JP2532465Y2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic performance device called a karaoke device for producing accompaniment.

[Prior Art] Conventionally, as an automatic performance device, the one shown in FIG. 3 has been practically used. That is, when the user operates the function key 1 to select a song, the CPU 5 controls the disk driver 2 based on the function information, and when the laser disk 3 is operated, the optical pickup 4 The disc information on the selected song is stored in the laser disc 3
Read from The CPU 5 creates video data and audio data based on the disc information and supplies the video data and audio data to the video processor 6 and the audio processor 7. Based on the video signal output from the video processor 6, the CPU 5 generates lyrics information and background information. Images and the like are displayed on the display 8.

On the other hand, the external sound detected by the microphone 11 is converted into an audio signal and supplied to the amplifier 9 together with the audio signal output from the audio processor 7. By the sound signal and the sound signal amplified by the amplifier 9,
The speaker 10 is driven to generate a sound, so that the user can sing along with the accompaniment while watching the lyrics displayed on the display 8.

[Problem to be Solved by the Invention] However, in such a conventional automatic performance device, the disk information is read from the laser disk 3 at a constant speed irrespective of the user's singing. The lyrics are displayed on the display 8 at a speed that is irrelevant to the singing of the user, and the accompaniment sound is emitted from the speaker 10.

For this reason, if it is difficult for a beginner to sing along with the accompaniment, or even if a skilled person is not accustomed to singing the selected song, once it is delayed from the accompaniment, the accompaniment may be re-scheduled. It will be difficult to sing.

Further, since the accompaniment sound is generated by generating the stored accompaniment sound information as it is, there is a musical difference between the accompaniment sound and the singing voice, that is, there is a musical misalignment with the singing accompaniment. This musical turbulence was remarkable, and those who were not good at singing could not enjoy singing.

The present invention has been made in view of such a conventional problem, and provides an automatic performance device that enables a person who is not good at singing to sing along with an accompaniment. The purpose is to do so.

[Means for Solving the Problem] In order to solve the problem, according to the present invention, at least the accompaniment sound, the volume information of the accompaniment sound, and the melody pitch information indicating the pitch of the melody. , An output unit for sequentially outputting the accompaniment sound and the information from the storage unit, an external sound detection unit for detecting an external sound, and an external sound detected by the external sound detection unit. Pitch discriminating means for discriminating the pitch of the external sound, and a pitch difference detecting a pitch difference between the pitch of the external voice determined by the pitch discriminating means and the melody pitch information output from the output means. Detecting means, an accompaniment sound output from the output means, a transposition means for transposing the pitch of the accompaniment sound to a pitch difference detected by the pitch difference detecting means, and outputting the same; Volume of external sound detected by the detection means , A volume difference detection unit that detects a volume difference between the volume detected by the volume detection unit and the volume information of the accompaniment sound output from the output unit, and transposition by the transposition unit. Sounding means for sounding the accompaniment sound and the external sound detected by the external sound detecting means, and an external sound generated by the sounding means corresponding to the volume difference detected by the volume difference detecting means. Volume varying means for varying the volume.

In the invention according to claim 2, the transposing means changes the pitch of the accompaniment sound to the pitch only when the pitch difference detected by the pitch difference detecting means is less than a certain value. An output stopping means is provided for performing high-difference transposition and outputting, and stopping the output of the output means when the pitch difference is equal to or more than a predetermined value.

[Operation] In the invention according to claim 1, the accompaniment sound stored in the storage means is output by the output means, and when singing, an external voice is detected by the external voice detection means, and the sound generation means is provided by the external voice detection means. Produce a voice and the accompaniment sound. At this time, the pitch difference detecting means detects a pitch difference between the pitch of the external voice and the melody pitch information output from the storage means by the output means, and the transposing means determines the pitch of the accompaniment sound. The difference transposition is applied to the sounding means. Therefore, the accompaniment sound generated by the sound generator always matches the pitch of the external sound. Further, a volume difference difference detection unit detects a volume difference between the volume of the external pitch and the volume information of the accompaniment sound output by the output unit, and the volume variation unit responds to the volume difference by using the sound generation unit. Varies the volume of the external sound that is generated by. Therefore, even when the singing is performed at a low volume with respect to the accompaniment sound, the singing volume matches the volume of the accompaniment sound.

In the invention according to claim 2, the transposing means transposes the pitch of the accompaniment sound to the pitch difference only when the pitch difference detected by the pitch difference detecting means is less than a certain value. And when the pitch difference is equal to or greater than a certain value, the output of the output means is stopped. Therefore, for example, the singing is delayed from the accompaniment or the singing is too fast, so that a difference occurs between the two, and as a result, a certain or more pitch difference occurs between the pitch of the external voice and the pitch of the melody sound. In this case, the accompaniment stops without advancing.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. That is, in FIG. 1, the function key 1 is provided with various switches required for this automatic performance device, such as a start / stop switch and a music selection switch.
The function information output in response to the operation of these switches is
Provided to CPU5.

