JPH04270393A - Musical interval instructing device - Google Patents

Abstract

PURPOSE:To fairly and simply decide whether a vocal is exact or not from a side of a musical interval at the time of a KARAOKE (accompaniment to recorded music), etc. CONSTITUTION:Musical interval data for instructing a musical interval of a vocal part is stored in advance by allowing it to relate to music data, and musical interval data which is read out in accordance with the music data, and a fundamental frequency calculated from an actual vocal are compared, and also, based on a result of its comparison, a suitable instruction is outputted.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pitch indicating device, and more particularly to a device for determining the accuracy of the pitch of vocals sung along with music.

0002

2. Description of the Related Art Generally, when enjoying karaoke, karaoke music is played back and its lyrics are displayed on an image device, and the user sings while listening to the music and viewing the lyrics on the image device.

0003

[Problem to be Solved by the Invention] By the way, karaoke users are concerned about whether their own vocals are musically accurate or not, and a means for determining this accuracy is desired. By the way.

[0004] The present invention has been made with attention to these points, and its purpose is to be able to fairly and easily judge the accuracy of actual vocals in terms of pitch, so that it can be used to enjoy karaoke, for example. An object of the present invention is to provide a pitch indicating device suitable for various cases.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the solving means taken by the present invention is as shown in FIG. means 10, pitch data reading means 20 that refers to the storage means 10 and reads out pitch data in correspondence with music data, frequency detection means 30 that determines the fundamental frequency from an actual vocal, pitch data reading means 20 and frequency detection means. 30, compares the pitch data with the fundamental frequency, and outputs an appropriate instruction based on the comparison result.

[0006]

[Operation] With the above configuration, the pitch data reading means 2
0 reads pitch data from the storage means 10 in correspondence with music data. On the other hand, the frequency detection means 30 determines the fundamental frequency from the actual vocal. and comparison instruction means 4
0, the pitch data and the fundamental frequency are compared, and an appropriate instruction is output based on the comparison result. With this instruction, the user can fairly and easily judge the accuracy of his/her vocals in terms of pitch.

[0007]

[Embodiments] Hereinafter, embodiments will be explained in detail based on the drawings.

FIG. 2 shows an embodiment of the pitch indicating device. In the same figure, 10 is a storage means, and this storage means 10
The music data of many songs is stored in the . As shown in FIG. 3, each piece of music data is accompanied by vocal data, which is data of a vocal part. These data are 1
It is divided into a large number of sections 1, 2, 3, etc., with each bar being one section, and arranged in the order in which the song progresses, with the vocal data being stored so that it precedes the music data by approximately one section. ing. The vocal data stores pitch data indicating the pitch of the vocal part.

As shown by the long arrow in FIG. 3, a one-screen display code is inserted at the position where the screen should be updated, and the current position display code is inserted at the position where the current position should be shown, as shown by the short arrow in the figure. are inserted as appropriate. Also, storage means 10
The character data that displays the lyrics is stored in character codes.

[0010] A playback device 60 is connected to the storage means 10, and reads music data from the storage means 10.
I'm trying to play this.

A decoder 21 is also connected to the storage means 10, and a vocal data extractor 22 is connected to the decoder 21.
, a pitch data extractor 23, a first data buffer 24 and a second data buffer 25 are connected in order, the vocal data extractor 22 reads the vocal data, the pitch data extractor 23 reads pitch data from the vocal data, This pitch data is stored in the first data buffer 24 and further in the second data buffer 25. Further, the decoder 21 is connected in parallel with a one-screen display code extractor 26 for reading a one-screen display code from vocal data, and a current position display code extractor 27 for reading a current position display code. A frequency divider 28 that divides the frequency of the current position indication code is connected to the current position indication code extractor 27. The output signal of the second data buffer 25 is input to the comparator 41. The output signal of the one-screen display code extractor 26 is input as a trigger signal to the first data buffer 24, and the output signal of the frequency divider 28 is input as a trigger signal to the second data buffer 25, and pitch data is extracted. The pitch data read by the instrument 23 is displayed on the first
It is outputted from the data buffer 24, and further outputted from the second data buffer 25 every time it receives a current position indicating code.

Next, the determination of the fundamental frequency from an actual vocal will be explained. In FIG. 2, reference numeral 31 denotes a microphone for collecting the user's vocals, and a microphone amplifier 32 and a frequency analyzer 33 are connected in this order to the microphone 31.
A microphone amplifier 32 amplifies the audio signal, and a frequency analyzer 33 determines the fundamental frequency. In this case, a signal obtained by dividing the frequency of the current position display code by the frequency divider 28 is input to the frequency analyzer 33 . The output signal of the frequency analyzer 33 is input to the comparator 41 as a fundamental frequency.

