the width of the frequency from the start of the peak to the end of the peak”, the power of the harmonic frequency / the power of the fundamental frequency (Refer to JP 2012-194389 A). That is, it can be said that the overtone ratio is a frequency of a harmonic over a fundamental frequency. Here, the frequency of the lowest frequency component when a signal based on the sound of a certain note is represented by the synthesis of a sine wave is defined as the fundamental frequency. In this case, the pitch component of a note corresponds to the fundamental tone. Further, the overtone is a sound component having a frequency that is an integer multiple of 2 or more with respect to the frequency of the fundamental tone. In the present embodiment, the creation unit 100 calculates a harmonic overtone ratio at a predetermined sampling period based on voice data obtained by karaoke singing accompanied by karaoke performance of music. Accordingly, a plurality of overtone ratios are calculated during the karaoke performance of one music piece. That is, one audio information data includes a plurality of harmonic ratios.

  The elapsed time is the time from the start of karaoke performance to the time when the harmonic ratio is calculated. The pitch associated with the harmonic ratio and the elapsed time is the pitch indicated by the audio data at the time when the harmonic ratio is calculated.

  For example, when performing karaoke singing in the karaoke device K <b> 1, the singer A inputs his / her singer ID and password via the remote control device 50 and logs in to the karaoke system 1. Then, the singer A makes a reservation for karaoke singing of the music X via the remote control device 50. The karaoke apparatus K1 registers the music X in the reservation queue and performs the karaoke performance of the music X according to the order. The singer A performs karaoke singing of the music piece X along with the karaoke performance.

  In this case, the creation unit 100 calculates the harmonic overtone ratio R1 at a predetermined sampling period (for example, 20 ms) based on the voice data obtained by the singer A's karaoke song. Further, the creation unit 100 obtains the elapsed time T1 until the time when the harmonic ratio R1 is calculated and the pitch P1 of the sound data at the time when the harmonic ratio R1 is calculated, and creates the data d1 associated with the harmonic ratio R1. To do. The creation unit 100 calculates a harmonic overtone ratio Rn (n is the number of times of sampling) at a predetermined sampling period until the karaoke singing of the music piece X is completed. Then, the creation unit 100 creates data dn in which the calculated harmonic overtone ratio Rn is associated with the elapsed time Tn and the pitch Pn (n is the number of times of sampling). The creation unit 100 collects the data d1 to dn after the karaoke performance of the music piece X is finished, and creates the voice information data DX when the singer A performs the karaoke song of the music piece X. The creation unit 100 transmits the created voice information data DX to the server device S in association with the singer ID of the singer A.

[Presentation section]
The presentation unit 200 presents the extracted music as a recommended music to a certain singer.

  The recommended music is music that recommends karaoke singing to a certain singer. The recommended music corresponds to the music extracted by the extraction unit 500 of the server device S (details will be described later).

  The recommended music is presented by, for example, displaying the music name and music ID of the recommended music on the display screen of the remote control device 50.

  When there are a plurality of extracted music pieces, the presentation unit 200 may present only some of the music pieces to the singer as recommended music pieces. For example, the presentation unit 200 presents, as a recommended song, a song that has been karaoke sung in the past (or a song that has never been karaoke sung) among a plurality of extracted songs based on the singing history of the singer. May be.

  The communication unit 12 provides an interface for connecting the karaoke main unit 10 to a communication line via a router (not shown).

  The storage unit 13 is a large-capacity storage device that stores various data, and is, for example, a hard disk drive. The memory | storage part 13 memorize | stores the music data delivered from the server apparatus S, and a singer's song history, for example. The music data is distributed regularly (for example, once a week). The singing history is transmitted from the server device S when the singer logs into the karaoke system 1 through the remote control device 50. Note that the music data may not be stored in the storage unit 13 in advance, and may be downloaded from the server device S each time a karaoke performance is performed.

  Based on the control of the control unit 11, the sound processing unit 14 controls karaoke performance for music and processes a singing voice signal input through the microphone 40. The display processing unit 15 performs processing related to various displays in the display device 30 and the remote control device 50 based on the control of the control unit 11. For example, the display processing unit 15 causes the display device 30 to display a video in which lyrics telop and various icons are superimposed on a background video during karaoke performance. Alternatively, the display processing unit 15 displays various icons for operation input on the display screen of the remote control device 50. The operation unit 16 includes a panel switch and a remote control receiving circuit. The operation unit 16 sends operation signals such as a music selection signal and a performance stop signal to the control unit 11 according to the operation of the panel switch of the karaoke device K1 or the remote control device 50 by the singer. Output. The control unit 11 detects an operation signal from the operation unit 16 and executes a corresponding process.

