JP2009104097A - Scoring device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology capable of performing fair scoring, when singing (or performance) is scored. <P>SOLUTION: Singing voice of a singer is collected by a microphone 15, and converted to an audio signal. A control section 11 of a Karaoke device 1 detects a pitch from the audio signal, and generates a singing pitch data SP. The control section 11 compares the singing pitch data SP with a reference pitch data RP, and scores singing according to difference of both. At this time, the control section 11 corrects a score result according to tempo control information so that scoring standard may become severe, as the tempo gets slower, when the singer changes the tempo of a music piece by using an operation section 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for evaluating singing (or performance).

In a karaoke apparatus, various methods for scoring the skill of a singer's singing have been proposed. For example, in Patent Document 1, when comparing the singing and the reference that is a model, if the timing of the singing and the timing of the reference are shifted, the singing voice data and the reference data are shifted in the time axis direction to cross-correlate. And a method of scoring each note at the position with the highest cross-correlation has been proposed.
JP 2005-107330 A

By the way, when singing a song with a fast tempo, the time length of each note is short, so it is often more difficult to match the pitch than a song with a slow tempo. Therefore, if the music is played slowly by operating the tempo control, the time length of each note becomes longer and it becomes easier to adjust the pitch. Therefore, when singing at a slower tempo, the score is often higher than when singing at a faster tempo. There was a case. Even when different songs are sung, songs with a slower tempo are easier to sing and have a higher score than songs with a faster tempo, and therefore, the grading result may be unfair depending on the song. The same applies to the performance of musical instruments.
The present invention has been made under the above-described background, and an object of the present invention is to provide a technique capable of performing a more fair scoring in the singing (or performance) scoring than in the past.

  In order to solve the above-described problems, a scoring apparatus according to a preferred aspect of the present invention includes a storage unit that stores reference data representing a sound serving as a model of music, and a reading unit that reads the reference data stored in the storage unit. The acquisition means for acquiring tempo information representing the tempo of the music, the audio signal supplied from the sound collection means and the reference data read by the reading means are compared, and scoring is performed according to the difference between the two. Scoring means, scoring means for scoring so that the scoring criteria become stricter as the tempo indicated by the tempo information acquired by the acquisition means becomes slower; and output means for outputting data indicating the scoring result by the scoring means; It is characterized by comprising.

  Further, the scoring device according to a preferred aspect of the present invention includes a storage unit that stores reference data that represents a sound as an example of a music in a string of notes, a reading unit that reads the reference data stored in the storage unit, An audio signal supplied from a sound collection means and reference data read by the reading means are compared for each note, and scoring means for scoring for each note according to the difference between the two, It comprises scoring means for scoring each note so that the scoring standard becomes stricter as the note length is longer, and output means for outputting data indicating the scoring result of the scoring means.

  In the above-described aspect, the storage means stores reference data that represents a model sound of the music in a string of notes, and the scoring means reads the audio signal supplied from the sound collection means and the reading means. A scoring unit that compares the extracted reference data for each note and performs scoring according to the difference between the notes, and the tempo indicated by the tempo information acquired by the acquiring unit is slower, so that the scoring standard becomes stricter At the same time, scoring may be performed for each note so that the longer the note length of the note, the stricter the scoring criteria.

In the above-described aspect, the storage unit stores reference data representing a sound serving as an example of the music and tempo information representing the tempo of the music in association with each other, and the acquisition unit reads by the reading unit. Tempo information corresponding to the output reference data may be read from the storage means.
In the above-described aspect, the acquisition unit may acquire the tempo information according to an operation signal output from an operation unit operated by a user.

  In the above aspect, the scoring means compares the audio signal and the reference data for each note, performs scoring for each note according to the difference between the two, and gives a scoring result for each note. Total scoring may be performed.

  According to the present invention, in singing (or performance) scoring, it is possible to perform scoring more equitably than in the past.