The CPU 5 performs processing determination necessary for executing the present embodiment,
A predetermined control signal output in accordance with this processing determination is given to the disk driver 2. The disk driver 2 drives a laser disk 3 as storage means, and disk information is stored in the laser disk 3. The disc information includes audio information A stored for each song.
And video information V. The video information V includes video information such as lyrics and background, and the audio information A
Is the accompaniment scale A ₁ , the melody scale A ₂ , and the accompaniment volume level L ₁
And

The disc information is taken out by the optical pickup 4 and given to the CPU 5, and the video information V of the disc information is given from the CPU 5 to the video processor 6. The video processor 6 converts the video information V into a video signal that can be read by the display 8 and provides the video signal to the display 8. Also, the audio information A is provided to an audio processor 7, which converts the audio information A into a sound signal that can be amplified by an amplifier 9, and the sound signal amplified by the amplifier 9 is output by a speaker 10. Pronounced.

On the other hand, the microphone 11 detects an external voice at the time of singing and converts it into a voice signal, and the voice signal is supplied to the scale discrimination circuit 12, the volume discrimination circuit 13, and the pre-amplifier 14, respectively. The scale identification circuit 12 extracts the pitch of the audio signal,
A scale is obtained, and the scale information is provided to the CPU 5, and the volume identification circuit 13 obtains the volume of the audio signal and provides the CPU 5 with the volume information as volume information. The CPU 5 outputs a control signal to the pre-amplifier 14, and the pre-amplifier 14 amplifies the audio signal with an amplification according to the control signal, and outputs the signal to the amplifier 9.

Next, the operation of the present embodiment according to the above configuration will be described with reference to the control flowchart of the CPU 5 shown in FIG. That is, when a start operation is performed after the function key 1 is operated and a music selection is performed, based on the control signal,
The disk driver 2 operates, and disk information is extracted from the laser disk 3 driven by the disk driver 2 via the optical pickup 4 (step 10).
1). The disc information is composed of the audio information A and the video information V as described above. When the video information V is output (step 102), the background and the lyrics are displayed on the display 8.

Next, it is determined whether or not there is a voice input from the microphone 11 (step 103). If this determination is NO and there is no voice input, it is determined whether or not the microphone 11 is stopped (step 10).
4) If this determination is NO and the device is operating, audio information A ₁ (accompaniment scale information) and L ₁ (accompaniment volume information) are output (step 111), and audio information
A ₃ and L ₂ are output (step 112).

Therefore, from the speaker 10, with a pre-laser accompaniment stored in the disk 3 scale information A ₁ and the accompaniment sound data L _1, with sound accompaniment sound is made, the voice information
Although so that the A _3, L ₂ pronunciation speech in is made, in this state, since there is no voice input from the microphone 11, the process of step 112 is not actually speak, thus only accompaniment Will be pronounced.

Then, by performing singing, at a state where there is speech input from the microphone 11, the determination in step 103 becomes YES, and on the basis of the musical scale signal from the musical scale identification circuit 12 extracts the audio scale A _3, extract audio volume level L ₂ based on the volume information from the volume identification circuit 13 (step 105). Next, using the absolute value | A ₂ −A ₃ | of the difference between the melody scale A ₂ and the voice scale A ₃ and a predetermined allowable scale K _A (for example, 2nd, 3rd, etc.), “ | A ₂ −A ₃ | ≧ K _A ”(step 106), and if this determination is YES, the scale of the external voice at the time of singing is set to the melody scale of the song being sung, that is, the correct scale. Means that the scale is out of the allowable scale K _A or more.

And such case, not only the singing pitch is largely deviated, or singing is later than accompaniment by singing too early, deviation occurs in both, the result melody scale A ₂ and the audio scale A _It is assumed that a musical scale difference equal to or more than the allowable musical scale K _A is generated between the musical scale and the musical scale. Therefore, in this case, the capture of the disc information is stopped (step 107), whereby the image on the display 8 is stopped and the sounding of the accompaniment sound is stopped at that time.

Therefore, when the singing is delayed or prematurely performed as compared to the accompaniment sound, the image or the accompaniment sound stops, and the singer recognizes that the singing and the accompaniment sound are not synchronized. This makes it possible to prevent the inconvenience of ending the singing in a state where the singing is not matched with the accompaniment sound to the end.

Then, after executing the process of step 107, the process returns to step 103, repeats the loop of steps 103 and 104 until there is an input of an external voice to the microphone 11, and resumes singing. Judgment is Y
When it becomes ES, the processing of step 105 and step 1 described above
06 is determined.

