The invention provides an audio input
system used in
home environment based on a beam-forming
microphone array. The audio input
system receives an audio input from a user by using the
microphone array which is arranged at the circumference of a television in a
living room or embedded in the television. The audio input
system specifically comprises the
microphone array, a beam-forming module, a target
sound detection module, an echo eliminating module and a back filtering module, wherein the
microphone array comprises a plurality of
microphone array elements used for extracting multichannel audio signals in the home
living room environment; the beam-forming module is used for directionally enhancing the sound along a target direction as well as simultaneously resisting
sound sources from other directions; the target
sound detection module is used for judging the starting and ending end points of a target sound section; the echo eliminating module is used for removing a sound
signal of a television
loudspeaker; and the back filtering module is used for eliminating the irrelevant diffused background noises. The invention also provides an audio input system based on a blind-separation
microphone array. The two systems are both used for inputting the audio signals in the home network environment based on the microphone array.