<A: Configuration>
FIG. 1 is a block diagram showing a hardware configuration of a karaoke apparatus 1 according to an embodiment of the present invention. In the figure, the control unit 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), and reads and executes a computer program stored in the ROM or the storage unit 12. Thus, each part of the karaoke apparatus 1 is controlled via the bus BUS. The storage unit 12 is a storage unit for storing a computer program executed by the control unit 11 and data used at the time of execution, and is, for example, a hard disk device. The display unit 13 includes a liquid crystal panel and displays various images under the control of the control unit 11. The operation unit 14 is an operation unit that is operated by the user of the karaoke apparatus 1, and outputs a signal corresponding to the content operated by the user of the karaoke apparatus 1 to the control unit 11. The singer can change the tempo of the music by operating the operation unit 14. The control unit 11 acquires tempo control information indicating the tempo change content in accordance with the operation signal output from the operation unit 14, and changes the tempo of the music based on the acquired tempo control information.

  The microphone 15 is a sound collecting unit that collects sound and outputs an audio signal (analog signal) representing the collected sound. The audio processing unit 16 converts an audio signal (analog signal) output from the microphone 15 into digital data. The audio processing unit 16 converts the digital data into an analog signal and outputs the analog signal to the speaker 17. The speaker 17 is a sound emitting unit that emits sound with an intensity corresponding to an audio signal that is converted from digital data to an analog signal and output by the sound processing unit 16.

In this embodiment, the case where the microphone 15 and the speaker 17 are included in the karaoke apparatus 1 will be described. However, the audio processing unit 16 is provided with an input terminal and an output terminal, and the input terminal is connected to the input terminal via an audio cable. An external microphone may be connected, and similarly, an external speaker may be connected to the output terminal via an audio cable. In this embodiment, the audio signal input from the microphone 15 to the audio processing unit 16 and the audio signal output from the audio processing unit 16 to the speaker 17 are analog audio signals. You may make it input / output. In such a case, the audio processing unit 16 does not need to perform A / D conversion or D / A conversion. The same applies to the display unit 13, and an external output terminal may be provided to connect an external monitor.

  As shown in FIG. 1, the storage unit 12 of the karaoke apparatus 1 includes a music data storage area 121 and a background image data storage area 122. The music data storage area 121 stores music data representing accompaniment sounds and lyrics of music. The background image data storage area 122 stores background image data representing a moving image displayed as a background at the time of karaoke accompaniment.

Here, an example of the contents of the music data stored in the music data storage area 121 will be described. As shown in FIG. 2, the music data has a header and a plurality of tracks. Reference data in which reference data representing the content of a melody (pitch) to be sung by the user is described in the plurality of tracks. There are a data track, a performance track describing performance data representing the contents of karaoke performance sounds, and a lyrics track describing lyrics data representing the contents of lyrics. In the header portion, as shown in FIG. 2, song number data for specifying a song, song name data showing the song title, genre data showing the genre, performance time data showing the performance time of the song, and the default tempo of the song Tempo data (hereinafter referred to as “music tempo information”) and the like. The above music data is described according to the MIDI format.
In the following description, for convenience of explanation, when there is no need to distinguish between “tempo control information” and “music tempo information”, these will be referred to as “tempo information”.

  Next, a specific example of reference data described in the reference data track will be described with reference to FIG. Reference data is data that represents an exemplary sound in a row of notes. Since FIG. 3 is a matrix of rows and columns, first the columns will be described. The delta time in the first column indicates the time interval between events, and is represented by the number of tempo clocks. When the delta time is “0”, it is executed simultaneously with the immediately preceding event. In the second column, the contents of messages of each event of the performance data are described. This message includes a control change message in addition to a note-on message (NoteOn) indicating a sounding event and a note-off message (NoteOff) indicating a mute event. In the example shown in FIG. 3, the control change message is not included.