== Server device ==
The server device S is a computer that manages various information related to the karaoke device and processes data transmitted from the karaoke device. FIG. 3 is a diagram illustrating a hardware configuration example of the server apparatus S. The server device S includes a storage unit 60, a communication unit 70, and a control unit 80. Each component is connected to the bus B via an interface (not shown).

[Storage unit]
The storage unit 60 is a large-capacity storage device that stores various data. The memory | storage part 60 memorize | stores the some music (music data) for performing a karaoke performance in each karaoke apparatus. The song data is given a song ID (identification information) for specifying individual songs. The music data includes accompaniment data, reference data, lyrics telop data, background image data, and music attribute information (music name, singer name, lyrics / composer name, genre, etc. information related to the music). Each music has a predetermined key (default key).

  The reference data is data indicating the content of the melody to be sung in the music. The reference data is composed of a plurality of notes. Each note has a predetermined pitch (pitch). In the present embodiment, each note has a back flag. The back voice flag indicates whether or not a certain note should be sung in the back voice. Specifically, when the singer of the music sings a certain note with a local voice, the back voice flag of the certain note is marked “OFF”. On the other hand, when the singer of the music sings another note with a back voice, the back voice flag of the other note is marked “ON”.

  In addition, the memory | storage part 60 memorize | stores each singer's singing log | history voice range and back voice voice range, the local voice sound range and back voice sound range (all are mentioned later) for every music, or each singer's song history.

[Communication Department]
The communication unit 70 provides an interface for connecting the server device S and each karaoke device.

[Control unit]
The control unit 80 performs various controls in the server device S. The control unit 80 includes a CPU and a memory (both not shown). In the present embodiment, the control unit 80 functions as the sound range specifying unit 300, the voice range specifying unit 400, and the extraction unit 500.

(Sound range identification part)
The range specifying unit 300 sings with the local voice range and the back voice to be sung with the local voice based on the pitch of each note constituting the musical piece and the back voice flag attached to each note indicating whether or not to sing with the back voice. The back voice range to be specified is specified for each song.

  The “geophone range” is a range of pitches that the singer who sings the song sings with the geophony. The “back voice range” is a range of pitches that the singer who sings the music sings in the back voice.

  Each time a new musical piece is added to the storage unit 60, the musical range identification unit 300 identifies the local voice range and the back voice range of the musical piece.

  Specifically, the range specifying unit 300 refers to the reference data of the new music, and the pitches of all the notes whose back voice flag is “OFF” and all the notes whose back voice flag is “ON”. Each pitch is extracted. FIG. 4 shows the number of flags for each pitch of the music specified by the music ID “1234-56”. For example, for the note with pitch “C5”, the back voice flag “ON” is “15” and “OFF” is “22”.

  The range specifying unit 300 specifies the range from the lowest pitch to the highest pitch as the local voice range of the music for the pitch whose extracted back voice flag is “OFF”. In the example of FIG. 4, the sound range specifying unit 300 specifies the range of the pitch “B3” to the pitch “D5” as the local voice range of the music specified by the music ID “1234-56”.

  In addition, the range specifying unit 300 specifies a range from the lowest pitch to the highest pitch as the back tone range of the music for the pitch whose extracted back tone flag is “ON”. In the example of FIG. 4, the pitch range specifying unit 300 specifies the range of the pitch “B4” to the pitch “G5” as the back voice range of the song specified by the song ID “1234-56”. In addition to the music in which the local voice range and the back voice range partially overlap as in the example of FIG. 4, there are music pieces in which the local voice range and the back voice range do not overlap.

  The range specifying unit 300 stores the specified local voice range and back tone range in the storage unit 60 in association with the music ID.

(Voice identification part)
The vocal range identifying unit 400 identifies the local voice range and the back vocal range of a certain singer based on the voice information data created according to the karaoke song of a certain singer.

  The “earth voice range” indicates the range of pitches that a certain singer can utter in the local voice, and is the range from the lowest pitch to the highest pitch in the singing voice of a singer. . The “back voice range” indicates a range of pitches that a certain singer can utter in the back voice, and is a range from the lowest pitch to the highest pitch in the back voice of a certain singer. Note that the technology described in Japanese Patent Application Laid-Open No. 2012-194389 can be used for specifying the local voice voice area and the back voice voice area.

