JP6315468B2 - Karaoke device equipped with acoustic characteristic measurement function for karaoke singing space - Google Patents

Description

  The present invention relates to a karaoke apparatus having at least a scoring function for scoring a singer's song for each singing section.

  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 It has an acoustic characteristic (frequency characteristic) that is unique to the installation position of the device and the interior parts, and especially when there is a singing pitch that overlaps with the dip frequency at the singer's position, it gives the singer the impression that the microphone is poorly sucked Since it affects the singing scoring, a scoring process according to the acoustic characteristics is required. It is desirable to be able to easily measure the acoustic characteristics for that purpose.

  Conventionally, the frequency characteristics of karaoke singing spaces such as karaoke rooms are measured by emitting a measurement signal from a speaker, collecting it with a microphone at a listening point such as the singer's position, and analyzing the collected signal. It has become common. For example, as disclosed in Patent Document 1, a karaoke apparatus includes a test sound source and a characteristic measurement unit, uses a white noise signal or a pink noise signal as an acoustic characteristic measurement signal, and uses an acoustic characteristic measurement signal from a speaker installed in a karaoke room. It is known to emit sound by a signal, pick up sound from a microphone installed at a singer's standing position in a room, and measure frequency characteristics by a characteristic measuring unit.

JP 2008-224815 A

  However, the speakers and microphones necessary for measuring the frequency characteristics can be those installed in the karaoke room, but the normal karaoke apparatus does not have a test sound source or characteristic measurement unit, so the above-mentioned patent When using the technique disclosed in Document 1, there is a problem that a new hardware resource needs to be added, resulting in an increase in size and cost.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a karaoke apparatus that can easily and inexpensively measure the acoustic characteristics of a karaoke singing space without adding new hardware resources.

  In order to solve the above-mentioned problems, in the invention of claim 1, karaoke performance data of a predetermined music is played, and at least a pitch and a volume for each predetermined scoring section based on reference data corresponding to a song performed by a singer. A karaoke device that performs scoring in comparison, and karaoke performance data for performing karaoke performance and reference data for scoring a song by a singer in accordance with the karaoke performance are stored in association with each other, and karaoke Karaoke performance data for measurement that generates a sound signal for frequency characteristic measurement for measuring the frequency characteristic of the singing space, and frequency characteristic measurement for scoring by comparing the pitch and volume with the sound signal for frequency characteristic measurement Memory means for storing reference data in association with it and playing back karaoke performance data Generating a performance sound signal and reproducing the stored karaoke performance data for measurement to generate a frequency characteristic measurement sound signal when the frequency characteristic of the karaoke singing space is measured; A sound emission that emits only the acoustic signal for frequency characteristic measurement generated by the reproducing means at the time of measuring the frequency characteristic of the karaoke singing space while emitting the performance acoustic signal for the performed singing and the singing acoustic signal of the singer Means for collecting the singer's singing acoustic signal, collecting the emitted sound signal for frequency characteristic measurement, and detecting the pitch and volume from the singing acoustic signal of the singer In addition to scoring based on the stored reference data, the sound collecting means emits sound from the sound emitting means when measuring the frequency characteristics of the karaoke singing space. Scoring means for detecting the pitch and volume from the sound signal for frequency characteristic measurement sounded and scoring in each scoring section based on the stored reference data for frequency characteristic measurement; and sound for frequency characteristic measurement in the scoring means Based on the scoring result for the signal, the pitch corresponding to the scoring interval that is smaller than the volume of the frequency characteristic measurement reference data corresponding to the volume of the frequency characteristic measurement acoustic signal is specified as the dip frequency of the karaoke singing space. Acoustic characteristic information processing means for identifying a pitch corresponding to a scoring section that is at least a predetermined value larger than the volume of the frequency characteristic measurement reference data corresponding to the volume of the frequency characteristic measurement acoustic signal as the peak frequency of the karaoke singing space; It is set as the structure which has.

