JPH08263076A - Singing training device - Google Patents

Abstract

PURPOSE: To objectively and easily recognize the difference between singings and to efficiently conduct a singing training by reporting the musical scales of the singing of a model singing and a trainee's singing by a reporting means and letting the trainee to clearly recognize the range of note of the respective singings. CONSTITUTION: This device consists of a first and second singing interval detecting means 14 and 15 which detect the interval information of a singing and a first and second range of note detecting means 16 and 17 which detect the range of note information from the interval information outputted from the means 14 and 15, a signal superimposing means 18 and a monitor 20. The means 18 superimposes the range of note information outputted by the means 16 and 17 to video signals and the trainee recognizes the range of note of the model singing and his own singing by the screen display of the monitor 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a singing practice device that handles singing signals such as karaoke.

[0002]

2. Description of the Related Art In recent years, compact discs, video tapes and video discs on which audio signals for karaoke are recorded have been used as media used for performing karaoke. It is general that the model singing is recorded separately from the voice signal for. This model song is used as a model for karaoke and recorded for the purpose of using it as a training material for karaoke.

The use of a model song by a conventional song practice device such as a karaoke machine will be described below with reference to FIG.

FIG. 16 is a block diagram showing the structure of a conventional song practice apparatus. In FIG. 16, 160 is a first song input end, 161 is a second song input end, and 162 is a second song input end.
The amplitude adjuster that adjusts the amplitude of the song input to the song input terminal 161 of 163, the adder 163 that adds the song output from the amplitude adjuster 162 to the song that is input to the first song input terminal 160, It is a song output end that outputs the output song of the adder 163.

The operation of using the model song having the above-described structure will be described. First, the model song is input to the amplitude adjuster 162 via the second song input terminal 161, and the amplitude is adjusted by the singer. The model song whose amplitude has been adjusted is added to the song of the singer input to the first song input end by the adder 163 and output from the song output end 164.

With the above operation, in the karaoke machine including the conventional singing practice device shown in FIG. 16, the singer can listen to the model singing with his / her singing at a volume that is easy to hear by the amplitude adjuster 162. . Then, the singer can practice the karaoke using the model song as a model by listening to and comparing the own song and the model song.

[0007]

However, in the above-mentioned conventional configuration, the comparison between the model song and the song of the singer is a result of the singer listening to the output song and subjectively interpreting the difference between the songs. Is what you get. If the singer has a good listening ability, he / she can understand the difference between the model singing and his own singing. There is a problem that evaluation is difficult to perform, and there is a drawback that the difference in singing can be grasped only from the subjective viewpoint of the singer. Also, information about the range of the song,
There was a problem that it was not possible to know whether the song was appropriate for me (whether it was a song that was easy to sing).

The present invention solves the above-mentioned problems of the prior art, and it is possible to objectively confirm the range information of a song and the pitch information in which a shift is recognized, and whether accurate vocalization can be performed with reference to these information. The purpose is to provide a singing practice device that can be confirmed.

[0009]

In order to achieve this object, the singing practice apparatus of the present invention uses the first and second singing pitch detecting means for detecting the pitch information of the singing and the inputted pitch information. It is composed of first and second tone range detecting means for extracting tone range information indicating the tone range and the lowest tone range and detecting tone range information, and notifying means for notifying the detected tone range information.

The first and second song pitch detecting means for detecting the pitch information of the song, the calculating means for calculating the difference between the two input pitch information, the storing means, and the notifying means. ing.

Furthermore, a microphone, a reference sound output means, and a speaker are provided.

[0012]

With this configuration, the first and second range detecting means output respective range information from the range information detected by the first and second singing range detecting means, and the notifying means notifies this. Alternatively, the calculation means is the first and second
The difference between the pitch information output by the singing pitch detection means of
The storage means updates the storage information in accordance with the pitch information output by the second singing pitch detection means and the output of the calculation means, and the notifying means notifies the storage information of the storage means, or the microphone is the first one. The notification range is input to the singing pitch detecting means, and the notifying means also notifies the reference sound information output by the reference sound outputting means and the pitch information output by the first singing pitch detecting means. It is possible to confirm the information, or it is possible to confirm the pitch information in which the pitch deviation is recognized, and further it is possible to confirm whether or not the correct utterance can be made while confirming the information.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the first embodiment of the present invention. In FIG. 1, reference numeral 1 is a disc on which a video signal or audio signal is modulated and recorded, 2 is a motor for driving the disc 1, 3 is a pickup for reading the signal recorded on the disc 1, and 4 is a control of the motor 2. A motor driver, 5 is a pickup driver for controlling the pickup 3, 6 is a video signal demodulating means for demodulating a video signal from a signal read by the pickup 3, and 7 is a video signal output by the video signal demodulating means 6 according to a reference clock signal. Time axis correcting means for correcting the time axis, 8 is an audio signal demodulating means for demodulating an audio signal from the signal read by the pickup 3, and 9 and 10 are first audio signals for outputting the audio signals output by the audio signal demodulating means 8, respectively. Audio signal output end and second
2 is a voice signal output terminal, 11 is a code signal detecting means for detecting a code signal indicating a recorded content from a signal output by the pickup 3, and 12 is a voice signal demodulating means 8 outputs 2
Model song extracting means for extracting a model song from one voice signal, 13 is a song signal input end to which a microphone or the like is connected and the song signal of the singer is input, and 14 and 15 are the first to detect pitch information from the voice signal. Singing pitch detecting means and second singing pitch detecting means, 16 is first singing pitch detecting means 14
The first pitch range detecting means for detecting the pitch range information from the pitch information outputted by the reference numeral 17, 17 is the second pitch range detecting means for detecting the pitch range information from the pitch information outputted by the second singing pitch detecting means 15, and 18 is the time axis Signal superimposing means for superimposing a specific signal on the video signal output by the correcting means 7 based on the sound range information output by the first sound range detecting means 16 and the second sound range detecting means 17, and 19 is a video signal output terminal. , 20 is a receiver, 21 is a motor driver 4, a pickup driver 5, a model singing extraction means 12, a first sound range detection means 16 and a second sound range detection means 17, and a code signal from the code signal detection means 11. It is a receiving micro computer (hereinafter abbreviated as microcomputer).

