Audio data processing method for personal sound amplification product, and personal sound amplification product

Abstract

The present application relates to the technical field of audio data processing, and relates to an audio data processing method for a personal sound amplification product, and a personal sound amplification product. The method comprises: an adaptive feedback canceller eliminates acoustic feedback in an audio signal; an adaptive notch filter suppresses a howling signal in the audio signal; a transform module converts an audio signal acquired by a microphone into a time-frequency signal; a multi-subband dynamic range compressor performs dynamic range adjustment on the time-frequency signal to obtain gains of frequency points; a filter conversion module calculates filter coefficients on the basis of the gains of the frequency points; a time domain filter performs, on the basis of the filter coefficients, time domain filtering on an audio signal outputted by the adaptive notch filter; an equalizer adjusts a frequency response of the filtered audio signal; an amplitude limiter limits an amplitude of the obtained audio signal to be within a preset range; a digital-to-analog converter converts the audio signal into an electrical signal; and a speaker converts the electrical signal into sound for playback. The present application can reduce PSAP latency.