  For example, it is assumed that the voice information data DX and the singer ID of the singer A are transmitted from the creation unit 100 of the karaoke apparatus K1. In this case, the voice range identification unit 400 uses the pitch distribution of each data dn included in the voice information data DX with respect to the voice distribution table which is a table of a two-axis coordinate system in which the vertical axis represents the overtone ratio and the horizontal axis represents the pitch. And plot the points specified by the harmonic ratio. The vocal range specifying unit 400 determines a region in the set of plotted points that is distributed from a relatively low to medium pitch with respect to the pitch and uniformly distributed from a low to a high overtone ratio. Specify the area corresponding to the voice. On the other hand, the vocal range specifying unit 400 corresponds to a region where the pitch is distributed from medium to relatively high with respect to the pitch and low to medium with respect to the overtone ratio. Identified as an area to perform.

Then, the vocal range specifying unit 400 sets the lowest pitch Pv _low that the singer A can sing in the local voice in the region corresponding to the specified local voice, and the highest rightmost sound. The highest pitch Pv _high that the singer A can sing with the local voice is defined as _high, and the range from the pitch Pv _high to the pitch Pv _low is specified as the singer A's local voice range. In addition, in the region corresponding to the specified back voice, the vocal range specifying unit 400 sets the pitch located at the leftmost end as the lowest pitch Pf _low that the singer A can sing in the back voice, and the pitch located at the rightmost end. The highest pitch Pf _high that the singer A can sing in the back voice is set, and a range from the pitch Pf _high to the pitch Pf _low is specified as the back voice range of the singer A.

The vocal range identifying unit 400 stores the identified local voice range and back vocal range in association with the singer ID of the singer A in the storage unit 60. FIG. 5 shows an example of the local voice range and the back voice range of each singer stored in the storage unit 60. In FIG. 5, for example, the lowest pitch Pv _low that the singer A can sing with the local voice is “B3”, and the highest pitch Pv _high that the singer A can sing with the local voice is “A # 4”. The lowest pitch Pf _low that the singer A can sing in the back voice is “C5”, and the highest pitch P f _high that the singer A can sing in the back voice is “F5”.

  Note that the vocal range specifying unit 400 can specify the local voice range and the back voice range based on a plurality of pieces of voice information data created in response to a singing of a singing person multiple times.

  For example, in the above example, when there is a plurality of voice information data of the singer A, the creation unit 100 of the karaoke apparatus K1 transmits all the voice information data in association with the singer ID of the singer A. In this case, the vocal range specifying unit 400 plots the points specified by the pitch and the harmonic ratio of each data dn included in all the audio information data with respect to the above-described audio distribution table. Thereafter, the vocal range identifying unit 400 identifies the local voice range and the back vocal range of the singer A by performing the same process as described above.

(Extractor)
Based on an instruction input from a certain singer, the extraction unit 500 compares the back voice range and the local voice range for each song with the local voice range and the back voice range specified for a song person, A musical piece that includes the local voice range within the voice range and includes the back voice range within the identified back voice range is extracted.

  For example, suppose that a singer A who has already specified his / her local voice range and back voice range desires a recommendation of a musical piece suitable for his / her voice range (voice range-adapted musical piece recommendation) when using the karaoke apparatus K1.

  In this case, the singer A inputs his / her singer ID or the like via the remote controller 50 and logs into the karaoke system 1. Thereafter, the singer A selects an icon displayed on the screen of the remote control device 50 and instructs the start of the vocal range adaptation recommendation.

  Based on the singer ID of the singer A, the extraction unit 500 reads the data of the singer A's local voice and back voice from the storage unit 60. Here, it is assumed that the singing voice range of the singer A is in the range of pitches B3 to A # 4, and the back voice range is in the range of pitches C5 to F5 (see FIG. 5).

  The extraction unit 500 compares the singer A's local voice and back voice range with the local voice and back voice range of each song stored in the storage unit 60. Then, the extraction unit 500 extracts music that meets a predetermined condition. The predetermined condition is that a local voice range is included in the specified local voice range, and a back voice range is included in the specified back voice range.

  FIG. 6 is a diagram showing a relationship between the singing voice A and the vocal utterance range of the singer A, and the geophonic and audible vocal ranges of the music pieces M1 to M3.