The operation of the singing practice device configured as described above will be described. First, the control for reproducing a signal from the disc 1 will be described. The disc 1 is rotated by a motor 2 and a signal is read by a pickup 3. If the disc 1 is an optical type such as a compact disc or a laser disc, the pickup 3 is composed of a laser, an optical lens, an actuator for driving the optical lens, and a photodetector, and reads and outputs pit information on the disc. Anything will do. In addition, the motor 2 and the pickup 3 are
Motor driver 4 that determines control based on control information from
And pickup driver 5, respectively.
Here, since the code signal detected by the code signal detecting means 11 is input to the microcomputer 21, the microcomputer 21
Can recognize the unique information and the reproduction position of the disc 1 by judging the code signal. By controlling the motor driver 4 and the pickup driver 5 with this information, the reproduction of the disc 1 is optimized or a specific reproduction is performed. You can replay the part. Further, it is possible to control the start and stop of the reproduction of the disc 1. The code signal detecting means 11 may output a sub-code signal if the disc 1 is a compact disc and a 24-bit code signal if the disc 1 is a laser disc. As described above, the signal is read from the disk 1 and the microcomputer 21
Can recognize the reproduction position of the disc 1 and control the reproduction state of the disc 1.

Next, the video signal demodulation means 6 demodulates the video signal from the signal output from the pickup 3. Disk 1
If is a laser disk, the video signal is FM-modulated and recorded, and therefore the video signal demodulation means 6 may be provided with a band-pass filter for extracting the video signal and a circuit for FM demodulation. Since the time axis of the video signal output from the video signal demodulating means 6 is not normal due to the eccentric center of rotation of the disk 1, the time axis correcting means 7 corrects the time axis. Done. The time axis correction unit 7 includes a reference clock and a memory, sequentially stores the video signal in the memory, and sequentially outputs the video signals stored in the memory in synchronization with the reference clock, thereby correcting the time axis of the video signal. To do. If the disc 1 is a disc recorded in a format not containing a video signal, for example, a compact disc, the video signal demodulating means 6 and the time axis correcting means 7 are not always necessary.

Similarly, the audio signal demodulating means 8 demodulates the audio signal from the signal output from the pickup 3. Here, if the disc 1 is a laser disc, an analog audio signal is output, and if the disc 1 is a compact disc 1, a signal obtained by converting a digital audio signal into an analog audio signal is output. Then, the demodulated audio signal is output from the first audio signal output terminal 9 and the second audio signal output terminal 10.

Next, the operation of the model song extracting means 12 will be described. First, a case where the disc 1 is a laser disc in which sound is recorded in a so-called so-called "sound form" will be described. In this case, the accompaniment is recorded in the left channel of the analog voice, and the same accompaniment and model song as in the left channel are recorded in the right channel. Therefore, if the signal of the left channel is subtracted from the signal of the right channel, the accompaniment signal is canceled and the model singing can be extracted.

Depending on the disc, the accompaniment levels included in both channels may not match.
When subtracting, it is necessary to adjust the gain of the signal of the left channel to be subtracted. In this process, if the result of subtracting the left channel from the right channel is 0 while the prelude of the song is being reproduced, that is, the part that does not include the model song in the right channel is being reproduced. , The accompaniment will be deleted from the right channel, and only the model song can be extracted. Here, the fact that the prelude of the tune is being reproduced can be recognized by the microcomputer 21 from the code signal detected by the code signal detecting means 11. Based on this recognition, the microcomputer 21 controls the model singing extraction means 12,
The gain adjustment for the above-mentioned left channel can be realized, and the model song extracting unit 12 can extract the model song. If the disc 1 is a compact disc in which only the model song is recorded in the right channel,
The model song can be extracted by outputting only the signal of the right channel without executing the subtraction processing of the left channel.

Next, the first singing pitch detecting means 14 and the second singing pitch detecting means 14
The operation of the song pitch detecting means 15 will be described. These two song pitch detecting means perform exactly the same operation. The model song output by the model song extracting unit 12 is input to the first song voice detecting unit 14, and the song signal of the singer input from the song signal input terminal 13 is input to the second song pitch detecting unit 15. Has been done. Here, the pitch information is detected along the equal temperament scale that is generally used as the pitch scale. As is well known, in the equal temperament scale, if the frequency of a certain scale is multiplied by the 12th root of 2, it becomes a semitone higher scale and if it is divided, it becomes a semitone lower scale. From this relationship, if A = 440 Hz, for example, the frequencies of all the scales are determined. Since the scale and the frequency have a one-to-one correspondence, the scale is determined by finding the frequency, and the pitch information is detected. Further, since the frequency has a relation of the reciprocal of the period, if the period is obtained, the pitch information is similarly detected.

The operation of the first song pitch detecting means 14 and the second song pitch detecting means 15 will be described with reference to the drawings. FIG. 2 is a block diagram showing the configuration of two song pitch detecting means. In FIG. 2, reference numeral 21 is a signal input end for inputting a singing signal to be a pitch detection target, 22 is a high-pass filter for removing a DC component of the singing signal input from the signal input end 21, and 23 is a high-pass filter 22 for output. Low-pass filter that attenuates high-frequency components of signal, 24
Is a zero-cross detection circuit that outputs a measurement result obtained by measuring a period in which the voltage of the signal output by the low-pass filter 23 matches 0 V, 25 is a memory that stores the measurement result output by the zero-cross detection circuit 24, and 26 is a zero-cross detection circuit 2
4 is a period measurement circuit for comparing the measurement result stored in the memory 25 with the measurement result stored in the memory 25, 27 is a pitch conversion circuit for converting the period measurement data output by the period measurement circuit 26 into pitch information, and 28 is a pitch conversion circuit. It is a pitch information output terminal for outputting the pitch information output by the pitch conversion circuit 27.

