JP6308915B2 - Karaoke equipment - Google Patents

Description

   The present invention relates to a karaoke apparatus having at least a scoring function for scoring a song of a singer.

   In recent years, along with higher performance of karaoke equipment, those equipped with advanced scoring technology have also become common, while karaoke rooms have been established in many places, and karaoke singing spaces such as karaoke rooms have internal shapes, karaoke Because it has a frequency characteristic (acoustic characteristic) specific to the installation position of the equipment and the interior parts, especially if there is a singing pitch that overlaps with the peak frequency or dip frequency at the singer's position, the singing score will be affected. Scoring processing according to acoustic characteristics is required.

   Conventionally, a service for evaluating a user's singing according to a karaoke performance and displaying a scoring result and a ranking has been widespread. For example, Patent Document 1 discloses a melody (reference) data to be sung by converting a singing voice signal input to a microphone into a digital signal, detecting the pitch, volume, and timing for each minute singing section by signal processing. A karaoke apparatus for scoring a song by comparing with is disclosed.

Japanese Patent Laid-Open No. 10-078749

   By the way, a karaoke singing space such as a karaoke room always has a unique frequency characteristic, and there may be a peak frequency where the volume is larger than other frequencies and a dip frequency where the volume is smaller than other frequencies. In this case, if there is a peak frequency that overlaps with a specific singing pitch at the singer's standing position, the singer will listen to the singing of that pitch at a louder volume than other pitches. This tendency becomes remarkable when trying to sing at a reduced volume, especially when there is a long-tone singing with a pitch that overlaps the peak frequency. As a result, even if the volume of the singing voice emitted from the speaker is appropriate, in the scoring process disclosed in Patent Document 1, the volume of the singing voice input directly to the microphone is compared with the reference volume. Therefore, there is a problem that it is evaluated that the sound volume is not adequate and the scoring result is unreasonably worse.

   Conversely, if there is a dip frequency that overlaps a specific singing pitch at the singer's standing position, the singer will listen to the singing of that pitch at a lower volume than other pitches. This tendency becomes prominent when trying to sing a high volume loudly, especially when there is a long tone singing with a pitch that overlaps the dip frequency. As a result, even if the volume of the singing voice that is emitted from the speaker is appropriate, the volume of the singing voice that is input directly to the microphone is compared with the reference volume. There is a problem that the result is unreasonably worse.

   Therefore, the present invention has been made in view of the above problems, and provides a karaoke apparatus that avoids the adverse effects of singing scoring caused by the frequency characteristics of the karaoke singing space.

   In order to solve the above-mentioned problem, in the invention of claim 1, a karaoke apparatus installed in a karaoke singing space in which a frequency characteristic is measured, the frequency characteristic of the karaoke singing space and a scale according to a predetermined tuning. And detecting means for detecting the peak pitch corresponding to the peak frequency and the dip pitch corresponding to the dip frequency, and the karaoke performance data being played and singing by the singer Singing with a pitch other than the detected peak pitch and dip pitch, at least in comparison with the pitch, volume, and timing for each predetermined scoring section based on the corresponding reference data There is a first scoring standard for scoring a score, and a second scoring standard for scoring a song sung at the peak or dip pitch according to a scoring standard different from the first scoring standard. And scoring means that, configured to have a.

In the second and third aspects of the invention, “the scoring means scores a song by comparing at least the pitch, volume and timing of the song with reference data corresponding to each predetermined song section according to the first scoring standard. In the second scoring criteria, at least the pitch and timing of the song are scored by comparing the reference data for each predetermined singing section, and the volume is excluded from evaluation.
“The scoring means scores a song by comparing at least the pitch, volume, and timing of the song with reference data corresponding to each predetermined singing section in the first scoring standard, and at least the singing in the second scoring standard. The singing is scored by comparing the pitch and timing with the reference data for each predetermined singing section, and when the volume of the detected peak pitch singing is smaller than the volume of the reference data, the volume is the same as the reference data. If the volume of the song with the detected dip pitch is higher than the volume of the reference data, it is scored as being sung at the volume according to the reference data.

   According to the present invention, the frequency characteristic of the karaoke singing space is compared with the frequency of each pitch of the scale according to a predetermined tuning, and the peak pitch corresponding to the peak frequency and the dip pitch corresponding to the dip frequency are obtained. Detecting and singing a song sung at a pitch other than the peak and dip pitches based on the first scoring standard, and singing a song sung at the peak or dip pitch is different from the first scoring standard By adopting a configuration for scoring according to the second scoring standard of scoring standards, deductions at the peak frequency and dip frequency for singing can be avoided, and adverse effects of singing scoring due to the frequency characteristics of karaoke singing space can be avoided, The scoring result can be made closer to the image heard by a singer or listener.