  In FIG. 6, the local voice range (range of pitches C4 to A4) of the music M1 is included in the local voice range (range of pitches B3 to A # 4) of the singer A and the back voice range of the music M1 (range of pitches B3 to A # 4). The range of the pitch C # 5 to E5) is included in the back vocal range of the singer A (the range of the pitch C5 to F5). Therefore, the extraction unit 500h and the music M1 are extracted as music that meets a predetermined condition.

  On the other hand, there are music pieces having a local voice range and a back voice range that are out of the real voice range and the back voice region of the singer A, such as the music M2 and the music M3. Since such music does not meet the predetermined condition, the extraction unit 500 does not extract music.

  The extraction unit 500 transmits the music ID of the extracted music M1 to the karaoke apparatus K1 used by the singer A. The presentation unit 200 of the karaoke apparatus K1 displays the music M1 extracted on the screen of the remote controller 50 as a recommended music based on the received music ID.

  Note that the extraction unit 500 can also compare the keys of the music by shifting the keys of the music so that the local voice sound range and the back voice range for each music piece are close to the specified local voice voice range and the back voice range. In this case, the extraction unit 500 associates information regarding the shifted key with respect to the extracted music and transmits it to the karaoke apparatus. The presentation unit 200 can also present a recommended key for karaoke singing based on information on the key shift amount (shift amount from the default key) when the recommended music is presented.

== About processing in karaoke system ==
Next, a specific example of processing in the karaoke system 1 according to the present embodiment will be described with reference to FIG. FIG. 7 is a flowchart showing a processing example in the karaoke system 1. In this example, it is assumed that the local voice range and the back voice range specified for each piece of music are stored in the storage unit 60 of the server device S.

  The karaoke apparatus K1 performs a karaoke performance of the song X reserved by the singer A (karaoke performance, step 10). The singer A performs karaoke singing of the music piece X along with the karaoke performance.

  The creation unit 100 of the karaoke apparatus K1 calculates a harmonic overtone ratio calculated at a predetermined sampling period based on voice data obtained by karaoke singing of the music piece X, and from the start of the karaoke performance of the music piece X to the time point when the harmonic overtone ratio is calculated. Audio information data is created by associating the elapsed time with the pitch of the audio data at the time when the harmonic ratio is calculated (creation of audio information data, step 11). The creation unit 100 transmits the voice information data created in step 11 to the server device S (send of voice information data; step 12).

  Based on the audio information data created in step 11, the vocal range specifying unit 400 of the server device S includes a local voice range indicating a range of pitches that the singer A can utter with a local voice, and the singer A with a back voice. The back voice range indicating the range of pitches that can be uttered is specified (identification of the local voice range and the back voice range, step 13).

  Here, it is assumed that the singer A gives an instruction to start a voice range adaptation recommendation via the remote control device 50 (recommendation instruction input, step 14).

  The extraction unit 500 of the server device S compares and identifies the back voice range and the local voice range for each piece of music stored in the storage unit 60 with the local voice and the back voice range of the singer A specified in step 13. A musical piece that includes the local voice range within the specified local voice range and that includes the back voice range within the specified back voice range is extracted (extraction of music, step 15). The extraction unit 500 transmits the music ID of the extracted music to the karaoke apparatus K1 (transmits the music ID of the extracted music. Step 16).

  The presentation unit 200 of the karaoke apparatus K1 presents the song extracted in step 15 to the singer A as the recommended song based on the song ID transmitted in step 16 (presentation of recommended song. Step 17).

  As described above, the karaoke system 1 according to the present embodiment sings with the local voice based on the pitch of each note constituting the musical piece and the back voice flag attached to each note indicating whether or not to sing with the back voice. Overtone ratio calculated at a predetermined sampling period based on sound range obtained by singing a karaoke singing accompanied by a singing karaoke performance associated with a singing karaoke performance of a musical piece, and a sound range specifying unit 300 that specifies for each piece of music And a creation unit 100 that creates voice information data that associates the elapsed time from the start of the karaoke performance to the time when the harmonic ratio is calculated with the pitch of the voice data at the time when the harmonic ratio is calculated; Based on voice information data created in response to a singing karaoke song of a certain singer, There is a vocal range identification unit 400 that identifies a range of pitches that indicates the range of pitches that a certain singer can utter in the back, and a back range and a local range for each song based on an instruction input from a certain singer. Extraction that compares the local voice range and the back voice range specified for the singer, and extracts music that includes the local voice range within the specified local voice range and includes the back voice range within the specified back voice range Unit 500 and presenting unit 200 that presents the extracted music as a recommended music to a certain singer.

