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High-accuracy detection method for tone color of musical instrument

A detection method and high-precision technology, applied in the direction of electro-acoustic musical instruments, instruments, etc., can solve the problems of not being able to achieve very high precision, and the detection effect of musical instrument detection methods is not very ideal, so as to achieve improved accuracy, convenient and fast accurate detection methods, The effect of improving work efficiency

Active Publication Date: 2013-05-01
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the detection effect of the existing musical instrument detection means is not very ideal and cannot achieve high precision, and to provide a high-precision detection method for musical instrument timbre, so as to meet the needs of mass production of high-quality musical instruments, and can also be used for musical instruments. Provide efficient and fast detection methods for workers and users

Method used

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  • High-accuracy detection method for tone color of musical instrument
  • High-accuracy detection method for tone color of musical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] step 1

[0023] Let's take the high-precision detection of piano tone as an example. First, the entire system is powered on. The power system adopts an external independent power supply to improve the flexibility of the device. If several AA batteries are used, it can also be powered by a DC transformer after modification. For example, use a domestic piano as a standard musical instrument, press its F3 key, and the audio signal sent by the key will be input through a non-directional microphone or some microphones with good anti-noise performance, and the audio signal will be converted into an electrical signal. Signal, in this embodiment, a 44.1K sampling frequency can be used, and the 16bit quantized signal acquisition unit sends the electrical signal for sampling processing (if you want to change the accuracy, you can change the sampling frequency and quantization bit of the selected signal acquisition unit according to actual needs number), convert the analog signal ...

Embodiment 2

[0032] step 1

[0033] Let’s take the high-precision detection of violin as an example. First, the whole system is powered on. After the power supply, a certain violin is used as a standard musical instrument, and the E string is played with separate bows. The audio signal is input through the microphone, and the The audio signal is converted into an electrical signal, and the analog signal is converted into a digital signal as shown in step 1 in Embodiment 1, and stored in the data storage unit. Then use the same method in the same environment to play the violin with a bow and play the E string to send out an audio signal for data acquisition and sampling processing, and store it in the data storage unit.

[0034] step 2

[0035] In the signal operation control unit shown in the second step in embodiment 1, the audio signal of the violin in the data storage unit in the data storage unit in the first step of the present embodiment is performed with spectrum analysis, and the ...

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Abstract

The invention discloses a high-accuracy detection method for the tone color of a musical instrument. The method mainly comprises the following steps of: performing operation on a standard tone signal produced by the musical instrument according to time-domain characteristics of an audio signal to obtain a relationship between standard tone frequency in spectral characteristics and the composition of each harmonic tone component and the intensity of each harmonic tone by using a signal operation control unit, comparing the time-domain characteristics and the spectral characteristics of the musical instrument to be detected and a standard musical instrument to obtain a tone color detection result of the musical instrument, and transmitting the result to a result display unit. A user can find a corresponding improvement method by regulating or optimizing the performance of the detected musical instrument according to the detection result, and the method can be used for conveniently and quickly identifying the tone color of the musical instrument. A power supply, an audio signal input unit, a signal acquisition unit, a data storage unit, the signal operation control unit and the result display unit are involved. The method for detecting the color tone of the musical instrument is high in measurement accuracy, convenient to use, intuitive, accurate and reliable, and can be used for tone setters, tuners, metronomes and the like of various musical instruments.

Description

technical field [0001] The invention belongs to the technical field of musical instrument detection, and in particular relates to a high-precision detection method for musical instrument timbre. Background technique [0002] Timbre is the characteristic of sound, the sensory characteristic of sound, and the quality characteristic of musical sound; it is an attribute of sound that can distinguish two tones with the same pitch, sound intensity and sound length. Different musical instruments, due to different production processes or different manufacturing materials, have different timbres for the same musical instrument, because the sounds they produce are accompanied by many harmonics of different frequencies in addition to a fundamental tone. It is these harmonics that act on the human auditory system. The human ear analyzes and synthesizes these harmonic frequencies, and finally generates the feeling of different timbres in the brain, so that people can distinguish the soun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10H1/00
Inventor 刘慧敏姜训勇
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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