Automatic parameter optimization method for parameter equalizer

Abstract

The invention provides an automatic parameter optimization method for a parameter equalizer. The method includes: after a user sets initial control parameters of each filter, enabling a system to sequentially automatically optimize and modify each control parameter of each filter; after adjustment of all the filters in the parameter equalizer is completed, generating performance parameters and a frequency response diagram; and judging whether frequency response of each filter is matched with a preset EQ (equalizer) or not according to the corresponding frequency response diagram, returning to the first filter to restart optimization if not, and completing optimization if yes. By the method, complexity and burden of users in repeated parameter adjustment are lowered greatly. Besides, the method is good in expandability and capable of widening and narrowing the adjusting range, adjusting the step length and modifying maximum optimization times or match degree threshold values so that equalization between optimization effect and optimization time is obtained by the users.

Description

technical field [0001] The invention relates to a parameter equalizer, in particular to an automatic parameter optimization method of the parameter equalizer. Background technique [0002] Current mainstream equalizers (EQ) can be roughly divided into two categories: graphic equalizers and parametric equalizers. Overall, the graphic equalizer is relatively intuitive. It divides the entire audio frequency spectrum into several fixed areas, and each area can be independently adjusted by the user to gain or attenuate. Although the graphic equalizer is relatively simple to use, its limitations are also very obvious, mainly in the fact that the user is limited to a predetermined frequency area and cannot precisely control the frequency response. In addition, from the perspective of its implementation, graphic equalizers usually use finite impulse response (FIR) filters. In order to have good in-band stability and out-of-band attenuation performance, the number of single filter ...

AI Technical Summary

Problems solved by technology

This method only adjusts the width of the parametric equalizer, but does not adjust other parameters

In addition, the error judgment of this method is only limited to the coverage frequency band of a single filter, which is easily limited to local optimization rather than the optimal frequency response of the overall filter bank

[0006] Therefore, how to propose an automatic parameter optimization method for parametric equalizers to solve the problem of complex and cumbersome parameter adjustments in the specific application process of parametric equalizers has become an urgent problem for practitioners in this field.

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