It is a block block diagram of the karaoke apparatus which concerns on this invention. It is explanatory drawing of the frequency characteristic of karaoke song space. It is a flowchart which specifies a peak pitch and a dip pitch from the frequency characteristic measurement of FIG. It is explanatory drawing which specifies a peak pitch and a dip pitch from the frequency characteristic measurement of FIG. It is a flowchart of 1st Embodiment in the scoring means of FIG. It is a flowchart of 2nd Embodiment in the scoring means of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a block diagram of a karaoke apparatus according to the present invention, and FIG. 2 shows an explanatory diagram of frequency characteristics of a karaoke singing space. In FIG. 1, each karaoke device 11 is connected to a karaoke main body 12 as a main device by wire or wirelessly, and includes a display unit 13, a mixing amplifier 14, a microphone 15 as a sound collecting means, a speaker 16, a remote An input / output device 17 is connected. The mixing amplifier 14 and the speaker 16 constitute sound emission means.

   The display unit 13 displays a normal music selection display, a background image at the time of karaoke performance, a result of scoring a singer's singing, etc., for example, a liquid crystal display (LCD), a plasma display (PDP), and other various types. A display can be employed. The mixing amplifier 14 mixes a signal collected by the microphone 15 with a music performance signal (including karaoke performance data for measurement) sent from the karaoke main body 12 at a set mixing level, amplifies the signal, and outputs a speaker. 16 is output.

   Here, the mixing amplifier 14 is a so-called digital mixer, and includes a DSP (Digital Signal Processor) that performs mixing processing, equalizing processing, and effect processing. The line system of the speaker 16 is provided with a D / A conversion unit and an amplification unit. An A / D conversion unit is provided in the line system of the microphone 15. The output from the A / D converter is input to the DSP input bus and also input to the scoring means 28 of the karaoke main body 12.

   The remote input / output device 17 transmits / receives data to / from the karaoke main body 12 using a wired system or a wireless system (IR system, Bluetooth (registered trademark) mechanism piconet connection system, etc.) by a terminal transmission / reception unit (not shown). Therefore, at least music selection music registration means 17A as music search means is provided as appropriate. The music selection music registration means 17 </ b> A is a program for searching for music and registering the music selected with a table for music selection in the reservation queue 41 in the karaoke main body 12.

   The karaoke main body 12 includes a bus 20, a central control unit 21, a ROM 22, a RAM 23, a video display control unit 24, a music performance control unit 25, a sound source (synthesizer) 26, a transmission / reception unit 27, a scoring unit 28, a storage unit 30, and a measurement unit. Are suitably provided with a frequency characteristic measuring means 31 as an acoustic characteristic detecting means and an acoustic characteristic detecting means 32 as a detecting means. In the RAM 23, a storage area for the reservation queue 41 is appropriately formed. In addition, the storage unit 30 stores a music database (music DB) 51, a video database (video DB) 52, a reference database (reference DB) 53, and an acoustic characteristic 54 using the peak pitch and the dip pitch as one piece of information. Is done. In addition, about each said structure, even if it is an element part which is not directly related to the summary of this invention, in order to show that most can be applied also in the conventional karaoke system, the whole component is demonstrated.

   The central control unit 21 is a physical CPU that performs overall processing control of the system, and performs algorithm processing based on a program stored in the ROM 22. The RAM 23 serves as a work area for developing and executing the various programs, in addition to forming at least a storage area for the reservation queue 41. It is a concept including the case where it is constructed on a hard disk.

   The video display control means 24 is a program or an electronic circuit that outputs the background video extracted from the video DB 52 and the lyrics data of the music extracted from the music DB 51 to the display unit 13 during performance. Further, the video display control means 24 outputs the result of scoring the song by the scoring means 28 during and after the performance to the display unit 13. The music performance controller 25 includes, for example, a sequence program, and drives a sound source (synthesizer) 26 in accordance with the note data extracted from the music DB 51 with the music ID. The output of the sound source 26 is sent to the mixing amplifier 14 as a performance signal. Is output.

   The transmission / reception unit 27 is used to exchange data with the remote input / output device 17 using a wired system or a wireless system (such as an IR system or a Bluetooth (registered trademark) mechanism piconet connection system). Electronic circuit and program.