The third column describes channel numbers. Here, for simplicity of explanation, the channel number of the reference data track is “1”.
In the fourth column, a note number (NoteNum) or a control number (CtrlNum) is described. Which is described depends on the content of the message. For example, in the case of a note-on message or a note-off message, a note number indicating a musical scale is described here, and in the case of a control change message, a control number indicating its type is described.
The fifth column describes specific values (data) of the MIDI message. For example, in the case of a note-on message, the velocity value indicating the sound intensity is described here, and in the case of a note-off message, the velocity value indicating the speed at which the sound is turned off is described. If there is, the value of the parameter corresponding to the control number is described.

Next, each row shown in FIG. 3 is a musical sound parameter indicating the attribute of each note of the melody to be sung, and is composed of a note-on event and a note-off event.
In the example shown in FIG. 3, the length of the delta time 480 is the length of a quarter note. In this case, it is indicated that the C4 sound is generated over the length of the quarter note by the event processing of the first row and the second row, and the G4 sound is changed to the quarter note by the event processing of the third row and the fourth row. It is shown to be pronounced over length. Then, it is shown that the F4 sound is pronounced over the length of the half note by the processing of the fifth and sixth lines.

  When the user performs a song designation operation, the designated song data is read from the song data storage area 121 based on the song number data and transferred to the RAM. The controller 11 sequentially reads and processes the music data in the RAM, so that the music performance progresses. At this time, the reference data is also read out in synchronization with the progress of the music, and the control unit 11 generates reference pitch data RP according to the note and velocity of the reference data.

  On the other hand, the voice of the singer input to the microphone 15 becomes a singing voice signal, which is output from the speaker 17 via an amplifier (not shown) and also input to the voice processing unit 16. After the voice processing unit 16 performs A / D conversion on the singing voice signal S1, the control unit 11 extracts the pitch of the singing voice and outputs it as the singing pitch data SP. In this case, the process of extracting the pitch of the singing voice is performed approximately every 11.6 ms.

<B: Operation>
FIG. 4 is a diagram illustrating a flow of processing performed by the control unit 11 of the karaoke apparatus 1. The operation of this embodiment will be described below with reference to FIG. In FIG. 4, the accompaniment playback unit 111, the display control unit 112, the pitch detection unit 113, and the scoring unit 114 are realized by the control unit 11 reading out and executing a computer program stored in the ROM or the storage unit 12. The The arrows in the figure schematically show the flow of data.

  When the user performs a music designation operation using the operation unit 14, the music data of the designated music is transferred from the music data storage area 121 to the RAM. The accompaniment playback unit 111 performs karaoke accompaniment by sequentially reading out the music data events in the RAM, and the display control unit 112 executes lyrics display processing by sequentially reading out the lyrics data of the music data in the RAM. Specifically, the accompaniment reproducing unit 111 outputs event data described in the performance track of the music data to the sound processing unit 16. The display control unit 112 outputs the lyrics data of the lyrics track to the display unit 13. As a result, the karaoke accompaniment sound is output from the speaker 17, while the lyrics represented by the lyrics data are displayed on the display unit 13.

  The singer sings along with the accompaniment sound emitted from the speaker 17. The singing voice of the singer is converted into an audio signal by the microphone 15 and A / D converted by the voice processing unit 16. The pitch detection unit 113 extracts the pitch from the audio data A / D converted by the audio processing unit 16 (hereinafter referred to as “singing audio data”), and outputs it as the singing pitch data SP. The singing pitch data SP generated by the pitch detection unit 113 is output to the scoring unit 114.

  Next, the scoring process performed by the scoring unit 114 will be described with reference to the flowchart shown in FIG. First, the scoring unit 114 compares the reference pitch data RP and the singing pitch data SP in units of notes, and performs scoring for each note according to the difference between the two (step S1). At this time, the scoring unit 114 performs scoring according to the note length (relative sound duration). More specifically, the scoring unit 114 performs scoring for each note so that the scoring standard becomes stricter as the note length is longer for each note included in the reference data.