According to invention of Claims 2-7, "The said sound collection means is a microphone installed in the singing position of the said karaoke singing space, and it collects the sound signal for frequency characteristic measurement which were emitted at the said singing position. To be configured,
“The karaoke performance data for measurement is an audio signal by a sine wave swept from a low frequency to a high frequency in a predetermined frequency range”,
“The karaoke performance data for measurement is performance information data for generating a musical tone of each pitch for each semitone”,
“The acoustic characteristic information processing means displays on the display means frequency characteristic data including the specified dip frequency and peak frequency of the karaoke singing space”,
“The sound emitting means includes an equalizer for correcting the frequency characteristics of the sound signal to be emitted, and the volume of the singing at the dip frequency and the peak frequency specified by the acoustic characteristic information processing means with respect to the equalizer of the sound emitting means. It has a function for measuring acoustic characteristics of a karaoke singing space characterized by having a volume correction setting means for correcting
“A first mode in which a singer sings in accordance with a performance sound signal generated by reproducing karaoke performance data by the reproduction means, and a mode for measuring frequency characteristics of a karaoke singing space, wherein the reproduction means Mode switching means for switching between a second mode for reproducing the measurement karaoke performance data and generating a frequency characteristic measurement acoustic signal is provided, and the sound emitting means is generated by the reproducing means in the first mode. A sound signal for frequency characteristic measurement generated by the reproduction means in the second mode is emitted by mixing the performance sound signal and the singing sound signal of the singer collected by the sound collection means. The sound signal collected by the sound collecting means is not mixed ”.

  According to the present invention, the karaoke performance data for measurement for generating the frequency characteristic measurement acoustic signal for measuring the frequency characteristic of the karaoke singing space in the storage means, and the pitch and volume are compared with the frequency characteristic measurement acoustic signal. The reference data for frequency characteristic measurement for scoring is stored, and the sound signal for frequency characteristic measurement of the measured karaoke performance data for sound emission is collected, and the collected sound signal for frequency characteristic measurement is collected. Scoring in each scoring section based on the frequency characteristic measurement reference data, and comparing the scoring result with the volume of the frequency characteristic measurement acoustic signal and the corresponding frequency characteristic measurement reference data Corresponds to a scoring section where the volume of the sound signal is smaller than the corresponding volume of the frequency characteristic measurement reference data by a predetermined value or more. The scoring function that the karaoke device exists is specified by specifying the frequency of the pitch as the dip frequency of the karaoke singing space and specifying the frequency of the pitch corresponding to the scoring section larger than the predetermined value as the peak frequency of the karaoke singing space Therefore, the acoustic characteristics of the karaoke singing space can be measured easily and inexpensively without adding new hardware resources.

It is a block block diagram of the karaoke apparatus which concerns on this invention. It is explanatory drawing of the data for a measurement of FIG. It is a flowchart regarding the measurement of the frequency characteristic of the karaoke song space which concerns on this invention. It is explanatory drawing of the frequency characteristic measurement of FIG. It is a partial block diagram regarding the other measurement of the frequency characteristic of the karaoke song space which concerns on this invention. It is explanatory drawing of the data for a measurement in FIG. It is a flowchart regarding the other measurement of the frequency characteristic of the karaoke song space which concerns on this invention. It is explanatory drawing of the frequency characteristic measurement of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a karaoke apparatus according to the present invention, and FIG. 2 is an explanatory diagram of the measurement data in FIG. 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 during karaoke performance, and the like. For example, a liquid crystal display (LCD), a plasma display (PDP), and other various displays 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.