Therefore, by singing again, the melody scale
Scale difference between A ₂ and the audio scale A ₃ is equal to or less than the allowable scale K _{A, "A 1 ← A 1 - (A} 2 -A 3) " executes the processing in (step 108). That is, since A ₂ −A ₃ is a scale difference between the melody scale A ₂ and the voice scale A ₃ , this scale difference (A ₂
The -A ₃₎ min is subtracted from the accompaniment scale A _1, by the accompaniment scale A ₁ this accompaniment scale A ₁ becomes to be transposed with a said scale difference A ₂ -A _3.

Then, in the next step 109, “L ₁ −L ₂ ≧
Determination of K _L ", i.e. accompaniment volume level L _1, the sound volume level L ₂ is a volume level of the external voice input to the microphone 11
The difference between it is determined whether or not the allowable volume difference K _L or more. If this determination is NO, it means that the singing voice has a volume matching the accompaniment volume, while if NO, it means that the singing voice is too low for the accompaniment sound. Therefore, the processing of “L ₂ ← L ₁ ”, that is, the audio volume level L ₂ is set to the same level as the accompaniment volume level L ₁ (step 110).

That is, in this way, and outputs the accompaniment scale A ₁ set in the processing in step 108 (step 111), and,
The audio volume level L ₂ set by the processing of step 110
Is output (step 112), the speaker 10 emits an accompaniment sound transposed to match the singing voice and a singing voice matching the volume of the accompaniment sound.

Therefore, even if there is a musical difference between the accompaniment sound and the singing voice, that is, a musical deviation in the singing accompaniment, this musical deviation does not appear remarkably, and the volume of the singing is also accompanied. Since the sound matches the sound, even those who are not good at singing can enjoy singing.

When there is no scale difference between the melody scale A ₂ audio scale A _3, that is, when the deviation of the scale singing is made without against accompaniment, the value of A ₂ -A ₃ is zero. Therefore, the transposition is not actually performed even if the process of step 108 is performed,
The accompaniment tone is generated with the accompaniment tone stored in the laser disk 3.

[Effects of the Invention] As described above, the present invention relates to an automatic performance device for generating an accompaniment sound, in which the accompaniment sound has a pitch difference between the pitch information of the melody sound output from the storage means and the pitch of the external sound. Is transposed to produce a sound, and the volume of the external sound to be produced is varied according to the difference between the volume of the accompaniment sound and the volume of the external sound. Therefore, even if a singing with a pitch disorder is performed for the accompaniment, the pitch disorder does not appear remarkably, and the volume at the time of singing is not related to the volume of the accompaniment sound. Is inappropriate, it is possible to make the volume of the singing match the accompaniment sound and sound the singing. Therefore, it is possible to make the listener listen to the singing as if the singing matched with the accompaniment in terms of pitch and volume.

Such transposition is performed when the pitch difference is less than a certain value, and the accompaniment is stopped when the pitch difference is more than a certain value. Therefore, not only when the pitch of the singing is greatly deviated, but also when the singing is later than the accompaniment, or when the singing is too fast, and there is a pitch shift between the two, the accompaniment sound stops, The person singing can recognize that the singing and the accompaniment sound are not synchronized.
Therefore, it is possible to prevent the inconvenience of ending the singing in a state where the singing is not matched to the end.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a control flowchart of the embodiment, and FIG. 3 is a block diagram showing a conventional automatic performance device. 3 ... laser disc, 4 ... optical pickup, 5 ...
... CPU, 6 ... Video processor, 7 ... Audio processor, 8 ... Display, 11 ... Microphone, 12 ...
Scale discriminating circuit, 13 ... Volume discriminating circuit, 14 ... Pre-amplifier.

Claims (2)

(57) [Scope of request for utility model registration] At least an accompaniment sound and volume information of the accompaniment sound,
Storage means for storing melody pitch information indicating the pitch of the melody, output means for sequentially outputting the accompaniment sound and the information from the storage means, external voice detection means for detecting external voice, Pitch discriminating means for discriminating the pitch of the external voice detected by the external voice detecting means; pitch of the external voice discriminated by the pitch discriminating means; and melody pitch information output from the output means. A pitch difference detecting means for detecting a pitch difference between the input sound and an accompaniment sound output from the output means, and transposing the pitch of the accompaniment sound to a pitch difference detected by the pitch difference detecting means. Transposition means for detecting and outputting the sound volume of the external sound detected by the external sound detection means; and the accompaniment sound output from the output means and the sound volume detected by the sound volume detection means. Detects the volume difference with the volume information of Volume difference detecting means, an accompaniment sound transposed by the transposing means and a sounding means for generating an external sound detected by the external sound detecting means, and a sound volume difference detected by the volume difference detecting means. Correspondingly,
An automatic performance device comprising: a sound volume varying unit that varies a volume of an external sound generated by the sounding unit. 2. The transposition means transposes the pitch of the accompaniment sound to the pitch difference only when the pitch difference detected by the pitch difference detection means is less than a predetermined value, and outputs the pitch. 2. The automatic performance apparatus according to claim 1, further comprising an output stopping means for stopping an output of said output means when said pitch difference is equal to or more than a predetermined value.