A method and system for audible evaluation of sound quality of nonlinear audio system

Abstract

The invention discloses a tone quality auralization evaluation method and system of a non-linear audio system. A one-dimensional Volterra filter parameter is solved by a time domain, so that a problem of inaccurate auralization model estimation of the non-linear system due to a phase difference in frequency domain solution in the prior art can be solved. The method comprises: S1, constructing a non-linear model based on a one-dimensional Volterra filter to simulate a non-linear response of a non-linear audio system; S2, identifying a kernel function parameter of the one-dimensional Volterra filter; S3, feeding an audio testing signal to the established non-linear model and evaluating the one quality of an output result; and S4, according to the evaluation result of the S3, adjusting a parameter of the non-linear model, returning to the S3, evaluating the tone quality improvement situation after adjustment, and carrying out steps in circles until finding an optimal non-linear model parameter.

Description

technical field [0001] The invention relates to the field of audio system evaluation, in particular to a method and system for audible evaluation of sound quality of a nonlinear audio system. Background technique [0002] At present, in the research and development of audio systems, the audibility of the system's sound quality is an important performance indicator. Auralization evaluation refers to constructing the acoustic transmission characteristics of the system through simulation and other technical means, feeding the audio signal that needs to be tested into the evaluation model, conducting subjective audition, evaluating the acoustic transmission characteristics of the system, and improving it. For example, in room acoustic design, parameters such as different room sizes and distribution of acoustic materials can be constructed, sound transmission models can be established, and different design schemes can be modified or determined through subjective sound quality eva...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of inaccurate estimation of the auralization model of the nonlinear system caused by the phase difference in the frequency domain solution in the prior art, and to provide a method and system for evaluating the auralization of the sound quality of the nonlinear audio system, which Solving 1D Volterra Filter Parameters by Time Domain

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