  In the mixing amplifier 14, in the singing mode (described later) by switching the mode switching means 31 of the karaoke main body 12 to be described later, the performance sound signal generated by the reproducing means 25 and the singer collected by the microphone 15. The singing sound signal is mixed and emitted, and in the measurement mode (described later) by switching the mode switching means 31, only the frequency characteristic measurement acoustic signal generated by the reproducing means 25 is emitted and collected by the microphone 15. The sound signal that is sounded is not mixed, that is, the mixing level of the sound signal for frequency characteristic measurement collected by the microphone 15 is set to zero. This is because when the sound signal for frequency characteristic measurement collected by the microphone 15 is emitted, the sound signal is fed back and an accurate frequency characteristic cannot be measured.

  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 reproduction unit 25, a transmission / reception unit 27, a scoring unit 28, a storage unit 30, a mode switching unit 31, and an acoustic characteristic information processing unit. 32 and volume correction setting means 33. In the RAM 23, at least a reservation queue 41 is formed. The storage unit 30 stores a music database (music DB) 51, a video database (video DB) 52, and a reference database (reference DB) 53. 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. The process which outputs the frequency characteristic of the karaoke song space produced | generated by the means 32 to the display part 13 is also included. The reproduction means 25 is a program that reproduces karaoke performance data to generate a performance acoustic signal, and reproduces measurement karaoke performance data to generate a frequency characteristic measurement acoustic signal when measuring the frequency characteristics of the karaoke singing space. . The reproduction means 25 has both a function of reproducing MIDI (registered trademark) data and a function of reproducing an audio signal such as MP3, and is a technique known from the past.

  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 has a scoring program, and in the acoustic characteristic measurement mode (described later) of the karaoke singing space, a predetermined scoring section (for example, 15 msec) is applied to the frequency characteristic measurement acoustic signal collected from the microphone 15. ) For each frequency characteristic measurement acoustic signal is detected and compared with each volume of the corresponding frequency characteristic measurement reference data, and the scoring result corresponding to the frequency changing with time It becomes. A conventional technique can be applied to the scoring process.

  In the singing mode (described later), the pitch and volume of the singing voice by the user is detected and compared with the pitch and volume of corresponding reference data described later. A scoring process is performed on the singing voice signal after / D conversion based on the reference data for scoring the song included in the music data. Specifically, for example, a technique described in Japanese Patent No. 4229915 can be used. In addition, although the case where the scoring means 28 is scored in the singing mode and the measurement mode is shown, a new measuring scoring means may be provided for the measurement mode.

  The music DB 51 stored in the storage unit 30 stores note data, audio 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) note data) or music data (file) composed of audio data or the like, the music ID is stored as a file name, and the frequency characteristic of the karaoke song space as one karaoke performance data Is a database in which karaoke performance data for measurement that generates a frequency characteristic measurement acoustic signal for measuring the music is stored with a predetermined music ID. 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 in order to evaluate and analyze the song by the singer matched with the karaoke music memorize | stored in the said music DB51 and the sufficiently small song area (for example, 15 msec) of the said karaoke music. It is a database that stores the reference data used as the evaluation standard in association with each other. The reference data includes a pitch (pitch) to be sung according to at least a note number and velocity (size) for each music piece. In the MIDI device, the “do” in the center of the piano keyboard (88 keys) is “C4 (261.63 Hz)”, the highest note “do” is “C8 (4186.01 Hz)”, and the lowest note. The keyboard “L” is represented as “A0 (27.5 Hz)”.

  In addition, the reference DB 53 has a pitch with respect to the frequency characteristic measurement acoustic signal that is generated from the measurement karaoke performance data, and is emitted and collected in association with the measurement karaoke performance data stored in the music DB 51. In addition, frequency characteristic measurement reference data for scoring by comparing the volume is also stored.

  The measurement karaoke performance data is, for example, an audio signal (song A) that is a sine wave swept from a low frequency of 20 Hz to a high frequency of 20 KHz in a predetermined frequency range as shown in FIG. is there. Further, the reference data for frequency characteristic measurement corresponds to the karaoke performance data for measurement as shown in FIG. 2B, for example, and a reference pitch and a predetermined constant value (Lr) according to the change in frequency. Reference data having a reference volume. Note that if the music A is a 15-second scoring section with a 15-second music length, the scoring process is about 1,000 sections.