The operation of the singing pitch detecting means configured as described above will be described. First, the singing signal is input to the signal input terminal 21 and passes through the high pass filter 22. The high-pass filter 22 removes the DC component.
This processing makes the signal symmetrical with respect to 0V. next,
The signal passed through the high-pass filter 22 passes through the low-pass filter 23, and the high frequency component is attenuated. The cut-off characteristic of the low-pass filter 23 is determined by the frequency of the scale that is the target of pitch detection. 80 for normal singing
Since it suffices to target frequencies above about Hz, if the cutoff frequency is set to about 80 Hz, attenuation characteristics can be obtained for frequencies above this. However, considering that this attenuation characteristic also works for the fundamental frequency and the detection operation must be ensured even for a high frequency, the first-order characteristic is appropriate for the cutoff slope. By this processing, the harmonic component contained in the signal is attenuated and the fundamental frequency component of the signal is emphasized. The same effect can be obtained even if the connection between the high-pass filter 22 and the low-pass filter 23 is reversed.

The signal passed through the high-pass filter 22 and the low-pass filter 23 is the zero-cross detection circuit 2
4 is input and the period when the voltage matches 0 V is measured. Here, the waveform of the input signal for one cycle and the measurement result are shown in FIG. In FIG. 3, 30 is the waveform of the input signal. In the input signal 30, the waveform from t1 to t2 and the waveform from t4 to t5 are the fundamental wave components of the signal, and t
The waveform from 2 to t4 is the first harmonic component. The half-wave voltage value of the fundamental wave component is V1, and the half-wave voltage value of the harmonic component is V2. Since the DC component of the input signal 30 has been removed by the high-pass filter 22,
Since the positive voltage portion and the negative voltage portion of the waveform are symmetrical with respect to 0 V and the harmonic component is attenuated by the low pass filter 23, | V1 |> | V2 |.

In the zero-cross detection circuit 24, a period in which the voltage of the input signal coincides with 0V, that is, in FIG. 3, a time T1 from t1 to t2, a time T2 from t2 to t3,
The time T3 from t3 to t4 and the time T4 from t4 to t5 are measured. Where t1 to t2 and t4 to t
Since 5 is a waveform showing the same frequency, T1 = T4
And similarly T2 = T3. Also, T1> T2. This time measurement can be achieved by using a comparator that compares the voltage of the input signal with 0V and a counter that determines the operation based on the result of this comparator and that operates with a frequency clock that is much higher than the frequency of the input signal. it can. In the case of FIG. 3, the measurement result thus obtained is output once as the latest measurement result at times t1, t2, t3, t4, and t5. If you do this,
On the side receiving the measurement results, it is possible to obtain an effect that the measurement results can be processed without time delay and the measurement results are not duplicated.

Next, the operation of the memory 25 shown in FIG. 2 will be described with reference to the drawing. FIG. 4 is a block diagram showing the structure of the memory. In FIG. 4, 40 is a data input terminal, 41 is a data output terminal, 42 is a data read determination signal input terminal, 43 is a data bus, and 44 to 48 are first to fifth data storage terminals for storing data via the data bus 43. The data storage circuit 49 manages the data input from the data input terminal 40, the data output to the data output terminal 41, the data read determination signal input terminal 42, and the data handled by the data bus 43 and the read determination signal. It is a decoder.

The operation of the memory configured as described above will be described. First, the decoder 49 can read arbitrary data from the first to fifth storage locations or store it in any storage location. Further, the decoder 49 reads the data stored in the first to fifth storage locations via the data bus 43 according to the read determination signal input from the data read determination signal input end 42, and outputs it from the data output end 41. To do. When new data is input from the data input terminal 40, the decoder 4
9 stores the data stored in the fourth storage location 47 in the fifth storage location 48, and similarly changes the storage location of the data stored in the first storage location 44 to the third storage location 47. Then, the new data input to the data input terminal 40 is stored in the first storage location 44. In this way, the decoder 49 updates the data stored in the first to fifth storage locations.

In the singing pitch detecting means, the measurement result output from the zero cross detection circuit 24 is input to the data input terminal 40. Therefore, the memory 25 as described above
By this operation, the measurement results output by the zero-cross detection circuit 24 are sequentially stored. In the case of the waveform and the measurement result shown in FIG. 3, when the latest measurement result T4 is obtained at time t5, the measurement result T3 obtained at time t4 is stored in the second storage location 45, Similarly, T2 is stored in the third storage location 46, T1 is stored in the fourth storage location, and the measurement result T4 is stored in the first storage location 44. By such an operation, the circuit to which the data output terminal 41 and the data read determination signal input terminal 42 are connected can arbitrarily read the old and new measurement results of the zero-cross detection circuit 24.

Although there are five storage locations in the example of FIG. 4, it is sufficient to prepare as many storage locations as required by the circuit that uses the data output from the data output terminal 41.

Next, the operation of the cycle measuring circuit 26 shown in FIG. 2 will be described. The latest measurement result output from the zero-cross detection circuit 24 and the past measurement result output from the memory 25 are input to the cycle measurement circuit 26, and the read determination data for determining the data to be read out from the memory 25 and the cycle measurement result are input. Is output. The cycle measuring circuit 26 measures the basic cycle of the signal input to the signal input terminal 20 from the temporal flow of the measurement result output by the zero-cross detection circuit 24.

First, the past measurement result is compared with the latest measurement result measured by the zero-cross detection circuit 24. This past result can be obtained from the memory 25 by giving the read determination data to the memory 25. As is clear from the waveform 30 shown in FIG. 3, the zero cross detection circuit 24
Is a half-wave portion of the waveform, and the measurement results of the positive voltage portion and the negative voltage portion of the waveform appear alternately. Time t5
In, the procedure for obtaining the basic period based on T4 obtained as the latest measurement result will be described. First, the measurement results of the adjacent waveforms, that is, the measurement result T3 is stored in the memory 2
Start from 5. This is compared with T4, and if they are approximate to each other, the result of T3 + T4 is determined as the basic period. However, if they are not close to each other, the measurement result that is in phase with T3 and one older than T3, that is, T1 is compared with T4. If they are approximately similar, T1 + T2 + T3 + T4 is determined as the basic period. If they are not similar, a similar comparison is performed using the data in the memory 25 to determine the basic period. In the case of FIG. 3, since T4 = T1, the basic period is T1 +
It is T2 + T3 + T4. This basic cycle data is output as cycle measurement data. Such a comparison process can be easily realized by using a microcomputer. In the case of using a microcomputer, if the RAM of the microcomputer is used as the memory 25, the effect that the processing can be efficiently executed with a simple configuration can be obtained.

