Audio signal quality detecting method and device

Abstract

An audio signal quality detection method and device, the method comprising: acquiring the frequency spectrum energy sequence of an audio signal to be detected, the frequency spectrum energy sequence being an N-dimensional vector, N being the window length of a window function for conducing window processing on the audio signal to be detected, and each element in the frequency spectrum energy sequence being used to represent the frequency spectrum energy of each sampling point (S151); according to the frequency spectrum energy sequence, determining a low-energy sub-band in the audio signal to be detected (S152); according to the low-energy sub-band, determining whether the audio signal to be detected has a frequency band loss, and if yes, then determining that the quality of the audio signal to be detected is distorted (S153). The method analyzes the frequency spectrum of an audio signal to be detected, and determines whether the audio signal to be detected has a frequency band loss so as to determine whether the quality of the audio signal to be detected has distortion, thus, without comparing with a source audio signal, knowing whether an audio has distortion, and efficiently detecting the quality of the audio signal.

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 Compare the source ring tone files on the sound platform, output...

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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