Patent ID: 11871183
Assignee: SHENZHEN TINGDUODUO TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 0:
1. A single microphone hearing aid noise reduction method based on a bluetooth headset chip, wherein the single microphone hearing aid noise reduction method based on a bluetooth headset chip comprises:
acquiring an original sound signal, identifying the noise characteristics of noise in the original sound signal, and calling different noise reduction formulas according to different types of noise, wherein the original values of parameters in the noise reduction formula are default empirical values;
iteratively training the noise reduction formula obtained by noise identification;
during iterative training, each repetition of calculation is called an iteration, and the result of each iteration is used as the initial value of the next iteration; ending the iterative training when the signal to noise ratio obtained by iterative training reaches the preset threshold; and optimizing the noise reduction formula, and acquiring the optimal values of parameters in the noise reduction formula;
calculating the original sound signal according to the noise reduction formula optimized by iterative training and the specific value of each parameter, and outputting the signal to noise ratio of the noise;
and judging whether the signal to noise ratio is qualified, and if qualified, carrying out hearing aid processing of the processed sound signal; the iteration speed is high enough on a universal bluetooth headset chip to quickly suppress various noises, and the single microphone hearing aid noise reduction algorithm is loaded into any universal bluetooth headset chip to achieve the same function as single microphone hearing aid noise reduction in the hearing aid chip.