  Here, a specific example of the scoring process performed by the scoring unit 114 will be described with reference to FIG. 6A and 6B are diagrams for explaining the content of scoring processing in units of notes. 6 (a) and 6 (b), the horizontal axis represents the difference between the average singing pitch within one note and the reference pitch (hereinafter referred to as “DC parameter value”), and the vertical axis represents the singing within one note. The average of the difference between the average pitch and the singing pitch (hereinafter referred to as “AC parameter value”) is shown. The scoring unit 114 calculates an AC parameter value and a DC parameter value for each note included in the reference data from the reference pitch data RP and the singing pitch data SP corresponding to each note. Next, the scoring unit 114 determines for each note whether or not the relationship between the AC parameter value and the DC parameter value is included in the region P of FIG. When the relationship between the DC parameter value and the AC parameter value is included in the region P in FIG. 6, the scoring unit 114 deducts points for the note. On the other hand, when the relationship between the DC parameter value and the AC parameter value is not included in the region P in FIG. 6, the scoring unit 114 adds points to the note.

  At this time, the scoring unit 114 performs different determination processes according to the sound length of each note (relative sound time length). Specifically, the scoring unit 114 determines whether or not the sound length of the note is longer than a predetermined threshold value. For notes whose sound length is shorter than the threshold value, the graph shown in FIG. On the other hand, for notes whose sound length is longer than the threshold, the determination is made using the graph shown in FIG. The graph shown in FIG. 6A and the graph shown in FIG. 6B have different DC parameter value threshold values for determining whether or not they are included in the region P as shown in FIG. The range of the region P is wider in the graph used for the determination (the graph shown in FIG. 6B).

  6 (a) and 6 (b), “45” and “35” are shown as the threshold values of the DC parameter value, respectively. However, the scoring unit 114 depends on the note length as shown in FIG. The determination is performed using different threshold values. FIG. 7 is a diagram showing the relationship between the note length and the threshold value of the DC parameter value. In the figure, the horizontal axis indicates the note length, and the vertical axis indicates the difference value from the reference value of the DC parameter value threshold (hereinafter simply referred to as “reference value”). As shown in the figure, the design is such that the difference between the DC parameter value and the reference value increases as the note length of the note increases. That is, the longer the note length, the larger the area P (the area where points are deducted) and the stricter the scoring criteria. In this manner, the scoring unit 114 increases the area P for determining whether or not to add a score as the note length of the note increases, thereby severely scoring as the note length of the note increases.

  In addition, when scoring a note, the scoring unit 114 performs weighting for each note so that the scoring standard becomes stricter as the time length of the note becomes longer as shown in FIG. FIG. 8 is a diagram illustrating a correspondence relationship between the note length (msec) and the weighting coefficient. In FIG. 8, the horizontal axis indicates the length of the note, and the vertical axis indicates the value of the weighting coefficient. As shown in the figure, the value of the weighting coefficient increases as the note length increases. The scoring unit 114 refers to the relationship shown in FIG. 8 when weighting a note and weights the note for each note. In other words, the scoring unit 114 performs the deduction by increasing the deduction degree (deduction rate or deduction amount) as the length of the note is longer.

  Returning to the description of FIG. When scoring in units of notes is completed, the scoring unit 114 determines whether or not the music has ended (step S2). When it is determined that the music has ended (step S2; YES), the scoring process is performed. On the other hand, if the music is not finished (step S2; NO), the scoring process for the next note is continued (step S1).

  If it is determined that the music has ended (step S2; YES), the scoring unit 114 totals the scoring results for each note and performs overall scoring (step S3). Next, the scoring unit 114 corrects the scoring result according to the tempo control information so that the singer changes the tempo of the music by the operation unit 14 so that the scoring standard becomes stricter as the tempo is slowed down. (Step S4). The content of the tempo control information is reflected in the scoring result by the process of step S4. Specifically, the scoring unit 114 stores tempo control information corresponding to the signal output from the operation unit 14 in a predetermined storage area of the storage unit 12 in time series while the music is being played. Next, the control unit 11 refers to the time-series tempo control information stored in the storage area, calculates an average value of the tempo control information in the entire music, and calculates a deduction point rate according to the calculated average value. Next, the scoring unit 114 reflects the content of the tempo control information in the scoring result using the calculated point deduction rate.

