Research on noise suppression for communication in helmet with multiple line-spectrum interference
Voice communication system in aerospace helmet is affected by the noise generated by the fan,pump,and ventilated air flow in space suit.Traditional noise suppression methods work well to suppress on broadband noise,but they cannot suppress line-spectrum interference effectively.In this paper,we carry out the research on noise suppression algorithm under multiple line-spectrum interference,and design an adaptive line-spectrum detection method,which can effectively identify the line spectrums,and further suppress the line-spectrum interference while suppressing the broadband noise.Compared with the traditional noise suppression method,the proposed method works well on suppressing line-spectrum interference,and the PESQ score is improved by about 6%.
line spectrum suppressionnoise suppressionhelmetvoice communication
万方数据
维普