Next, the operation of the pitch converting circuit 27 shown in FIG. 2 will be described. The pitch conversion circuit 27 converts the input fundamental cycle data into pitch information and outputs it. Here, a case where the pitch information is converted to equal temperament will be described. This conversion process will be described. As mentioned above, in the equal temperament, a difference of a semitone is obtained by multiplying or dividing the 12th root of 2. The pitch information is determined from this relationship. Therefore, the conversion of the pitch information according to the equal temperament is log (Tref / T), where Tref is the reference cycle and T is the cycle to be converted.
/ Log2. Here, logX is a logarithmic transformation (common logarithm) of X with a base of 10.

The pitch information determined by the pitch conversion circuit 27 is output from the pitch information output terminal 28.

As described above, the first song pitch detecting means 1
The fourth and second singing pitch detecting means 15 operate.

In the above operation, the first song pitch detecting means 14 and the second song pitch detecting means 15 output the pitch information each time the zero cross detecting circuit 24 detects the zero cross. , If the detected pitch information is stored and the pitch information is output at regular intervals, the detected amount of pitch information is always constant over time, so it is possible to collect pitch information at regular intervals. The advantage that the pitch information can be notified at regular intervals can be obtained.

Next, the first range detecting means 1 shown in FIG.
6 and the operation of the second range detector 17 will be described.
The two tone range detecting means operate in exactly the same manner. The range detecting means executes a range detecting process according to the range information management signal output from the microcomputer 21, based on the range information output from the singing range detecting means. Since the pitch range is the range from the lowest pitch to the highest pitch, it is possible to detect the pitch range by detecting the highest pitch information and the lowest pitch information among the pitch information output by the singing pitch detection means. . Therefore, the range information obtained by the range detection processing is composed of range upper limit information indicating the highest range information and range lower limit information indicating the lowest range. The operation of the range detecting means will be described with reference to the drawings.

FIG. 5 is a flow chart showing the range detection determination process of the range detecting means. In FIG. 5, 50 is a range information reset determination process, 51 is a range information reset process, 52 is a motion determination process, 53 is a range information determination process, 5
4 is a range information initialization process, 55 is a range upper limit information determination process, 56 is a range upper limit information update process, 57 is a range lower limit information determination process, 58 is a range lower limit information update process, 59 is a range information number count process, and 60 is a range information count process. A pitch information number determination step, and 61 is a range information output step.

First, in the range information reset determination step 50, it is determined whether or not to reset the range information and the number of range information. In the case of resetting, the range information and the number of range information are reset in the range information reset step 51. Then, in the motion determining step 52, it is determined whether or not the range detection operation is performed, and when the range detection operation is not performed, the process ends. Resetting the range information is a process for newly starting the range detection, and not performing the range detection operation is a process for retaining the range information already detected. Since the range is roughly determined by the key of the song and the song of a man or a woman, detection of the range is usually meaningless without detecting one song or a part of it. It is necessary to perform a reset process and hold range information.

A range information management signal input from the microcomputer 21 is used as information for determining the reset and range detection operation. The microcomputer 21 determines the code signal output by the code signal detecting means 13, and the disc 1
When the playback position of is moved to a new chapter or track, it is determined that the playback of a new song has started, and a range information management signal is output. The microcomputer 21 can of course output the range information management signal by other information such as key input instead of the code signal.

Next, the range information judging step 53 will be described. The range information determination step 53 determines whether or not certain range information has already been requested. Then, when the range information is not obtained, that is, when the range information is reset in the range information reset step 51, the range information initialization step 54 is performed, and the range information is initialized. When the range information is reset, there is no range information for comparing the range information with the range information in the range upper limit information determination step 55 and the range lower limit information determination step 57 described later. The range information initializing step 54 prepares the first range information for this comparison.

If the range information has been obtained by the range information initialization step 54, the process proceeds to the range information updating process.
First, the range upper limit information determining step 55 compares the range information with the range upper limit information, and when the range information indicates a range higher than the range upper limit information, the range information is used as the range upper limit information.
The process proceeds to the range upper limit information updating step 56, and the range upper limit information is updated with the range information. Similarly, the range lower limit information is processed by the range lower limit information determining step 57 and the range lower limit information updating step 58.

The range information is updated by the processing relating to the range information and the pitch information as described above. Then, the number of pieces of obtained pitch information is counted in the pitch information counting step 59. The counted result is judged in the pitch information number judgment step 60, and if the pitch information number equal to or more than a certain value is inputted, the range information output step 61 is carried out, and the pitch range information is outputted. Here, the pitch information count step 59 and the pitch information number determination step 60 are not always necessary. But,
The pitch range is information for a song over a certain period of time, and the accuracy can be improved by detecting it from a plurality (as many as possible) of pitch information. Therefore, by outputting the range information after the range information is detected based on the pitch information of a certain level or more, it is possible to perform the range detection with high accuracy. If the determination based on the number of pitch information is not performed, the pitch information count step 59 and the pitch information number determination step 60 may be omitted and the pitch information output step 61 may be executed.

The first tone range detecting means 16 and the second tone range detecting means 17 are constituted by the above stroke process.
This process is executed every time the first pitch detecting means 14 or the second pitch detecting means 15 outputs new pitch information and is input to the first pitch detecting means 16 or the second pitch detecting means 17. .

Next, the operation of the signal superimposing means 18 of FIG. 1 will be described. The signal superimposing means 18 has a video signal output terminal 19
It plays a role as an informing means together with the image receiver connected via. The signal superimposing means 18 superimposes a specific signal on the input video signal based on the sound range information output by the first sound range detecting means 16 and the second sound range detecting means 17. The operation of the signal superimposing means 18 will be described with reference to the drawings.