Here, an example of specific contents of the process shown in step S4 will be described. The scoring unit 114 first calculates an average value of tempo control information in the entire music (hereinafter, “average tempo control information Ave”) using tempo control information input by the user of the karaoke apparatus 1 operating the operation unit 14. . Specifically, the scoring unit 114 calculates the average tempo control information Ave by the following equation (1) using the tempo control information tci of one sample, the one sample time Δt, and the music performance time T.

Next, the scoring unit 114 calculates a deduction point per for the music score from the calculated average tempo control information Ave. Specifically, the scoring unit 114 calculates a point deduction rate per using the relationship shown in FIG. FIG. 9 is a diagram illustrating a correspondence relationship between the average tempo control information Ave and the point deduction rate per. In the figure, the horizontal axis shows the value of the average tempo control information Ave, and the vertical axis shows the deduction point per. In the figure, for example, when the value of the average tempo control information Ave is “7”, the scoring unit 114 refers to this graph and determines the point deduction rate per as “+10” (%). The scoring unit 114 reflects the content of the tempo control information in the scoring result using the determined deduction point per. Specifically, the scoring unit 114 corrects the scoring result tp by the following formula (2) using the calculated deduction point per.
tp = tp * (100 + per) / 100 (2)
Through the above processing, the content of the tempo control information is reflected in the scoring result.

Returning to the description of FIG. When the processing of step S4 is completed, the scoring unit 114 then refers to the music tempo information described in the header of the music data, so that the scoring standard becomes stricter as the tempo indicated by the music tempo information is slower. The result is further corrected (step S5). This process is a process that takes into account that the slower the tempo of a music, the easier it is to adjust the pitch. First, the scoring unit 114 refers to the music tempo information described in the header of the music data, and calculates the average value avk of the music tempo information in one note for each of the notes. When the tempo is always constant throughout the music, the music tempo information may be used as it is as the average value avk. Next, the scoring unit 114 calculates the difficulty xk of each note in the music by using the time length ntk of each note and the average value avk of the music tempo information in one note according to the equation (3). Note that “280” in equation (3) is the fastest tempo of MIDI.
xk = ntk * (280−avk) (3)

Next, the scoring unit 114 adds up the calculated difficulty levels xk for each note to calculate the difficulty level of the entire music. More specifically, the scoring unit 114 calculates the difficulty tx of the entire music by the following equation (4) using the difficulty xx for each note and the total number N of notes included in the music.

Next, the scoring unit 114 calculates a point deduction rate p with reference to the graph shown in FIG. FIG. 10 is a diagram illustrating a correspondence relationship between the difficulty tx and the deduction point p. In the figure, the horizontal axis indicates the difficulty tx, and the vertical axis indicates the deduction point p. Next, the scoring unit 114 reflects the difficulty level of the music in the scoring result using the determined deduction point p. Specifically, the scoring unit 114 corrects the scoring result tp by the following equation (5) using the calculated deduction point p.
tp = tp * (100 + p) / 100 (5)
As shown in FIG. 10, the tempo of the music can be reflected in the scoring result by increasing the deduction rate as the difficulty of the music is lower.

  In this way, the scoring unit 114 performs scoring so that the scoring criteria become stricter for music with a slow musical tone (step S5 in FIG. 5). Similarly, the scoring unit 114 performs scoring so that the scoring result is low even for a song that has been slowed down by the singer changing the tempo using the operation unit 14 (step S4 in FIG. 5). ).

  Returning to the description of FIG. The scoring unit 114 outputs data indicating the scoring result to the display control unit 112 (step S6). The display control unit 112 causes the display unit 13 to display an image indicating the scoring result based on the data supplied from the scoring unit 114. The singer can check the scoring result of his / her song by referring to the screen displayed on the display unit 13.

