Audio data processing method and device

Abstract

The embodiment of the invention discloses an audio frequency data processing method and device. The method comprises: obtaining audio signals to be processed; detecting the periodicity of high energy points of audio frequency signals to be processed, and determining a first probability x generated by howlround and a first period t1 generated by howlround according to a detection result; performing spectrum feature detection of the audio signals to be processed, and determining a second probability y generated by howlround and a second period t2 generated by howlround according to a spectrum feature detection result; and if the first probability x and the second probability y are respectively larger than a first threshold a and a second threshold b, and the deviation of the first period t1 and the second period t2 is smaller than a third threshold c, determining requiring noise inhibition. The audio frequency data processing method and device can accurately determine whether the howling happens or not so as to pointedly perform noise inhibition, improve the noise inhibition effect and improve the audio frequency data quality.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an audio data processing method and equipment. Background technique [0002] In application scenarios with self-excitation or positive feedback, there is a source of howling, such as karaoke, live speech or singing application scenarios, the sound played by the audio system is re-collected by the microphone, resulting in self-excited amplification and howling Call. [0003] Howling sounds seriously affect the quality of audio data, so it is necessary to detect and suppress such noises. [0004] The technical solutions to suppress this type of noise include: [0005] 1. Frequency equalization method (broadband notch method): [0006] Because the frequency curve of the microphone pickup and audio equipment is not an ideal flat line, and the acoustic resonance effect of the hall sound field, the frequency response fluctuates greatly. Therefore, the frequency equalizer can be u...

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Problems solved by technology

[0014] Although the above solutions have good effects in concerts and other scenes, if the loudspeaker distortion is large, the form and characteristics of the howling will be very different. Using the above solutions, it is difficult to eliminate the howling, resulting in poor noise suppression effect. Audio data quality is also poor

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