Abstract: A detection device and a method for audio direction orientation and an audio processing system are provided. The device includes a first filter, which performs a first infinite impulse response operation on each first audio beam to generate second audio beams; an absolute value operator which performs an absolute value operation on amplitude of each second audio beam to generate third audio beams; a second filter which performs a second infinite impulse response operation on each third audio beam to smooth each third audio beam to generate fourth audio beams; and a DOA processor which divides the fourth audio beams into audio beam groups, and selects a selected audio beam from each audio beam group according to energy of each fourth audio beam in each audio beam group to output beam information corresponding to the selected audio beams and used in a speech recognition and for determining a voice direction.

Abstract: A detection device and a method for audio direction orientation and an audio processing system are provided. The device includes a first filter, which performs a first infinite impulse response operation on each first audio beam to generate second audio beams; an absolute value operator which performs an absolute value operation on amplitude of each second audio beam to generate third audio beams; a second filter which performs a second infinite impulse response operation on each third audio beam to smooth each third audio beam to generate fourth audio beams; and a DOA processor which divides the fourth audio beams into audio beam groups, and selects a selected audio beam from each audio beam group according to energy of each fourth audio beam in each audio beam group to output beam information corresponding to the selected audio beams and used in a speech recognition and for determining a voice direction.