  The mode switching means 31 is a singing mode which is a first mode in which a singer sings in accordance with a performance sound signal generated by reproducing the karaoke performance data by the reproducing means 25, and frequency characteristic measurement of the karaoke singing space. Is a program for generating a command for switching to a measurement mode which is a second mode for reproducing the karaoke performance data for measurement by the reproducing means 25 and generating the acoustic signal for frequency characteristic measurement. Is the default state. The mode switching operation causes the karaoke main body 12 to output a measurement mode switching command from, for example, the remote input / output device 17 (for example, maintenance display).

  The acoustic characteristic information processing means 32 will be described in detail with reference to FIGS. 3, 4, 7, and 8, but based on the scoring result for each scoring section for the frequency characteristic measurement acoustic signal in the scoring means 28, the frequency The pitch corresponding to the scoring interval of the volume that is lower than the volume of the frequency characteristic measurement reference data corresponding to the volume of the frequency characteristic measurement reference data is specified as the dip frequency of the karaoke singing space, and the frequency characteristic measurement acoustic signal This is a program that specifies a pitch corresponding to a scoring section having a volume that is a predetermined value or more higher than the volume of the frequency characteristic measurement reference data corresponding to the volume as the peak frequency of the karaoke singing space. Specifically, one of the programs executed by the central control unit 21 constitutes the acoustic characteristic information processing means 32.

  The acoustic characteristic information processing means 32 may generate a frequency characteristic including the specified dip frequency and peak frequency and display it on the display unit 13.

  The volume correction setting unit 33 increases the volume of the dip frequency by an appropriate amount to the mixing amplifier 14 (equalizer) based on the dip frequency and the peak frequency specified by the acoustic characteristic information processing unit 32, and increases the volume of the peak frequency. It is a program that performs settings to reduce the appropriate amount.

  FIG. 3 shows a flowchart relating to the measurement of the frequency characteristic of the karaoke singing space according to the present invention, and FIG. 4 shows an explanatory diagram of the frequency characteristic measurement of FIG. First, when the karaoke apparatus 11 is started up and the measurement mode for obtaining the frequency characteristics of the karaoke singing space is set by the operator, the mode switching means 31 sets the mixing amplifier 14 to the measurement mode. The position of the microphone 15 is the singing position in the karaoke singing space. Thus, the frequency characteristic of the karaoke singing space can be reflected in the karaoke singing.

  Therefore, when the measurement karaoke performance data (music A) as an audio signal is registered in the reservation queue 41 in accordance with the measurement mode by switching the mode switching means 31, the music shown in FIG. A is read out and sent to the mixing amplifier 14 to emit sound from the speaker 16 (step 1 (S1)). By reproducing the measurement karaoke performance data (music A), the microphone 15 installed at the singing position collects the measurement acoustic signal emitted from the speaker 16. The collected acoustic signal for measurement is input to the mixing amplifier 14, A / D converted and sent to the scoring means 28 of the karaoke main body 12, and in the mixing processing in the mixing amplifier 14, the acoustic signal for measurement depends on the measurement mode. The mixing level is controlled to zero. That is, the measurement acoustic signal passes through the mixing amplifier, is A / D converted, and is input to the scoring means 28 (S2).

  The scoring means 28 acquires the A / D-converted frequency characteristic measurement acoustic signal, reads out the frequency characteristic measurement reference data of the music piece A from the reference DB 53, and performs the frequency characteristic for each scoring section (for example, 15 msec). The pitch and volume of the measurement acoustic signal are detected and scored in comparison with each volume of the corresponding frequency characteristic measurement reference data (S3). The scoring results are shown in FIGS. 4 (A) and 4 (B), for example. Since the audio signal having a low frequency has a long wavelength, the pitch is detected across a plurality of scoring sections. For example, since an audio signal in the vicinity of 25 Hz has a wavelength of about 40 msec, the pitch is detected by adding two scoring sections subsequent to the scoring section.