FIG. 6 is a block diagram showing the circuit configuration of the signal superimposing means 18. In FIG. 6, 62 is a first sound range information input end, 63 is a second sound range information input end, 64 is a video signal input end, and 65 is a video signal input from the video signal input end 64 to separate the sync signal from the video signal. A synchronizing signal separating circuit for outputting, 66 a superimposing signal generating circuit for outputting a superimposing signal to be superposed on a video signal, and 67 a first range information input terminal 62.
The address decoder 67 determines the display position of the signal output from the superimposition signal generation circuit 66 with respect to the video signal from the synchronization signal output from the second tone range information input terminal 63 and the synchronization separation circuit 65, and 68 is an address decoder 67. , A superimposition signal generation circuit 66 for the video signal input to the video signal input terminal 64.
A switch for superimposing the signal output by the switch 69 is a signal output terminal for outputting the video signal output by the switch 68.

The signal superimposing means 18 configured as described above
The operation will be described with reference to FIGS. 1 and 6.
First, the first range detector 16 and the second range detector 1
The range information output by 7 is input to the first range information input end 62 and the second range information input end 63, respectively, and is input to the address decoder 67. Also, the video signal input terminal 6
The video signal input from 4 is input to the sync separation circuit 65, and the sync signal is separated. The separated sync signal is also input to the address decoder 67. The address decoder 67 can specify the display position on the screen of the video signal input to the video signal input terminal 64 by the synchronization signal.

Next, the address decoder 67 determines the position to be displayed on the screen of the character, and controls the switch 68 according to the position to display based on the sync signal. The content of the character is determined by the range information input from the first range information input end 62 and the second range information input end 63. By determining the shape of the character and the display position on the screen according to the content of the range information, the range information is replaced with the position on the screen so that it can be recognized on the screen.

The switch 68 is controlled by the determination of the address decoder 67, and the signal output from the superimposition signal generation circuit 66 is superposed on the video signal input from the video signal input terminal 64. The superimposed video signal is output from the signal output terminal 69, and the video signal output terminal 1
Since it is connected to the receiver 20 via 9, the singer can recognize the range information by the display position of the character on the screen of the receiver 20.

FIG. 7 shows an example of a screen display by the video signal output by the signal superimposing means 18. In FIG. 7, 70 is a keyboard display for confirming the pitch position on the screen, 71 is a first character display showing the horizontal position of the musical range display of the model song, 7
2 is a second character display showing the horizontal position of the singer's range display, 73 is a first range display showing the model singing range, 74
Is a second range display showing the range of the singer.

The display contents of FIG. 7 will be described. First,
The keyboard display 70 is a display serving as an index for expressing a difference in pitch in the horizontal direction. The display displayed in the lower direction of the keyboard display 70 means that the pitch of the keyboard of the keyboard display 70 displayed in the vertical direction is the same. Next, the first range display 73 is displayed below the keyboard display 70 at the same horizontal position as the first character display 71 indicating that the range of the model song is displayed. In the example shown in FIG. 7, the first range display 73 shows that the lowest pitch and the highest pitch of the model song detected are B and D, respectively. That is, the range is 1 octave and 2 scales. Similarly, the second range indicator 74 indicates that the lowest and highest pitches detected by the singer are B and C, respectively.
Is showing. That is, the range is one octave and one scale.

In the example shown in FIG. 7, as described above, it can be clearly recognized from the respective range display displayed on the screen that the range of the singer is one scale lower than that of the model singing.

The signal output from the superimposition signal generating circuit 66 may be a color signal in consideration of the color burst phase of the video signal input from the video signal input terminal 64. In this case, not only the position but also the color of the image,
It becomes possible to display the range information. For example, if the tone range information of the model song and the tone range information of the singer are different in color, the recognition becomes clearer.

As described above, if the signal superimposing means 18 is used, the display as shown in FIG. 7 can be confirmed together with the image recorded on the disc 1, so that the reproduction of the disc 1 should be interrupted. Without, it is possible to know the range information.

Further, in this embodiment, the case where the signal indicating the character is superimposed on the video signal has been described, but the display means capable of displaying only the range information may be used as the notification means.

Furthermore, means for notifying the range information by voice can be used as the notifying means.

As described above, according to this embodiment, the first and second song pitch detecting means for detecting the pitch information of the song, and the highest pitch information and the lowest pitch information are detected from the inputted pitch information. By providing the first and second range detecting means for outputting range information and the notifying means for notifying the range information, the singer clearly recognizes the range of the model singing and his own singing by the notifying means. Therefore, it is possible to objectively and easily recognize the difference in singing and to practice singing efficiently.

The second embodiment of the present invention will be described below with reference to the drawings. FIG. 8 is a block diagram showing the configuration of a singing practice device showing a second embodiment of the present invention.
In FIG. 8, 1 is a disc on which video signals and audio signals are modulated and recorded, 2 is a motor for driving the disc 1, 3
Is a pickup for reading the signal recorded on the disc 1, 4 is a motor driver for controlling the motor 2, 5 is a pickup driver for controlling the pickup 3, and 6 is a video signal for demodulating a video signal from the signal read by the pickup 3. Demodulation means, 7 is a time axis correction means for correcting the time axis of the video signal output by the video signal demodulation means 6 according to the reference clock signal, 8 is an audio signal demodulation means for demodulating an audio signal from the signal read by the pickup 3, and 9 And 10 are a first audio signal output end and a second audio signal output end for outputting an audio signal output by the audio signal demodulation means 8, respectively, 1
Reference numeral 1 is a code signal detecting means for detecting a code signal indicating recorded contents from the signal output by the pickup 3, 12 is a model song extracting means for extracting a model song from two audio signals output by the audio signal demodulating means 8, 13 Is a singing signal input end to which a singing person's singing signal is input, and 14 and 15 are first singing pitch detecting means and second singing pitch detecting means for detecting pitch information from a voice signal, 80
Is a calculating means for calculating the difference between the pitch information output by the first song pitch detecting means 14 and the second song pitch detecting means 15, 8
Reference numeral 1 is a storage means for updating the storage information according to the calculation result output by the calculation means and the pitch information output by the second singing pitch detection means 15, and 82 is the storage means 81 for outputting the video signal output by the time axis correction means 7. Signal superimposing means for superimposing a specific signal on the basis of stored information to be stored, 19 is a video signal output end, 2
Reference numeral 0 is a receiver, 21 is a microcomputer which controls the motor driver 4, the pickup driver 5, the model song extracting means 12 and the storage means 81, and receives the code signal from the code signal detecting means 11.

