Signal processing method and device and earphone

Abstract

The invention discloses a signal processing method and device, and an earphone, and the method comprises the steps: detecting the current environment where signal collection equipment is located through first signal collection equipment and second signal collection equipment located outside an ear canal, judging whether the current noise environment belongs to a wind noise environment or not, andif so, according to an audio signal comprising a third audio signal, carrying out noise reduction on the audio input signal; otherwise, according to the first audio signal and the second audio signal,performing noise reduction on the audio input signal; The problem of limitation of a beam forming algorithm on white noise gain is solved, and the problem that spatial white noise cannot be effectively suppressed by using the beam forming algorithm is avoided, so that effective noise reduction is performed on audio signals in a strong wind noise environment.

Description

technical field [0001] The invention relates to the technical field of sound processing, in particular to a signal processing method, device and earphone. Background technique [0002] In recent years, consumers have higher and higher requirements for the noise reduction capability of uplink calls of earphones, in order to get a better experience in application scenarios such as noisy subways, high-speed vehicles, and outdoor running and cycling. According to different noise generation principles, acoustic scenes can be divided into environmental noise scenes and wind noise scenes. Ambient noise travels through the air and is picked up by microphones. The principle of wind noise is completely different. Specifically, air molecules moving at high speed are a complex three-dimensional unsteady, irregular flow with rotation at the microphone, and various physical parameters such as speed, pressure, and temperature change with time. The space changes randomly, forming air turb...

AI Technical Summary

Problems solved by technology

[0004]Currently, noise in non-target directions is suppressed mainly by using the talk microphone channel and the ambient sound microphone channel as the input of the beamformer, however, the talk microphone and the environment Acoustic microphones are located outside the ear canal and will pick up a lot of wind noise in windy environments

In addition, the spatial correlation of wind noise on multiple microphones of the headset is extremely poor, similar to a kind of spatial white noise, and the white noise gain of the beamformer is limited, which cannot suppress strong wind noise

Images