Audio input system used in home environment based on microphone array

Abstract

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.

Description

technical field [0001] The present invention relates to an input front-end processing method of an audio interactive system based on a microphone (also known as a microphone) array that can be matched with a TV set, and specifically relates to an audio input system based on a microphone array for a home environment / . Background technique [0002] With the broadbandization of the network and the popularization of home gateways, home high-definition communication and human-computer interaction services with TVs as terminals will emerge in large numbers in the next few years. In the market, the concept of Internet TV has been widely accepted by domestic and foreign manufacturers and a large number of related products have been launched in the past two years; home gateway products are in the ascendant with the accelerated progress of triple play. However, the related high-definition audio and interactive services have not yet achieved a breakthrough. [0003] As the center of...

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