Study of Speech Enhancement Based on the Second-Order Differential Microphone Array

摘要

Since noise generally exists around us, speech enhancement technique is necessary to extract voice from the noisy environment. This paper presents a speech enhancement algorithm based on the second-order differential microphone array, which can deal with more spatial information to get better characteristics. The computational auditory scene analysis (CASA) algorithm which based on interaural intensity difference interaural time difference (IID/ITD) is also adopt into the second-order differential microphone array speech enhancement algorithm. The measurement results show that the directivity and signal-to-noise ratio (SNR) are improved obviously.