   The scoring means 28 performs scoring by detecting the pitch, volume, and timing (rhythm) of the singing voice by the user for each predetermined singing section, and comparing it with at least the pitch, volume, and timing of reference data described later. It is a program and performs a scoring process based on reference data for singing a singing voice signal obtained by digitally converting the singing voice signal from the microphone 15 through the mixing amplifier 14. Specifically, for example, a technique described in Japanese Patent No. 4229915 can be used.

   The scoring process includes a first scoring standard and a second scoring standard. On the basis of the peak pitch and the dip pitch of the acoustic characteristic 42 detected by the acoustic characteristic detecting means 32 described later and stored in the storage unit 30, the pitches other than the peak pitch and the dip pitch are determined based on the first scoring standard. In the second scoring standard, the song sung at the peak pitch or dip pitch is scored according to a scoring standard different from the first scoring standard.

   Specifically, the singing is scored by comparing at least the pitch, volume, and timing of the singing with reference data corresponding to each predetermined singing section in the first scoring standard, and at least the singing pitch in the second scoring standard. The singing is scored by comparing the timing with the reference data for each predetermined singing section, and the volume is excluded from the evaluation.

   Or, according to the first scoring standard, the singing is scored by comparing at least the pitch, volume and timing of the singing with the corresponding reference data for each predetermined singing section, and at least the singing pitch and timing according to the second scoring standard. Is compared with the reference data for each predetermined singing section, and if the volume of the peak-pitch singing is smaller than the volume of the reference data, the singing is scored as being sung at the reference data volume. If the volume of the song with the dip pitch is higher than the volume of the reference data, it is scored as being sung at the volume corresponding to the reference data.

   In addition, although pitch, volume, and timing were elements as the above scoring targets, technique data (vibrato information, intonation information, long tone information, running information, Therefore, scoring may be performed by adding information, fist information, squeak information, fall information, shout information, and the like.

   The music DB 51 stored in the storage unit 30 stores note data, lyrics data, and the like for each music. Regarding performance, specifically, there is a music table in which a music ID, a music title, and an artist ID (artist name) are associated, and for each music, note data of a karaoke music in a predetermined data format managed by the music ID (for example, , MIDI (registered trademark) format note data) or the like, and the music ID is stored as a file name. The video DB 52 stored in the storage unit 30 is a database in which music IDs are stored as file names for background video data corresponding to each music.

   Reference DB53 memorize | stored in the said memory | storage part 30 is used as an evaluation standard for evaluating and analyzing the karaoke music memorize | stored in the said music DB51, and the song by the singer matched with the predetermined song area of the said karaoke music piece. This is a database that stores reference data to be associated with each other. The acoustic characteristic 54 stored in the storage unit 30 is obtained by using the peak pitch and the dip pitch of the karaoke singing space where the karaoke apparatus 11 is installed, which is detected by the acoustic characteristic detection unit 32 described later, as one piece of information. It is.

   The frequency characteristic measuring means 31 is a program or an electronic device that measures frequency characteristics of a karaoke singing space such as a karaoke room. Various known techniques can be applied to the measurement, and a detailed configuration for that purpose is omitted. For example, when the technique described in Japanese Patent Laid-Open No. 2000-316199 is applied, white noise is emitted from the speaker 16, collected by the microphone 15 installed at the singing position, and frequency characteristics with respect to the average level (Lr). Can be measured. An example of the frequency measurement of the measured karaoke singing space is shown in FIG. The frequency characteristics may be measured once for each karaoke singing space (karaoke room), but may be periodically measured again.

   The acoustic characteristic detecting means 32 identifies the peak frequency Fp and the dip frequency Fd from the frequency characteristic of the karaoke singing space measured by the frequency characteristic measuring means 31, and the peak frequency Fp and the dip frequency Fd and a predetermined tuning (master tuning). ), The peak pitch Np corresponding to the peak frequency and the dip pitch Nd corresponding to the dip frequency Fd are detected, and the peak pitch Np and the dip pitch are detected. This is a program for storing Nd as one piece of characteristic information in the acoustic characteristic 54 of the storage unit 30. Details will be described with reference to FIGS.

   In the frequency characteristic of the karaoke singing space measured by the frequency characteristic measuring means 31, there may be no peak frequency Fp and no dip frequency Fd, or there may be a plurality. When there is none, the peak pitch Np and the dip pitch Nd are not specified, and when there are a plurality of peaks, the peak pitch Np and the dip pitch are set for all peak frequencies Fp and dip frequencies Fd. Nd is detected. On the other hand, even if the peak frequency Fp and the dip frequency Fd are present in the frequency characteristics of the karaoke singing space, none of the peak pitch Np and the dip pitch Nd may be detected, or there may be a plurality.

