-
1.发明申请公开(公告)号：US20220159373A1
公开(公告)日：2022-05-19
申请号：US17438986
申请日：2020-03-24
发明人： Wenjie CHEN
摘要： A method for enhancing a far-field speech recognition rate, a system and a storage medium are provided. The method includes scanning in the front of a smart TV so as to obtain position, movement and feature information of an object directly in the front of the smart TV; locating a sound source which sends out a trigger phase and using the obtained feature information for determining whether the sound source is a human; if yes, using a MIC array for forming a narrow sound-pickup beam pointing at the sound source and performing sound pickup; performing an angle adjustment on the sound-pickup beam in real-time so as to track the sound source. It is possible to preform precise positioning and distinguish a target sound source from interfering sources, and it is possible to track the target sound source, thereby enhancing a far-field speech recognition rate.
-
公开(公告)号：US20200035255A1
公开(公告)日：2020-01-30
申请号：US16494767
申请日：2018-10-19
发明人： Wenjie CHEN , Wenling ZHAO
IPC分类号： G10L21/0216 , H04N21/422 , H04N21/485 , G10L21/034
摘要： A method, system and storage medium for solving echo cancellation failure; method comprises: starting echo cancellation algorithm for convergence of self-adapting filter to stabilize coefficient of filter function (S100); presetting maximum amplitude value for signal intensity that microphone can receive, and detecting if microphone signal lower than maximum amplitude value (S200); prompting user or television system automatically to turn down television volume when microphone received signal larger than or equal to maximum amplitude value, to ensure microphone received signal intensity lower than maximum amplitude value (S300); echo cancellation being carried out without distortion of signals, wherein coefficient of self-adapting filter function W(n) may be continually kept stable, avoiding self-adapting filter converging multiple times due to signal distortion (S400). Method effectively solves problem of echo cancellation of self-adapting filter failing caused by multiple convergences due to clipping distortion of microphone signal.
-
搜索结果
2 条记录 (耗时 0.014 秒)
