Development of next-generation binaural speech enhancement system by wavelet transform and new electromagnetic eardrum exciter

研究了基于小波变换和新型电磁鼓膜激励器的新一代双耳语音增强系统。结果表明，Meyer类小波和PTI-CWT是最适合这一应用的母小波。提出了TS-BASE/WT方法，该方法在主客观评价上与传统方法相比具有几乎相同的性能，且具有较少的频带。在此基础上，通过有限元分析和石膏图测量，研究了头部、鼓膜和听小骨周围的声传播情况。

We have studied the next-generation binaural speech enhancement system by wavelet transform and new electromagnetic eardrum exciter. It was found that Meyer type wavelet and PTI-CWT were best mother wavelet for this application. TS-BASE/WT which provide almost the same performance by objective or subjective evaluation as conventional methods with few bands was proposed. Furthermore, sound propagation around head, eardrum, and auditory ossicle were investigated for performance evaluation test by FEM and measurements of plaster figure.