   Further, when the frequency characteristic measuring means 31 re-measures the frequency characteristic of the karaoke singing space (karaoke room), the peak pitch Np and the dip pitch Nd are calculated based on the re-measured frequency characteristic each time. And the acoustic characteristic 54 of the storage unit 30 is updated.

   Therefore, FIG. 3 shows a flowchart for specifying the peak pitch and dip pitch from the frequency characteristic measurement of FIG. 2, and FIG. 4 is an explanatory diagram for specifying the peak pitch and dip pitch from the frequency characteristic measurement of FIG. Show. Here, it is assumed that the frequency characteristic measuring means 31 measures frequency characteristics as shown in FIG. 2 of a karaoke singing space such as a karaoke room in which the karaoke apparatus 11 is installed. In FIG. 2, the volume of the frequency other than the frequencies expected to be dip and peak is simplified.

   In FIG. 3, the acoustic characteristic detecting means 32 has a pitch within a range that can be sung by a general user, for example, 3 octaves from the lowest pitch G2 of baritone (male voice) to the highest pitch G5 of mesosoprano (female voice). , Ie, 37 pitches G2, G # 2, A2,..., F5, F # 5, G5, a predetermined tuning, for example, A4 = 442 Hz as shown in FIG. The frequencies fG2, fG # 2, fA2,..., FF5, fF # 5, and fG5 based on the tune (master tuning) are obtained (step 1 (S1)).

   Further, the frequency characteristic (FIG. 2) measured by the frequency characteristic measuring means 31 is acquired, and as shown in FIG. 4 (B), the level is larger than the average level Lr by a predetermined value β or more than the average level Lr. A frequency is obtained as a peak frequency Fp, and a frequency having a level not less than a predetermined value α is obtained as a dip frequency Fd (S2). Note that either the processing order of S1 and S2 may be first. If neither the peak frequency Fp nor the dip frequency Fd exists, the peak pitch Np and the dip pitch Nd are not specified, and the process ends (S3). Further, even when one of the peak frequency Fp and the dip frequency Fd does not exist, the peak pitch Np and the dip pitch Nd for the nonexistent peak frequency Fp or dip frequency Fd are not specified, and the processing ends. S4-1, S4-2).

   On the other hand, when either or both of the peak frequency Fp and the dip frequency Fd exist (S4-1, S4-2), as shown in FIG. 4C, each pitch tuned by master tuning in FIG. It is determined whether or not the peak frequency Fp and / or the dip frequency Fd is included in a frequency having a predetermined width (for example, within ± 10 cents) centered on each frequency, and corresponds to a frequency band including the peak frequency Fp. The pitch that corresponds to the peak pitch Np and the pitch corresponding to the frequency band including the dip frequency Fd are specified as the dip pitch Nd (S5).

   Here, assuming that there is one peak frequency Fp and one dip frequency Fd, as shown in FIG. 4D, for example, if fC5-10cent ≦ Fp ≦ fC5 + 10cent, “C5 (526 Hz)” is the peak sound. If it is specified as high Np and fG4-10 cent ≦ Fd ≦ fG4 + 10 cent, “G4 (394 Hz)” is specified as the dip pitch Nd.

   Then, the specified peak pitch Np and dip pitch Nd are stored as one characteristic information of the acoustic characteristic 54 of the storage unit 30 (S6).

   Next, FIG. 5 shows a flowchart of the first embodiment in the scoring means of FIG. When the music registered in the reservation queue 41 of the RAM 23 is played, the singing voice signal from the microphone 15 is input to the scoring means 28 through the mixing amplifier 14 as a digitally converted singing voice signal and the scoring process is performed. Done.

   In FIG. 5 (A), the scoring means 28 reads the performance music reference data from the reference DB 53 of the storage unit 30, reads the peak pitch Np and the dip pitch Nd from the acoustic characteristic 54, and sequentially reads the singing voice signals. Obtain (S11).

   In the acquired singing voice signal, singing that does not correspond to the peak pitch Np and the dip pitch Nd, that is, other than the peak pitch Np and the dip pitch Nd (S12), is scored according to the first scoring standard ( S13-1). In the acquired singing voice signal, the singing corresponding to the peak pitch Np and the dip pitch Nd (S12) is scored according to the second scoring standard (S13-2).

   In the scoring process based on the first scoring standard, as shown in FIG. 5B, the pitch, volume, and rhythm (timing) of the singing are scored by comparing with the reference data (S21). In the scoring process based on the second scoring standard, as shown in FIG. 5C, the pitch and rhythm of the song are scored by comparing with the reference data (S31). That is, the singing volume is not scored, and no deduction by volume is performed.