The operation of the singing practice device configured as described above will be described. In FIG. 8, calculation means 80
Except for the storage means 81 and the signal superposition means 82, the operation is exactly the same as that of the first embodiment shown in FIG. 1, and the configuration is also exactly the same.

Next, the operation of the calculating means 80 will be described. The calculating means 80 calculates the difference between the pitch information output by the first singing pitch detecting means 14 and the second singing pitch detecting means 15. In order to use the model song as a reference, the pitch information output by the second song pitch detecting means 15 is subtracted from the pitch information output by the second song pitch detecting means 15, and the subtracted calculation result is output. Since the singing pitch detecting means outputs the pitch information when the pitch is detected, the computing means 80 needs to hold the last inputted pitch information. However, as described in the first embodiment, when the singing pitch detecting means outputs the pitch information at regular time intervals, if the singing pitch detecting means outputs the pitch information at the same time, There is no particular need to keep it. In this case, the calculation result output by the calculation means 80 is also output at regular intervals.

Next, the operation of the storage means 81 will be described with reference to the drawings. The storage unit 81 classifies the input data according to the value and stores the cumulative value of each classified data number. FIG. 9 is a block diagram showing the circuit configuration of the storage means 81. In FIG. 9, reference numeral 40 is a data input terminal, 41 is a data output terminal, 42 is a data read determination signal input terminal, 43 is a data bus, and 44 to 48 are first to fifth portions for storing data via the data bus 43. The data storage circuit 49 manages the data input from the data input terminal 40, the data output to the data output terminal 41, the data read determination signal input terminal 42, and the data handled by the data bus 43 and the read determination signal. A decoder, 90 is a pitch data input end for inputting pitch information output by the second singing pitch detecting means 15, and 91 is a reset signal input end for resetting the data stored in the first to fifth data storage circuits. . Except for the pitch data input terminal 90 and the reset signal input terminal 91, the circuit is exactly the same as the circuit constituting the memory 25, but the decoder 49 also has a function of incrementing data.

First, when data is input to the data input terminal 40, the decoder 49 judges this data and the pitch data input to the pitch data input terminal 90 to determine which data storage circuit data should be incremented. . Here, the data storage circuit is assigned to each fixed pitch data. Then, according to the decision, the first to the fifth
The corresponding data stored in the data storage circuit is read out via the data bus 43, the data is incremented, and the data is stored again in the same data storage circuit. By the above operation, the data stored in the first to fifth data storage circuits is incremented by the data input to the data input end 40 and the pitch data input end 90.

By the above operation, the storage means 81 classifies the calculation result of the calculation means 80 for each pitch and stores the frequency of the classification result. Since the calculator 80 calculates the pitch deviation, the storage 81 stores the constant frequency of the deviation for each pitch data.

In the example of FIG. 9, the data storage circuit has 5
In the case of the location, the storage means 81 may be provided with the necessary number of data storage circuits according to the data classification judgment.

Then, the data read determination signal input terminal 4
The decoder 49 reads data from the first to fifth data storage circuits and outputs the data from the data output terminal 41 in response to the data read determination signal input from 2.

Further, the reset signal input from the reset signal input terminal 91 resets the data stored in the first to fifth data storage circuits. This reset signal is output by the microcomputer 21, but in the same manner as in the first embodiment, the microcomputer 21 performs the range information reset processing on the first range detecting means 16 and the second range detecting means 17. For the reason, reset processing is performed. That is, in the storage means 81, the data stored in the first to fifth data storage circuits is used as the data for one song or a part thereof.

However, when displaying the frequency distribution of pitch deviations for a plurality of songs, it is not necessary to execute the reset process.

Next, the signal superposing means 82 will be described. The signal superimposing means 82 has only one range information input end of the signal superimposing means 18 in the first embodiment, and the data output from the data output end 41 of the storage means 81 is connected to this input end. Is different. The other contents are exactly the same as the signal superimposing means 18.

FIG. 10 shows an example of screen display by the signal superimposing means 82. In FIG. 10, 70 is a keyboard display, 100
Is a frequency display in which the number of times that the pitch of the singer has deviated from the pitch of the model song is displayed in a frequency distribution for each scale. The keyboard display 70 has exactly the same contents as in the first embodiment. The frequency display 100 is a frequency display of the data stored in the data storage circuit in the storage means. In this example, since the number of data storage circuits required is the number corresponding to the keyboard display 70, 20 data storage circuits are required.

According to the frequency display 100 shown in FIG. 10,
The 7th E note from the lower scale in the keyboard display 70 has the highest frequency. In other words, it indicates that the pitch deviation occurred most in this scale.

According to the screen display as shown in FIG. 10,
The scale in which the pitch shift occurs can be clearly recognized on the screen display.

As in the first embodiment, the signal output from the superposition signal generation circuit 66 is a color signal,
In particular, changing the color of the scale in which a large amount of pitch deviation has occurred has the advantage of more clearly recognizing the frequency of the frequency display 100.

Further, as in the first embodiment, it is possible to use a display means capable of displaying only the frequency display 100 or a means for outputting a voice as the notification means.

As described above, according to this embodiment, the first and second song pitch detecting means for detecting the pitch information of the song, the calculating means for calculating the difference between the two pitch information, and the storing means, By providing the notifying means, the singer can clearly recognize the scale in which the deviation of his / her singing with respect to the model singing occurs by the notifying means. It is possible to practice the singing efficiently by recognizing the scale to be performed.