  By the way, when performing singing using a karaoke apparatus, if a tempo control is operated and music is reproduced slowly, each note will become long and it will become easy to adjust a pitch. Therefore, with a conventional device, when a song is played slowly, a high score can be obtained even for a song that is not originally a high score. On the other hand, in this embodiment, tempo control information at the time of music performance is always recorded, a deduction rate is determined from a value obtained by averaging over time, and a value for controlling the speed of music by deducting from the original score ( Tempo control information) is reflected in the scoring results. In this way, by reflecting the tempo control information in the scoring result, it is possible to adjust the degree of singing difficulty by the music or the user operation (tempo control) and perform fair scoring.

  In addition, although the difficulty level for obtaining a high score varies depending on the speed of the music, in this embodiment, the music tempo is slowed by measuring and adjusting the difficulty level specific to each music using the music tempo information. The grading criteria will be tightened. By doing in this way, compared with the past, the precision of the difficulty adjustment between each music can be improved, and the unfair feeling with respect to scoring of a selection music can be reduced. As a result, it is possible to score fairly as compared with the prior art, and for example, it is possible to operate a ranking game that is not tied to music.

  Also, in this embodiment, the longer the note length of the note, the stricter the scoring criteria, so this can reduce the difference between the sense that the human heard the song and the score, and the pitch is longer for a longer note. It is possible to score according to the listener's sensation in the case of deviation.

<C: Modification>
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. An example is shown below. In addition, you may combine each following aspect suitably.
(1) In the above-described embodiment, the tempo control information indicating the tempo change content is reflected in the overall score and the pitch determination. The scoring mode in which tempo control information is reflected is not limited to this, and may be reflected in other various scoring items. For example, when scoring is performed according to the skill of the singing technique such as vibrato, shackle, fist and the number of times of use, the contents of the tempo control information may be reflected in this scoring item.

  Moreover, in the above-mentioned embodiment, the scoring result was made low with respect to the music whose music tone is slow. Similarly, the scoring result may be increased for music with a fast tune.

  In the above-described embodiment, the tempo control information corresponding to the operation signal output from the operation unit 14 or the music tempo data described in the header of the music data is used as tempo information representing the tempo, and the control unit 11 The tempo information is acquired from the operation unit 14 or the music data storage area 121. The manner in which the control unit 11 acquires the tempo information is not limited to this. For example, the control unit 11 detects a predetermined break (for example, a break for each measure) from the karaoke accompaniment to be played back in time series, and detects this. The tempo may be calculated from the result. In short, the control unit 11 may acquire information related to the tempo as tempo information.

(2) In the above-described embodiment, the singer is notified by displaying the scoring result on the display unit 13. The notification mode is not limited to this. For example, the notification may be performed by outputting a voice message, or information indicating the determination result may be transmitted to the singer's mail terminal in an e-mail format. Good. In addition, information indicating the determination result may be output to the storage terminal and stored. In this case, the operator can refer to the information by reading the information from the storage medium using a computer. it can. The determination result may be printed out on a predetermined sheet. In short, any information may be output as long as it can output a message or information to the singer by any means.

(3) In the above-described embodiment, the reference data to be compared with the singing voice may be, for example, data representing the guide melody of the music, or may be data representing the singing voice serving as a model of the music. Any data may be used as long as it represents the sound that serves as an example of the music.

(4) In the above-described embodiment, the singing voice of the singer is analyzed in real time, but it is not always necessary to analyze in real time. For example, the audio signal stored in advance in the storage unit may be analyzed. Good. In addition, for example, the karaoke apparatus 1 is provided with a communication unit for performing data transmission via a communication network such as the Internet, so that an audio signal is received via the communication network and the received audio signal is analyzed. Also good.

(5) In the above-described embodiment, the control unit 11 generates the reference pitch data RP from the reference data included in the music data stored in the music data storage area 121. Reference pitch data representing the pitch may be stored in the storage unit 12 in advance.

(6) In the above-described embodiment, the singing voice of the singer and the reference data are compared. However, instead of the singing voice of the singer, the performance sound of the instrument by the performer and the reference data may be compared. The “speech” referred to in the present embodiment includes various sounds such as a sound generated by a person and a performance sound of a musical instrument.

