Audio signal quality detection method and device

Abstract

An embodiment of the present invention provides a method and device for detecting the quality of an audio signal. The method includes: acquiring a spectrum energy sequence of the audio signal to be detected, where the spectrum energy sequence is an N-dimensional vector, where N is a window for the audio signal to be detected. The window length of the window function, each element in the spectrum energy sequence is used to represent the spectrum energy of each sampling point; according to the spectrum energy sequence, determine the low-energy subband in the audio signal to be detected; according to the low-energy subband, determine whether the audio signal to be detected exists The frequency band is lost. If it is determined that the audio signal to be detected has a frequency band loss, it is determined that the quality of the audio signal to be detected is distorted. In the embodiment of the present invention, the frequency spectrum of the audio signal to be detected is analyzed to determine whether there is a frequency band loss in the audio signal to be detected, and then determine whether the quality of the audio signal to be detected is distorted, so as to know whether the audio signal to be detected is distorted without comparing it with the source audio signal. Efficient detection of audio signal quality is realized.

Description

technical field [0001] Embodiments of the present invention relate to mobile communication technologies, and in particular to a method and device for detecting audio signal quality. Background technique [0002] At present, operators provide a large number of ring tones for users to use. During the process of recording, editing, storing and transmitting these ring tones, one or several frequency bands of the ring tones may be filtered out (that is, frequency bands are lost), resulting in low ring tones. the quality of. In addition, because the data of the ring tone is massive, it is impossible to manually detect the quality of the ring tone. Therefore, the detection of the quality of the ring tone has attracted widespread attention. [0003] In the prior art, the user terminal dials the ring tone to be detected, and records the target ring tone file of the ring tone; the target ring tone file and the ringtone The source ring tone files on the sound platform are compared, a...

AI Technical Summary

Problems solved by technology

[0004] In the implementation process of the above-mentioned ring tone quality detection method, the source file of the ring tone needs to exist. If it is a user-made ring tone, the audio quality cannot be judged.

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