   And after completion | finish of a singing, the score for every singing area is totaled and a scoring result is produced (S14), and it memorize | stores in the user information of a server, for example as a display in the display part 13, or a song history. In this way, it is possible to prevent the singing from being inappropriately deducted for peak pitches and dip pitches that are difficult to sing at a volume equivalent to the reference data.

   Next, FIG. 6 shows a flowchart of the second embodiment in the scoring means of FIG. 6 (A) and 6 (B) show a scoring process for the second scoring standard in scoring means 28. In FIG. 6 (A), in the acquired singing voice signal, the peak pitch Np And the singing pitch, volume, and rhythm are scored by comparing with the reference data for the singing corresponding to the dip pitch Nd (S41).

   Specifically, in FIG. 6B, when comparing the pitch, volume, and rhythm of the singing with the reference data, the singing volume with the peak pitch Np is compared with the reference volume (S51-1), When the singing volume of the pitch Np is smaller than the reference volume (S52-1), it is scored as being sung according to the reference volume (S53-1), and the singing volume of the peak pitch Np is larger than the reference volume. (S52-1), a scoring process is performed based on the difference from the reference volume based on the first scoring standard (S53-2).

   When comparing the pitch, volume, and rhythm of the singing with the reference data, the singing volume with the dip pitch Nd is compared with the reference volume (S51-2), and the singing volume with the dip pitch Nd is greater than the reference volume. When the volume is high (S52-2), the score is determined as being sung according to the reference volume (S53-3), and when the singing volume of the dip pitch Nd is smaller than the reference volume (S52-2), the first The scoring process is performed based on the difference from the reference volume based on the scoring standard (S53-4). In this way, when the singer sings with a low pitch when singing at a peak pitch that is heard at a louder volume than other pitches, or when singing at a dip pitch that is heard at a lower volume than other pitches When the singer sings strongly, it is determined that the singing volume is appropriate, and the singing of the pitch can be appropriately evaluated.

   In this way, deductions at the peak frequency and dip frequency for the singing can be avoided, the adverse effects of singing scoring due to the frequency characteristics of the karaoke singing space can be avoided, and the singer and listener listened to the scoring results It can be brought close to the image.

   The karaoke apparatus of the present invention can be used in the industrial field of karaoke apparatuses having basic functions including a karaoke scoring function.

DESCRIPTION OF SYMBOLS 11 Karaoke apparatus 12 Karaoke main body 14 Mixing amplifier 15 Microphone 16 Speaker 25 Music performance control part 28 Scoring means 30 Memory | storage part 31 Frequency characteristic measuring means 32 Acoustic characteristic detection means 41 Reservation queue 51 Music DB
53 Reference DB
54 Acoustic characteristics

Claims (3)

A karaoke apparatus installed in a karaoke singing space where frequency characteristics are measured,
Detection means for detecting the peak pitch corresponding to the peak frequency and the dip pitch corresponding to the dip frequency by comparing the frequency characteristic of the karaoke singing space with the frequency of each pitch of the scale according to a predetermined tuning. When,
The karaoke performance data is played and scored in comparison with at least the pitch, volume and timing for each predetermined scoring section based on the reference data corresponding to the singing by the singer, and the detected peak sound A first scoring standard for scoring a song sung at a pitch other than high and dip pitch, and a second scoring for a song sung at the peak or dip pitch according to a scoring standard different from the first scoring standard. Scoring means with scoring standards;
A karaoke apparatus comprising:    2. The karaoke apparatus according to claim 1, wherein the scoring means scores a song by comparing at least the pitch, volume, and timing of the song with corresponding reference data for each predetermined song section according to the first scoring standard. According to the second scoring standard, the singing is scored by comparing at least the pitch and timing of the singing with the reference data for each predetermined singing section, and the volume is excluded from the evaluation. apparatus.    2. The karaoke apparatus according to claim 1, wherein the scoring means scores a song by comparing at least the pitch, volume, and timing of the song with reference data corresponding to each predetermined song section according to the first scoring standard. In the second scoring standard, the singing is scored by comparing at least the pitch and timing of the singing with the reference data for each predetermined singing section, and the volume of the detected peak pitch singing is higher than the volume of the reference data If it is small, it is scored as if it was sung at the volume according to the reference data, and if the volume of the song with the detected dip pitch is larger than the volume of the reference data, it is assumed that the song was sung at the volume according to the reference data Karaoke device characterized by scoring.

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