Sound source positioning method for seven-element microphone array

The invention discloses a sound source positioning method for a seven-element microphone array. The method comprises the steps that a seven-element microphone array model and an indoor sound field model are built; the microphone array is utilized for receiving indoor sound source voice signals, and collection, filtering, windowing, spectral subtraction and cepstrum treatment are carried out on the received voice signals; phase conversion is utilized for weighting the GCC-PHAT to obtain time delay among microphones; a three-dimensional space positioning method and a coordinate rotation digital computer method are applied to sound source position determination. According to the sound source positioning method, the sound source position can be accurately determined under the indoor environment where reverberation, noise and other interference signals exist, the real-time performance is high, the accuracy is high, and the sound source positioning method is widely applied in the field of voice signal processing.