  The acoustic characteristic information processing means 32 acquires a scoring result from the scoring means 28, and based on the scoring result, as shown in FIGS. 4A and 4B, the volume of the acoustic signal for frequency characteristic measurement is measured by frequency characteristic measurement. The pitch of the scoring section Sd smaller than the predetermined value α by comparison with the volume Lr of the reference data for noise is specified as the dip frequency Fd, and the volume of the acoustic signal for frequency characteristic measurement is compared with the volume Lr of the reference data for frequency characteristic measurement Then, the pitch of the scoring section Sp larger than the predetermined value β is specified as the peak frequency Fp. FIG. 4B shows a pitch detection result by the scoring means 28. And the frequency characteristic of a karaoke song space as shown, for example in FIG.4 (C) is produced | generated and displayed on the display part 13 (S4). Note that a value such as 12 dB may be set as the value of α when specifying the dip frequency Fd, and a numerical value such as 3 dB may be set as the value of β when specifying the peak frequency Fp.

  Based on the dip frequency Fd and the peak frequency Fp specified by the acoustic characteristic information processing means 32, the correction value setting means 34 increases the volume by a predetermined amount for the dip frequency Fd and increases the volume for the peak frequency Fp. A setting for quantitative reduction is performed to control the equalizer of the mixing amplifier 14 (S5). As the equalizer, for example, a multi-stage parametric equalizer as disclosed in Patent Document 1 may be configured in the mixing amplifier 14 which is a digital mixer.

  Next, FIG. 5 shows a partial block diagram regarding another measurement of frequency characteristics of the karaoke singing space according to the present invention, and FIG. 6 shows an explanatory diagram of the measurement data in FIG. In FIG. 5, the karaoke apparatus 11 is configured by configuring the playback means 25 of FIG. 1 with a music performance control unit 61 and a sound source 62. The music performance control unit 61 includes, for example, a sequence program, and drives a sound source (synthesizer) 62 according to the note data extracted from the music DB 51 with the music ID. The output of the sound source 62 is output to the mixing amplifier 14 as a performance signal. Is done.

  In this case, the music DB 51 of the storage unit 30 stores performance information data (MIDI data) for generating musical tones of each pitch for each semitone in the measurement karaoke performance data (song B). Corresponding frequency characteristic measurement reference data is stored in the reference DB 53 in association with the music B.

  The karaoke performance data for measurement (music B) is MIDI data for generating a musical tone for each semitone from the lowest pitch (A0) to the highest pitch (C8) of the piano keyboard as shown in FIG. 6 (A), for example. Assuming that the pitches of 88 musical sounds over 22 seconds are tempoed by one note 120, each note is played as an eighth note and at a constant volume. The timbre used is preferably a timbre close to a sine wave (small harmonic component).

  The reference data for frequency characteristic measurement corresponding to the music B corresponds to the above-described measurement karaoke performance data (music B), for example, as shown in FIG. And reference data having a reference volume of a predetermined constant value (Lr). If the scoring section is 15 msec for the music B (22 seconds), the scoring process is about 1,467 sections.

  In the measurement mode, the karaoke performance data for measurement (music B) is registered in the reservation queue 41 of the RAM 23.

  FIG. 7 shows a flowchart relating to another measurement of the frequency characteristic of the karaoke singing space according to the present invention, and FIG. 8 shows an explanatory diagram of the frequency characteristic measurement of FIG. First, when the karaoke apparatus 12 is started up and the measurement mode for obtaining the frequency characteristics of the karaoke singing space is set by the operator, the mode switching means 31 sets the mixing amplifier 14 to the measurement mode. The position of the microphone 15 is the singing position as described above.

