Audio data tone quality detection method and device

A technology for audio data and sound quality detection, applied in speech analysis, instruments, etc., can solve problems such as low screening efficiency and poor listening experience, and achieve the effect of improving efficiency

Active Publication Date: 2020-06-19
TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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AI Technical Summary

Problems solved by technology

The above methods have led to the emergence of a large number of low-quality sound quality songs, which not only bring pressure on song content providers in terms of screening and management, but also bring potential bad listening experience to the majority of users.
[0003] At present, low-quality audio data is mainly manually screened, and the screening efficiency is low.

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  • Audio data tone quality detection method and device
  • Audio data tone quality detection method and device
  • Audio data tone quality detection method and device

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Embodiment Construction

[0083] The concept of the sound quality of audio data involved in the embodiments of the present disclosure is described below:

[0084] Audio data includes songs, voice files, and the like. Taking a song as an example, the sound quality of a song refers to the sound quality perceived by the human ear when the song is played. Among them, the higher the sound quality of the song, the closer the recorded song is to the original state of the sound, which can reflect more the original information of the song; on the contrary, the lower the sound quality of the song, the less effective information the human ear perceives.

[0085] Low-quality sound quality refers to the audio obtained by sampling at a lower sampling rate (such as below 28kHz), denoted as A; or the audio is passed through a lower bit rate encoder (such as LAME 64bits version 3.99.5 encoder at 80kbps and below) Coded at a code rate), the encoded audio with an effective spectral height below 14kHz is recorded as B; t...

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Abstract

The invention discloses an audio data tone quality detection method and device and a storage medium. According to the scheme, audio data are framed according to a preset frame length and a preset frame shift to obtain a multi-frame time domain waveform; invalid frames in the multi-frame time domain waveform are removed to obtain a plurality of valid frames; a power spectrum of each valid frame inthe plurality of valid frames is obtained; the cut-off frequency of the power spectrum of each valid frame is obtained; and the tone quality of the audio data is determined according to the cut-off frequencies of the power spectrums of the plurality of valid frames. By adopting the scheme, the tone quality of the audio data can be rapidly and accurately detected, and the detection efficiency is improved.

Description

technical field [0001] The present disclosure relates to media processing technologies, and in particular to a method and device for detecting sound quality of audio data. Background technique [0002] The sound quality of the song is limited by the technology of the recording equipment and the way of audio transcoding. When the equipment for recording songs is relatively old, or it is considered that low recording parameters are set, the recorded songs will become low-quality songs due to factors such as low sampling rate and small effective spectrum height; instant recording can obtain sound quality For higher digital audio, if an improper audio transcoding method is used, such as a lossy transcoding method with a low sampling rate, then the song obtained after this audio transcoding is also of low quality. The above methods have led to the emergence of a large number of low-quality sound quality songs, which not only brings pressure on the identification and management o...

Claims

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Application Information

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IPC IPC(8): G10L25/60G10L25/18
CPCG10L25/60G10L25/18Y02D30/70
Inventor 徐东
Owner TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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