(7) In the above-described embodiment, the karaoke apparatus 1 performs all the processes according to the present embodiment. On the other hand, two or more devices connected by a communication network may share the functions according to the above-described embodiment, and a system including the plurality of devices may realize the karaoke device 1 of the same embodiment. . For example, a computer device including a microphone, a speaker, a display device, an operation unit, and the like may be configured as a system in which a server device that executes scoring processing is connected via a communication network. In this case, for example, the computer apparatus converts the sound collected by the microphone into an audio signal and transmits it to the server apparatus, and the server apparatus analyzes and scores the received audio signal, and the scoring result is calculated by the computer apparatus. May be sent to.

(8) The program executed by the control unit 11 of the karaoke apparatus 1 in the above-described embodiment is recorded on a recording medium such as a magnetic tape, a magnetic disk, a flexible disk, an optical recording medium, a magneto-optical recording medium, RAM, or ROM. Can be provided in state. It is also possible to download to the karaoke apparatus 1 via a network such as the Internet.

(9) In the above-described embodiment, the control unit 11 reflects the content of the tempo control information in the scoring result using the expression (2). However, the aspect of reflecting the content of the tempo control information in the scoring result is not limited thereto. In short, the control unit 11 may be anything as long as the tempo control information is reflected in the scoring result so that the scoring standard becomes stricter as the tempo indicated by the tempo control information becomes slower. Specifically, for example, the control unit 11 may reflect the contents of the tempo control information in the scoring result using the following equation (6).
tp = tp * (100 + per + α) / 100 (6)

In the above-described embodiment, the control unit 11 reflects the music tempo information in the scoring result using the equation (5). However, the aspect in which the music tempo information is reflected in the scoring result is not limited to this. May be anything as long as the music tempo information is reflected in the scoring result so that the grading standard becomes stricter as the tempo indicated by the music tempo information becomes slower. Specifically, for example, the control unit 11 may reflect the content of the music tempo information in the scoring result using the following equation (7).
tp = tp * ((100 + p + α) / 100) (7)

  In the expression (6) or (7), for example, the control unit 11 may determine the value of α according to the type of music (for example, when the music type is enka, α = −5, pops Α = 0 for cases, α = -10 for nursery rhymes, etc.). By doing this, the score balance can be controlled by making it difficult for enka with many songs with slow original tempos and nursery rhymes with many songs that are easy to sing.

  Moreover, in the formula (6) or the formula (7), the control unit 11 may determine the value of α according to the singer's age. Specifically, for example, the control unit 11 may determine the value of α using a function as shown in FIG. In FIG. 11, the horizontal axis indicates the age of the singer, and the vertical axis indicates the value of α. In this case, the singer performs an operation of inputting his / her age using the operation unit 14. The control unit 11 acquires age information indicating the singer's age according to the operation signal output from the operation unit 14, and determines the value of α from the acquired age information using a function shown in FIG. Thus, by determining the value of α using the singer's age, for example, easy scoring can be performed for children and the elderly.

  For example, in the formula (6) or the formula (7), the birthday of the singer may be reflected in the value of α. Specifically, for example, the control unit 11 may set α = 0 for a singer's birthday and α = 10 for a date other than the birthday. In this case, the singer performs an operation of inputting his / her birthday using the operation unit 14, and the control unit 11 determines the birthday that the date is input in response to an operation signal from the operation unit 14. If they match, the scoring results are corrected so that the scoring results are higher than in other cases. In this way, it is possible to give a gentle scoring to a birthday person.

  For example, in the formula (6) or the formula (7), the control unit 11 may determine the value of α according to the distribution state to the terminal. Specifically, for example, in a system in which a computer device (terminal) and a server device are connected via a communication network as shown in Modification (7), how many weeks have passed since the server device was last delivered to the terminal. Depending on this, the value of α may be determined using a function as shown in FIG. In FIG. 12, the horizontal axis indicates the week that has passed since the final delivery, and the vertical axis indicates the value of α. In this case, the server device stores the last delivery date for each terminal, and determines the value of α using the function shown in FIG. 12 according to how many weeks have passed since the last delivery date. If it does in this way, the effect which prompts a singer to receive distribution will also be acquired.