The third embodiment of the present invention will be described below with reference to the drawings. FIG. 11 is a block diagram showing the configuration of the third exemplary embodiment of the present invention. In FIG. 11, 1 is a disc on which a video signal and an audio signal are modulated and recorded, 2 is a motor for driving the disc 1, 3 is a pickup for reading the signal recorded on the disc 1, and 4 is a motor for controlling the motor 2. Driver 5 is pickup 3
6 is a video signal demodulating means for demodulating a video signal from the signal read by the pickup 3, and 7 is a time axis for correcting the time axis of the video signal output by the video signal demodulating means 6 by the reference clock signal. A correction means, 8 is an audio signal demodulation means for demodulating an audio signal from a signal read by the pickup 3, and 9 and 10 are a first audio signal output terminal and a second audio signal output terminal for outputting an audio signal output by the audio signal demodulation means 8, respectively. Of the voice signal, 11 is a code signal detecting means for detecting a code signal indicating the recorded contents from the signal output by the pickup 3, and 12 is a model singing signal from the two voice signals output by the voice signal demodulating means 8. Model singing extraction means, 110 is a microphone, 13
Is a singing signal input end to which a microphone 110 is connected and a singing person's singing signal is input, 14 and 15 are first singing pitch detecting means and second singing pitch detecting means for detecting pitch information from a voice signal, and 16 is A first range detecting means for detecting range information from the range information output by the first song range detecting means 14, and a second 17 for detecting range information from the range information output by the second song range detecting means 15. Range detection means, 1
Reference numeral 11 is a reference sound output means, and 112 is a reference sound output means 111.
A speaker for reproducing the reference sound output by the sound source, reference numeral 113 indicates a video signal output by the time axis correction means 7, and sound range information output by the first sound range detection means 16 and the second sound range detection means 17,
Signal superimposing means for superimposing a specific signal based on the pitch information output by the second singing pitch detecting means 15 and the reference sound information output by the reference sound outputting means 111, 19 is a video signal output end, and 20 is an image receiving Reference numeral 21 denotes a microcomputer which controls the motor driver 4, the pickup driver 5, the model song extracting means 12, the first sound range detecting means 16 and the second sound range detecting means 17, and receives a code signal from the code signal detecting means 11. .

The operation of the singing practice device configured as described above will be described. 11, except for the microphone 110, the reference sound output means 111, the speaker 112, and the signal superposition means 113, the operation is exactly the same as that of the first embodiment shown in FIG. 1, and the configuration is also the same. .

Regarding the reference sound output means 111 of FIG.
This will be described with reference to the drawings. FIG. 12 shows the reference sound output means 1.
It is a block diagram which shows the circuit structure of 11. In FIG. 12, 120 is a key circuit, 121 is a reference sound setting circuit that sets a reference sound by the key circuit 120, 122 is a reference sound generating circuit that generates a reference sound according to the setting of the reference sound setting circuit 121, and 123 is a reference sound output. An end 124 is a reference sound information output end.

First, when an input is given to the key circuit 120, the inputted information is inputted to the reference sound setting circuit 121. The reference sound setting circuit 121 interprets the input to the key circuit 120, sets the reference sound, and outputs the reference sound generating circuit 122.
To the reference sound output command. Further, the set content of the reference sound is output from the reference sound information output end 124 as reference sound information. The determination of the reference sound here is performed by the key circuit 120.
Input may be done one-to-one, or the key circuit 120
It may be automatically performed at fixed time intervals even after the input to. Then, according to the setting of the reference sound setting circuit 121, the reference sound generating circuit 122 outputs the reference sound, and the reference sound output terminal 12
The reference sound is output from 3. The reference sound generation circuit 122 may be provided with an element that amplifies and outputs the FM sound source IC or the like.

Since the reference sound output from the reference sound output end 123 is output from the speaker 112, the singer can monitor the reference sound.

Next, the signal superimposing means 113 shown in FIG. 11 will be described. In addition to the range information input terminal of the signal superimposing means 18 in the first embodiment, the signal superimposing means 113 has a second
The difference is that the pitch information output by the singing pitch detection means 15 and the reference sound information output by the reference sound output means 111 from the reference sound information output end 124 are input. The other contents are exactly the same as the signal superimposing means 18.

FIG. 13 shows an example of screen display by the signal superimposing means 113. In FIG. 13, reference numeral 70 denotes a keyboard display, 71
Is a first character display showing the horizontal position of the range display of the model singing, 72 is a second character display showing the horizontal position of the range display of the singer, 73 is a first range display showing the range of the model singing,
74 is a second tone range display showing the tone range of the singer, 130 is a reference tone display showing the setting of the reference tone, and 131 is a singer scale display showing the pitch of the singer as a scale. Reference sound display 13
The contents other than 0 and the singer scale display 131 are exactly the same as in the first embodiment.

The display contents of the reference tone display 130 and the singer scale display 131 in FIG. 13 will be described. The reference tone display 130 and the singer scale display 131 correspond to the keyboard 70 and are displayed so that the respective scales can be clearly recognized. The reference sound display 130 is displayed on the keyboard 70 in an overlapping manner, but the reason for providing such display contents is to give an image as if the output of the reference sound was realized by pressing the keyboard. . In the example of FIG. 13, the scale of the reference tone is the sixth D scale from the low scale of the keyboard 70 according to the position of the reference tone display 130, and the scale of the singer is the seventh scale in the singer scale display 131. It is displayed that it is the scale of E. When the singer can arbitrarily set the reference sound, the reference sound output means 11
When the arrangement of the keys in the one key circuit 120 is made to correspond to the keyboard 70, the keys can be made to correspond one-to-one with the keyboard display, and the recognition of the keys becomes clear.

As described above, by displaying the scale information in association with the keyboard 70, the comparison between the two scales and the keyboard indicating the scale can be clearly recognized on the screen display. Also, the difference between the two scales can be clearly recognized by the difference in the display position.
Furthermore, by practicing the singing by setting the reference tone in consideration of the range display, and by implementing the scale that the singer can cover the range of the model singing, the practice in singing the song is efficient. Can be carried out. It becomes possible to further train the pitch.

As in the case of the first embodiment, it is possible to obtain the advantage of being clearer than the recognized image by using different colors for the reference tone display 130 and the singer scale display 131.

The point that the display means not using the superimposing process can be used as the notification means is also the same as in the first embodiment.

In the third embodiment, the microphone 110, the reference sound output means 111 and the speaker 112 are used in the first embodiment.
Although the example in which the microphone is added has been described, in the fourth example shown in FIG. 14, which has a configuration in which the microphone 110, the reference sound output means 111, and the speaker 112 are added to the second example, singing is performed by display. It becomes possible to focus on the scale in which the deviation is detected, practice the basic utterance for that scale, and further train the pitch.