  Therefore, when measurement karaoke performance data (music B) as MIDI data is registered in the reservation queue 41 in accordance with the measurement mode by switching the mode switching means 31, the music B is read from the music DB and music is stored. The performance controller 61 sends the sound to the sound source 62 as a sound signal for each sound to the mixing amplifier 14 to emit sound from the speaker 16 (S11). The microphone 15 collects the measurement acoustic signal emitted from the speaker 16 by reproducing the measurement karaoke performance data (music B). The collected acoustic signal for measurement is input to the mixing amplifier 14, A / D converted, and sent to the scoring means 28 of the karaoke main body 12. In the mixing processing by the mixing amplifier 14, the measurement acoustic signal is mixed depending on the measurement mode. The level is controlled to zero. That is, the measurement acoustic signal passes through the mixing amplifier, is A / D converted, and is input to the scoring means 28 (S12).

  In the scoring means 28, the A / D converted frequency characteristic measurement acoustic signal is acquired, and the frequency characteristic measurement reference data of the music B is read from the reference DB 53, and the frequency characteristic is measured for each scoring section (for example, 15 msec). The pitch and volume of the measurement acoustic signal are detected and scored in comparison with the volume of each pitch of the corresponding frequency characteristic measurement reference data (S13). The scoring results are shown in FIGS. 8 (A) and (B), for example.

  The acoustic characteristic information processing means 32 obtains a scoring result from the scoring means 28, and based on the scoring result, as shown in FIGS. 8A and 8B, the volume of the acoustic signal for frequency characteristic measurement is measured by frequency characteristic measurement. The pitch of the scoring section Sd smaller than the predetermined value α by comparison with the volume Lr of the reference data for noise is specified as the dip frequency Fd, and the volume of the acoustic signal for frequency characteristic measurement is compared with the volume Lr of the reference data for frequency characteristic measurement Then, the pitch of the scoring section Sp larger than the predetermined value β is specified as the peak frequency. FIG. 8B shows the pitch detection result by the scoring means 28. And the frequency characteristic of karaoke song space as shown, for example in FIG.8 (C) is produced | generated and displayed on the display part 13 (S14). The relationship between each pitch and the frequency (Hz) is uniquely determined by master tuning (for example, “A4 = 440 Hz”, which is most common) of the tone generation means (synthesizer). Therefore, each reference pitch of the frequency characteristic measurement reference data is determined based on the master tuning information set in the measurement karaoke performance data.

  Based on the dip frequency Fd and the peak frequency Fp specified by the acoustic characteristic information processing means 32, the correction value setting means 34 increases the volume by a predetermined amount for the dip frequency Fd and increases the volume for the peak frequency Fp. A setting for quantitative reduction is performed to control the equalizer of the mixing amplifier 14 (S15).

  Thus, in measuring the frequency characteristics of the karaoke singing space, the karaoke performance function, sound emission function, sound collection function and scoring function that the karaoke device exists can be used as they are, and hardware resources such as test sound sources and oscilloscopes can be used. Without being used, the acoustic characteristics of the karaoke singing space can be measured easily and inexpensively.

  The karaoke apparatus provided with the acoustic characteristic measuring function of the karaoke singing space 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 Playback means 28 Scoring means 30 Storage part 31 Mode switching means 32 Acoustic characteristic information processing means 33 Volume correction setting means 61 Music performance control part 62 Sound source

Claims (7)