  The specified local voice voice range and the back voice range correspond to a pitch range in which the singer can utter the local voice and the back voice without difficulty. Therefore, for songs where the local voice range is included in the local voice range and the reverse voice range is included in the background voice range, the singer can sing in the local voice at the location where the singer sings in the local voice. The singer can sing in the back voice about the part to sing. By presenting such music as recommended music, the singer can grasp music that can be comfortably sung in karaoke. That is, according to the karaoke system 1 according to the present embodiment, music can be recommended in consideration of the singer's local voice range and back voice range.

  Further, the extraction unit 500 can shift and compare the music key so that the local voice range and the back voice range for each piece of music are close to the specified local voice range and the back voice range. By performing the comparison by shifting the keys in this way, it is possible to extract music that is closer to the singer's local voice and back voice.

  Moreover, the vocal range specifying unit 400 can specify the local voice range and the back voice range based on a plurality of pieces of voice information data created according to a plurality of karaoke singings of a certain singer. Not all pitches are included in one piece of music. Therefore, the local voice range and the back voice range specified based on the karaoke singing of one piece of music do not necessarily accurately indicate the range of pitches that the singer can sing. On the other hand, by using a plurality of audio information data, it is possible to more accurately specify the singer's original local voice range and back voice range.

<Others>
The various configurations described in the above embodiment may be provided alone. That is, the karaoke apparatus may include not only the creating unit 100 and the presentation unit 200 but also the sound range specifying unit 300, the vocal range specifying unit 400, and the extracting unit 500. In this case, the karaoke apparatus corresponds to a “karaoke system”.

  For example, each time a new song is distributed, the server device S transmits the song data of the song to the karaoke device K1. The sound range specifying unit 300 specifies the local voice range and the back tone range for the music and stores them in the storage unit 13. Further, the vocal range identifying unit 400 identifies the vocal voice range and the back vocal range of the singer based on the voice information data created by the creation unit 100.

  Here, it is assumed that a certain singer selects an icon displayed on the screen of the remote control device 50 and gives an instruction to start a voice range recommendation.

  The extraction unit 500 compares the back voice range and the local voice range for each music stored in the storage unit 13 with the specified vocal voice range and the back voice range of a certain singer, and within the specified local voice range. A musical composition that includes a local voice range and that includes a back voice range within the specified back voice range is extracted. The extraction unit 500 outputs the music ID of the extracted music to the presentation unit 200. The presentation unit 200 presents the recommended music to the singer based on the output music ID.

  The above embodiment is presented as an example and does not limit the scope of the invention. The above configurations can be implemented in appropriate combination, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The above-described embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof in the same manner as included in the scope and spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Karaoke system 100 Creation part 200 Presentation part 300 Sound range specification part 400 Voice range specification part 500 Extraction part K1-Kn Karaoke apparatus S Server apparatus

Claims (3)

Based on the pitch of each note that composes the song and a back voice flag that indicates whether or not to sing in the back voice, attached to each note, a local voice range that should be sung in the local voice and a back voice range that should be sung in the back voice A range identifying unit that identifies each song;
Based on the audio data obtained by karaoke singing with the karaoke performance of the song, the harmonic ratio calculated at a predetermined sampling period, the elapsed time from the start of the karaoke performance to the time when the harmonic ratio was calculated, and the harmonic ratio A creation unit that creates voice information data in association with the pitch of the voice data at the time of calculation;
Based on voice information data created according to a singing karaoke song of a singer, a local voice range indicating the range of pitches that the singing singer can utter, and a certain singer can utter A vocal range identifying unit that identifies a back vocal range that indicates a range of various pitches;
Based on the instruction input from the certain singer, the back voice range and the local voice range for each piece of music are compared with the local voice range and the back voice range specified for the certain singer, and within the specified local voice range An extraction unit that extracts a musical piece that includes a local voice range and includes a back voice range within the specified back voice range;
A presenting unit that presents the extracted music as recommended music to the certain singer,
Karaoke system with   The said extraction part shifts and compares the key of the said music so that the local voice range and the back voice range for every said music may become close to the specified local voice range and the back voice range, The comparison is characterized by the above-mentioned. Karaoke system.   The voice range specifying unit specifies the local voice range and the back voice range based on a plurality of the voice information data created in response to a plurality of karaoke singings of the certain singer. The karaoke system according to 1 or 2.

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