It is a block diagram which shows an example of the hardware constitutions of a karaoke apparatus. It is a figure which shows the structure of music data. It is a figure which shows the content of the reference data track contained in music data. It is a figure which shows the flow of the process which the control part of a karaoke apparatus performs. It is a flowchart which shows the flow of the process which a scoring part performs. It is a figure for demonstrating the content of the scoring process. It is a figure for demonstrating the content of the scoring process. It is a figure for demonstrating the content of the scoring process. It is a figure for demonstrating the calculation method of a point deduction point rate. It is a figure for demonstrating the calculation method of a point deduction point rate. It is a figure for demonstrating the content of the scoring process. It is a figure for demonstrating the content of the scoring process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Karaoke apparatus, 11 ... Control part, 12 ... Memory | storage part, 13 ... Display part, 14 ... Operation part, 15 ... Microphone, 16 ... Sound processing part, 17 ... Speaker, 121 ... Music data storage area, 122 ... Background image Data storage area.

Claims (8)

Storage means for storing reference data representing sounds that serve as examples of music;
Reading means for reading the reference data stored in the storage means;
Obtaining means for obtaining tempo information representing the tempo of the music;
A scoring unit that compares the audio signal supplied from the sound collection unit and the reference data read by the reading unit, and performs scoring according to the difference between the audio signal and the tempo information acquired by the acquiring unit. Scoring means for scoring so that the slower the tempo shown, the stricter the scoring criteria;
And an output means for outputting data indicating the result of the scoring by the scoring means. Storage means for storing reference data that represents a sound as an example of a song in a row of notes;
Reading means for reading the reference data stored in the storage means;
An audio signal supplied from a sound collection means and reference data read by the reading means are compared for each note, and scoring means for scoring for each note according to the difference between the two, Scoring means for scoring each note so that the longer the note length, the stricter the scoring criteria;
And an output means for outputting data indicating the result of the scoring by the scoring means. The storage means stores reference data representing a sound as an example of the music in a row of notes,
The scoring means is a scoring means for comparing the audio signal supplied from the sound collection means and the reference data read by the reading means for each note and scoring according to the difference between the two. The scoring standard becomes stricter as the tempo indicated by the tempo information acquired by the acquisition means becomes slower, and the scoring standard is made stricter as the note length of the note becomes longer. Item 10. The scoring device according to item 1. The storage means stores reference data representing a sound as an example of the music in association with tempo information representing the tempo of the music,
The scoring device according to claim 1 or 3, wherein the acquisition unit reads tempo information corresponding to the reference data read by the reading unit from the storage unit. The scoring device according to claim 1, wherein the acquisition unit acquires the tempo information according to an operation signal output from an operation unit operated by a user. The scoring means compares the audio signal and the reference data for each note, performs scoring for each note according to the difference between the two, and totalizes the scoring results for each note. The scoring device according to claim 2 or 3, wherein A computer comprising storage means for storing reference data representing a sound that serves as an example of music,
Reading means for reading the reference data stored in the storage means;
Obtaining means for obtaining tempo information representing the tempo of the music;
A scoring unit that compares the audio signal supplied from the sound collection unit and the reference data read by the reading unit, and performs scoring according to the difference between the audio signal and the tempo information acquired by the acquiring unit. Scoring means for scoring so that the slower the tempo shown, the stricter the scoring criteria;
A program that functions as an output unit that outputs data indicating a scoring result by the scoring unit. A computer comprising storage means for storing reference data that represents a model sound of music by a sequence of notes,
Reading means for reading the reference data stored in the storage means;
The scoring means for comparing the audio signal supplied from the sound collection means and the reference data stored in the storage means for each note, and scoring for each note according to the difference between the notes. A scoring means for scoring each note so that the scoring criteria become stricter as the note length is longer,
A program that functions as an output unit that outputs data indicating a scoring result by the scoring unit.

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