The configuration of the frequency analyzer 33 will now be explained with reference to FIG. 4. This frequency analyzer 33 is configured by combining a plurality of matched filters. In the figure, reference numeral 33a denotes N bandpass filters, first to Nth, connected in parallel to the microphone amplifier 32, and each frequency band obtained by dividing the audio band into N sections is a pass band. is assigned as. A detector 33b and an integrator 33c are sequentially connected to each bandpass filter 33a, and the detector 33b detects the signal passing through each bandpass filter 33a to remove high frequency components, and the integrator 33c integrates the signal. ing. and each integrator 33c
The output is input to the comparison detection circuit 33e. Further, one of the outputs of the frequency divider 28 is inputted to each of the integrators 33c after being delayed by a delay circuit 33d, and the other is inputted as is to the comparison detection circuit 33e. That is, the comparison and detection circuit 33e compares the output values from each integrator 33c, determines which bandpass filter 33a exhibits the maximum value, and outputs its number (1 to N). From this number, it is determined that the passband of the bandpass filter 33a is the fundamental frequency of the vocal. This comparison detection circuit 33e operates in synchronization with the current position display code by a signal from the frequency divider 28. Then, each integrator 33 is delayed by the delay time of the delay circuit 33d.
c is cleared.

The comparator 41 compares the pitch data at the current position with the fundamental frequency by synchronizing with the current position indicating code as described above. Then, there are cases in which the fundamental frequency is higher than the pitch data by a predetermined value or more, ``too high pitch,'' cases in which the difference between the fundamental frequency and the pitch data is within a predetermined value, and ``pitch appropriate,'' and cases in which the fundamental frequency is higher than the pitch data. The pitch is also determined to be "too low" which is lower than a predetermined value. A message selector 42, a display means 43, and an image device 44 are connected in this order to the comparator 41. The message selector 42 selects a message corresponding to each case of "pitch too high", "appropriate pitch", and "too low pitch", outputs a display signal corresponding to each message from the display means 43, and outputs a display signal corresponding to each message. In response to this, each message is displayed on the image device 44. Here, if the pitch is too high, the message is "lower the pitch", if the pitch is appropriate, the message is "leave it as is", and if the pitch is too low, the message is "lower the pitch". Raise the pitch even more.”
It is.

Note that the lyrics are also displayed on the image device 50 based on character data, but a description of the processing blocks will be omitted.

In the above configuration, the decoder 21, the vocal data extractor 22, the pitch data extractor 23, the first
The data buffer 24, the second data buffer 25, the one-screen display code extractor 26, the current position display code extractor 27, and the frequency divider 28 refer to the storage means 10 and read pitch data in correspondence with music data. It constitutes a reading means 20. Also, a frequency detection means 30 uses a microphone 31, a microphone amplifier 32, and a frequency analyzer 33 to determine the fundamental frequency from an actual vocal.
It consists of Furthermore, the comparator 41, message selector 42, display means 43, and image device 44 receive the outputs of the pitch data reading means 20 and the frequency detection means 30, and compare the pitch data with the fundamental frequency.
Comparison instruction means 40 is configured to output an appropriate instruction based on the comparison result.

Therefore, in the above embodiment, the pitch data and the fundamental frequency are compared, and based on the comparison result, if the pitch is too high, an instruction is given to "lower the pitch further," and "the pitch is appropriate." If the pitch is too low, the user is instructed to ``leave it as is'', and if the pitch is too low, the user is instructed to ``raise the pitch higher'', so the user can fairly and easily check the accuracy of his or her vocals in terms of pitch. I can judge.

Note that the discrimination by the comparator 41 does not necessarily have to be performed in three categories as described above, and may be more or less than this. Furthermore, the content of the message is not limited to the above.

Further, the comparison instruction means may be one that outputs a message visually using an image device as in the above embodiment, but may also be one that outputs a message aurally using a speaker or the like, or a combination of these. Good too.

Furthermore, the data may be composed of MIDI data, for example. In that case, it is sufficient to allocate one channel each to music data and vocal data. At this time, the playback device 60 is a MIDI sound source, and the decoder 21 is a MIDI decoder.

[0021]

As explained above, according to the pitch indicating device of the present invention, pitch data indicating the pitch of the vocal part is stored in association with music data, and the pitch data is read out in correspondence with the music data. The data is compared with the fundamental frequency determined from the actual vocal, and appropriate instructions are output based on the comparison results, allowing users to fairly and easily judge the accuracy of their own vocals in terms of pitch. This makes it suitable as a pitch indicating device used, for example, in playing karaoke music.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of the present invention.

FIG. 2 is a block diagram showing the overall configuration of the embodiment.

FIG. 3 is an explanatory diagram showing the structure of music data.

FIG. 4 is a block diagram showing the configuration of a frequency analyzer.

[Explanation of symbols]

10 Memory means 20 Pitch data reading means 30 Frequency detection means 40 Comparison instruction means

Claims (1)

[Claims] 1. A storage means for storing pitch data indicating the pitch of a vocal part in association with music data; a pitch data reading means for referring to the storage means and reading the pitch data in correspondence with the music data; a frequency detection means for determining the fundamental frequency from the pitch data, and a comparison instruction means for receiving the outputs of the pitch data reading means and the frequency detection means, comparing the pitch data and the fundamental frequency, and outputting an appropriate instruction based on the comparison result. A pitch indicating device characterized by comprising: