空间飞行器内声源定位算法研究

摘要

空间飞行器内空间狭小，存在较大的语音混响现像，飞行器内乘员不带专用耳戴进行语音通话时，混响信号影响通话质量。利用声源方位的信号进行语音增强的方法可以抑制混响的干扰，获得较好的通话效果。常用的声源定位算法由于受混响的影响，很难对乘员的语音进行有效地定位。通过研究空间飞行器的语音传输特性，提出了基于相关系数波束形成算法，该算法利用波形的相似性来抑制混响的干扰。实验证明：算法具有较好的声源定位效果，为语音增强提供声源方位参数。%There is a larger sound reverberation phenomenon because of a narrow space in a space aircraft.The reverberation signal influences call quality when crew members don't wear the special earphone for voice calls within the aircraft.The use of a sound source location signal for speech enhancement can suppress reverberation interference to achieve a better call effect.Due to influences of reverberation,a common sound source localization algorithm is very difficult to get an effective location for the voice of a crew member.Here,through studying the speech transmission characteristics of the space aircraft,the beamforming algorithm based on correlation coefficient was proposed and the waveform similarity was used to suppress reverberation interference.Experimental results showed that the algorithm has a better effect of sound source localization to supply source orientation parameters for speech enhancement.