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Timbre balancing method

An equalization method and timbre technology, applied in the direction of pitch control, automatic pitch/bandwidth control, electrical components, etc., can solve problems such as large gaps and inconsistencies in amplitude-frequency response curves, and poor cut-off characteristics of second-order parametric equalizers, etc., to achieve Effects of reduced mutual influence, flat passband, and good frequency cutoff characteristics

Pending Publication Date: 2020-05-19
SYSU HUADU IND SCI & TECH INST +1
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Problems solved by technology

This phenomenon also shows that the cut-off characteristics of the second-order parametric equalizer are not good, and the adjacent frequency bands affect each other.
Therefore, it is difficult for the second-order parametric equalizer to achieve precise control of the frequency response, resulting in a large gap between the final amplitude-frequency response curve and the actual desired amplitude-frequency response curve, and there are inconsistencies.

Method used

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Embodiment Construction

[0070] The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

[0071] In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0072] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

[0073] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0074] Such as image 3 Shown, a kind of timbre equalization method comprises the following steps:

[0075] S1: Design the formula for calculating the coefficients of the tone equalization filter with small mutual influence between frequency bands, flat passband, and good frequency cut-off characteristics;

[0076] S2: Analyze the input sound signal by frame, divide the entire sound frequenc...

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Abstract

The invention provides a timbre equalization method. Through a design method for improving the order of an equalizer, the pass band of the equalizer can be flatter and has a better frequency cut-off characteristic, so the mutual influence of adjacent frequency bands is reduced. Meanwhile, according to the loudness curve, dynamic equalization is carried out on the audio frequency signal, and finally, a relatively consistent tone effect is achieved no matter whether the volume is large or small.

Description

technical field [0001] The present invention relates to the field of timbre processing methods, and more specifically, to a timbre equalization method. Background technique [0002] With the development of society and the continuous progress of science and technology, people put forward higher requirements for the sound quality and sound effect of electronic products. In order to achieve better sound performance, usually a digital audio equalizer can be used to adjust and modify the sound quality. Digital audio equalizers generally use second-order parametric equalizers. When a certain frequency point is boosted or attenuated, not only a given center frequency is equalized, but other frequencies near the center frequency will also be boosted together. Or attenuation, adjacent frequency bands affect each other, and each frequency band cannot be precisely controlled. [0003] The digital audio equalizer used for timbre equalization is also known as the parametric (number) eq...

Claims

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Application Information

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IPC IPC(8): H03G5/16
CPCH03G5/165
Inventor 徐永键陆许明谭洪舟
Owner SYSU HUADU IND SCI & TECH INST
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