Sound signal processing system and method

The invention provides a sound signal processing system and method. The system comprises an input module, a phase-difference module, a delay distribution module, and a delay estimation module configured to make a final delay estimation based on the delay distribution. The final delay estimation is applied to align one of two selected channels and combine the two channels to obtain a signal of interest. The phase-difference module calculates phase differences for a range of frequency bins. The delay estimation module considers all possible delays derived from the phase differences, including multiples of +/- 2 pi to overcome the ambiguity in high frequency bins when the spacing between two acoustic sensors is longer than the half of the wavelengths. 本发明提供一种声音信号处理系统及方法，该系统包含输入模块、相位差模块、延迟分布模块，以及配置以基于延迟分布进行最终延迟估计的延迟估计模块。最终延迟估计施加以对两个选定的通道中的一个进行对准，并组合两个通道以获得感兴趣信号。相位差模块计算频格的一定范围的相位差。延迟估计模块考虑了从相位差得出的所有可能的延迟，包含±2π的倍数，其克服当两个声音感测器之间的间隔大于波长的一半时高频格中的模糊。