A display example of the screen in the fourth embodiment is shown in FIG.
5 shows. By displaying the reference note display 130 and the singer scale display 131 side by side with the display contents of FIG. 10, the comparison between the two scales and the keyboard indicating the scale can be clearly recognized on the screen display. Also, the difference between the two scales can be clearly recognized by the difference in the display position. In addition, practicing singing by setting the reference tone in consideration of the scale in which the shift has occurred, and practicing vocalization in the scale in which the shift has occurred as a result of singing the song, enables efficient song practice. Can be carried out. In addition, it becomes possible to perform pitch training.

As described above, according to the present embodiment, by providing the microphone, the reference sound output means, and the speaker in the first embodiment, it is possible to clearly recognize the comparison between the two scales. The singer can practice the vocalization performed by listening to the reference tone on the screen display in a visually easy-to-understand manner. Furthermore, because the correspondence with the range can be clearly recognized by the display, practice of the singing by setting the reference tone in consideration of the range, and practice of the scale that the singer can cover the range of the model singing, You will be able to practice basic vocalization and singing when you sing a song.

Further, in comparison with the second embodiment, by providing the microphone, the reference sound output means, and the speaker, the comparison between the two scales can be clearly recognized on the display, so that the singer hears the reference sound. You can practice the vocalization in a visually easy-to-understand manner. Furthermore, since the correspondence with the scale in which the shift has occurred can be clearly recognized by the display, practice of singing by setting the reference tone in consideration of the scale in which the shift has occurred, and the basics for singing the song It becomes possible to practice realistic vocalization and train the pitch.

In the first to fourth embodiments, the singing practice device using the disc is introduced, but it goes without saying that the present invention is not limited to the disc as a medium.

[0089]

As described above, according to the present invention, the first and second song pitch detecting means for detecting the pitch information of a song and the pitch information indicating the highest pitch and the lowest pitch from the inputted pitch information are extracted. By providing the first and second range detecting means for detecting range information and the notifying means for notifying the range information, the singer can clearly recognize the range of the model song and his / her own singing by the notifying means. Therefore, it is possible to objectively and easily recognize the difference in singing and to practice singing efficiently.

Alternatively, it is provided with first and second singing tone range detecting means for detecting the pitch information of the singing, a calculating means for calculating the difference between the two inputted pitch information, a storing means, and a notifying means. With this, the singing person can clearly recognize the scale in which the deviation of his own singing with respect to the model singing occurs by the notification means, so that the singing person can recognize the scale in which the singing practice is emphasized in an objective and easy-to-understand manner. Therefore, the singing practice can be efficiently performed.

Further, since the microphone, the reference sound output means and the speaker are provided, the comparison between the two scales can be clearly recognized, so that the singer can easily practice the voicing performed by listening to the reference sound. be able to.
Furthermore, since the correspondence with the scale and the scale in which the gap has occurred can be clearly recognized by the display, practice of singing by setting the reference tone in consideration of the scale in which the scale and gap have occurred,
You will be able to practice the basic vocalization and singing pitch when singing the song.

[Brief description of drawings]

FIG. 1 is a block diagram of a singing practice device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of a singing pitch detecting means.

FIG. 3 is a schematic diagram showing a waveform of an input signal and a measurement result in the zero-cross detection circuit.

FIG. 4 is a block diagram showing a memory configuration of the same.

FIG. 5 is a flowchart showing a range detection determination process of the range detecting means.

FIG. 6 is a block diagram showing the circuit configuration of the signal superimposing means.

FIG. 7 is a schematic diagram showing an example of screen display.

FIG. 8 is a block diagram of a singing practice device according to a second embodiment of the present invention.

FIG. 9 is a block diagram showing a circuit configuration of a storage unit of the same.

FIG. 10 is a schematic diagram showing an example of screen display of the same.

FIG. 11 is a block diagram of a singing practice device according to a third embodiment of the present invention.

FIG. 12 is a block diagram showing a circuit configuration of the reference sound output means.

FIG. 13 is a schematic diagram showing an example of screen display of the same.

FIG. 14 is a block diagram of a singing practice device according to a fourth embodiment of the present invention.

FIG. 15 is a schematic diagram showing an example of screen display.

FIG. 16 is a block diagram showing a configuration of a conventional karaoke practice device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 disk 2 motor 3 pickup 4 motor driver 5 pickup driver 6 video signal demodulation means 7 time axis correction means 8 audio signal demodulation means 9 first audio signal output end 10 second audio signal output end 11 code signal detection means 12 model Singing extraction means 13 Singing signal input end 14 First singing pitch detecting means 15 Second singing pitch detecting means 16 First range detecting means 17 Second range detecting means 18 Signal superimposing means 19 Video signal outputting end 20 Receiver

Claims (7)

[Claims] 1. First and second song pitch detecting means for detecting pitch information of a song, and first and second pitch information for detecting pitch information indicating a maximum pitch and a minimum pitch from the pitch information. The sound range detection means and the notification means are provided, and the first and second sound range detection means include the first and second sound range detection means.
The singing practice device for determining range information from the range information detected by the singing range detecting means, and the notifying means notifies the range information detected by the first and second range detecting means. 2. The first and second song pitch detecting means,
The singing practice device according to claim 1, wherein detection of the pitch information is confirmed at regular intervals. 3. The singing practice device according to claim 1, wherein the first and second range detecting means perform the detecting operation in a certain period. 4. The first and second pitch range detecting means start detection, and after the pitch information of a fixed amount or fixed time is input from the first or second singing pitch detecting means, the pitch range information is output. The singing practice device according to claim 1. 5. A first and second song pitch detecting means for detecting pitch information of a song, a calculating means for calculating a difference between two pieces of pitch information, a storing means, and a notifying means. Calculates the difference between the pitch information detected by the first and second song pitch detection means, and the storage means stores the pitch information detected by the second song pitch detection means and the output of the calculation means. The information is updated, and the notification means
A singing practice device that notifies the stored information of the storage means. 6. A microphone, a reference sound output means, and a speaker are provided, wherein the microphone is input to the first singing pitch detection means, and the notification means includes reference sound information output by the reference sound output means. The singing practice device according to claim 1 or 5, which also notifies the pitch information detected by the first singing pitch detecting means. 7. The singing practice device according to claim 1, wherein the notification means adds and displays a character display signal to the video signal.