The sound source location demonstration instrument is designed based on 'TC264 microprocessor.The new microphone array topology was designed and printed by 3D modeling software creo 3 ,and the sound souree information collected by the microphone array was transmitted to TC264 microprocessor for calculation byT'DOA algorithm to realize the sound source location.The demonstration instrument uses L.D3320 chip toidentify the sound and realize the auxiliary human voice control of the whole system.At the same time , based onO'T( application development framework ) , the windows application sotware is designed for the interactiorbetween the upper system and the underlying platform , which realizes the serial port communication assistant, multi-channel sound waveform display ,location result display and other functions.