Tone quality detection method and device

Abstract

The invention discloses a tone quality detection method and device, and belong to the audio technical field. The method comprises the steps of conducting primary processing on audio to be detected after the audio to be detected is received, so as to obtain a correlation value sequence of the audio to be detected, wherein the correlation value sequence is used for indicating the self-correlation property of the audio to be detected; conducting secondary processing on the correlation value sequence to obtain an average correlation coefficient of the audio to be detected, wherein the average correlation coefficient is used for indicating the correlation between multiple correlation values in the correlation value sequence; and determining whether the tone quality of the audio to be detected meets the tone quality standard based on the average correlation coefficient and a preset standard threshold value. The average correlation coefficient of the audio to be detected is obtained by acquiring the correlation value sequence representing the self-correlation property of the audio to be detected, and then tone quality detection is conducted according to the average correlation coefficient. Based on the difference in self-correlation property between noise and music sound, the fact that audio containing noise does not meet a preset tone quality standard can be detected by means of the method, and therefore tone quality detection accuracy is improved.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a sound quality detection method and device. Background technique [0002] Music is an important part of the user's entertainment life, and the user can obtain the audio of various music through the Internet. In order to ensure the listening effect, the user usually hopes that the obtained audio can meet a certain sound quality standard. [0003] In the prior art, the user can detect the sound quality of the audio through the sound quality detection tool, so as to judge whether the sound quality of the audio meets the sound quality standard. Among them, the sound quality detection process of the audio by the sound quality detection tool is: obtain the cut-off frequency of the audio to be detected, judge whether the cut-off frequency is lower than the cut-off frequency threshold, and if it is lower than the cut-off frequency threshold, determine that the sound quality of the audio...

AI Technical Summary

Problems solved by technology

[0005] In practical applications, some noise is usually introduced in the process of encoding, decoding or transcribing the audio. When there is a lot of noise in the audio, the audio will not meet the sound quality standard. In general, the introduction of noise will not affect the cut-off of the audio. Frequency, for many audios with noise but the cutoff frequency is higher than the cutoff frequency threshold, the above method cannot detect that the sound quality of these audios does not meet the sound quality standard, therefore, the above sound quality detection results are not accurate enough

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