A karaoke apparatus that performs karaoke performance data of a predetermined music and performs scoring in comparison with at least pitch and volume for each predetermined scoring section based on corresponding reference data for singing by a singer,
The karaoke performance data for performing the karaoke performance and the reference data for scoring the singing by the singer according to the karaoke performance are stored in association with each other, and the frequency characteristics for measuring the frequency characteristics of the karaoke singing space Karaoke performance data for measurement for generating a sound signal for measurement, and storage means for storing reference data for frequency characteristic measurement for scoring by comparing pitch and volume with the sound signal for frequency characteristic measurement ,
Reproducing means for reproducing the karaoke performance data to generate a performance sound signal, and at the time of measuring the frequency characteristic of the karaoke singing space, reproducing the stored karaoke performance data for measurement to generate the frequency characteristic measurement sound signal; ,
The performance sound signal for singing generated by the reproduction means and the singing sound signal of the singer are emitted, and only the frequency characteristic measurement acoustic signal generated by the reproduction means at the time of measuring the frequency characteristic of the karaoke singing space is used. Sound emission means for emitting sound,
Sound collecting means for collecting the singing sound signal of the singer and collecting the emitted sound signal for frequency characteristic measurement,
In addition to detecting the pitch and volume from the singing sound signal by the singer and performing the scoring process based on the stored reference data, the sound is emitted from the sound emitting means when measuring the frequency characteristics of the karaoke singing space. Scoring means for detecting the pitch and volume from the frequency characteristic measurement acoustic signal collected by the sound collection means and performing scoring processing in each scoring section based on the stored frequency characteristic measurement reference data;
Based on a scoring result for the frequency characteristic measurement acoustic signal in the scoring means, a pitch corresponding to a scoring section in which the volume of the frequency characteristic measurement acoustic signal is smaller than the volume of the corresponding frequency characteristic measurement reference data by a predetermined value or more. Identified as the dip frequency of the karaoke singing space, and identified as the peak frequency of the karaoke singing space, the pitch corresponding to the scoring section that is greater than the volume of the frequency characteristic measuring reference data by the volume of the frequency characteristic measuring acoustic signal Acoustic characteristic information processing means for
A karaoke apparatus equipped with a function for measuring acoustic characteristics of a karaoke singing space.   2. The karaoke apparatus according to claim 1, wherein the sound collecting means is a microphone installed at a singing position of the karaoke singing space, and collects a sound signal for frequency characteristic measurement emitted at the singing position. A karaoke apparatus having a function for measuring acoustic characteristics of a karaoke singing space.   3. The karaoke apparatus according to claim 1, wherein the karaoke performance data for measurement is an audio signal by a sine wave swept from a low frequency to a high frequency within a predetermined frequency range. Karaoke device equipped with a function for measuring the acoustic characteristics of a karaoke singing space.   3. The karaoke apparatus according to claim 1, wherein the measurement karaoke performance data is performance information data for generating a musical tone of each pitch for each semitone. Karaoke device with a measurement function.   5. The karaoke apparatus according to claim 1, wherein the acoustic characteristic information processing unit displays frequency characteristic data including the specified dip frequency and peak frequency of the karaoke singing space on a display unit. A karaoke apparatus having a function for measuring acoustic characteristics of a karaoke singing space. A karaoke apparatus according to at least one of claims 1 to 4,
The sound emitting means includes an equalizer that corrects frequency characteristics of a sound signal to be emitted,
A function for measuring acoustic characteristics of a karaoke singing space, comprising volume correction setting means for correcting the volume of singing at a dip frequency and a peak frequency specified by the acoustic characteristic information processing means with respect to the equalizer of the sound emitting means. Karaoke device equipped with. A karaoke apparatus according to at least one of claims 1 to 4,
A first mode in which a singer sings in accordance with a performance sound signal generated by reproducing the karaoke performance data by the reproduction means, and a mode for measuring frequency characteristics of the karaoke singing space, which is measured by the reproduction means. Mode switching means for switching between the second mode of reproducing the karaoke performance data for use and generating the acoustic signal for frequency characteristic measurement,
In the first mode, the sound emitting means mixes and emits the performance sound signal generated by the reproducing means and the singing sound signal of the singer collected by the sound collecting means, In the second mode, only the acoustic signal for frequency characteristic measurement generated by the reproducing means is emitted, and the acoustic signal collected by the sound collecting means is not mixed. Karaoke device with functions.

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