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Chord determination device, chord determination method, and non-transitory recording medium

A method for judging chords and a technology for chords, which can be applied to electroacoustic musical instruments, instruments, etc., and can solve problems such as decreased accuracy of judgment, inability to judge chords, and lack of consideration of key modulation.

Active Publication Date: 2021-11-02
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, none of the above-mentioned prior art fully considers the sounds other than the constituent sounds of the chord notes of the chord, so there is a problem that the accuracy of determination may sometimes decrease.
[0009] In addition, there is a problem that sometimes there is not enough pronunciation of the chord note for judging the chord and proper judgment cannot be made
[0010] Furthermore, since the tonality, especially the modulation, is not taken into consideration, there is a problem that it may not be possible to perform appropriate chord judgments

Method used

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  • Chord determination device, chord determination method, and non-transitory recording medium
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  • Chord determination device, chord determination method, and non-transitory recording medium

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Embodiment Construction

[0034] Hereinafter, modes for implementing the present invention will be described in detail with reference to the drawings. figure 1 It is a figure which shows an example of the hardware structure of the computer which can implement one embodiment of the chord analysis apparatus 100 as software processing.

[0035] figure 1 The shown computer has a CPU 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory: Random Access Memory) 103, an input mechanism 104, a display mechanism 105, a sound system 106, and a communication interface 107, which are connected by a bus 108 interconnected. figure 1 The shown configuration is an example of a computer capable of realizing a chord analysis device, and such a computer is not limited to this configuration.

[0036] The CPU 101 controls the entire computer described above. ROM 102 stores the later-described Figure 4 , Figure 5 , Figure 8 ~ Figure 10 , Figure 13 , Figure 14 The chord analysis processing program shown ...

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Abstract

A chord judging device, a chord judging method and a non-transitory recording medium are provided. In the chord determination method, the processor uses various data stored in the memory to execute the process of dividing the above-mentioned music into a plurality of sections, estimating the key of each section based on the constituent sounds of the divided sections, and determining the key of each section. As for the key change in the section, the chords of the plurality of sections of the musical piece are determined based on the identified key change.

Description

technical field [0001] The present invention relates to a chord judging device and a chord judging method for judging chords of a musical piece. Background technique [0002] There is a request to extract chords from music (music data). For example, a standard MIDI (Musical Instrument Digital Interface) file usually has a melody part and an accompaniment part. When you want to play such a piece of music with an electronic keyboard instrument, for example, the melody is easier to play with your right hand, but there are cases where you want to play an accompaniment with your left hand. However, in a standard MIDI file, it would be nice if there was data for an appropriate piece of music for the left hand, but in most cases such data is not included. However, since electronic keyboard instruments are rare, there are cases where it is desired to play with both hands. In such a case, it is convenient if the chord can be determined from the standard MIDI file of the musical pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10H1/00
CPCG10H1/0008G10H2210/056G10H2210/571G10H2220/036G10H1/0066G10H1/383G10H1/40G10H2210/076G10H2210/081G10H2210/395G10H2210/576G10H2250/021
Inventor 南高纯一
Owner CASIO COMPUTER CO LTD