Invention Grant
US08131541B2 Two microphone noise reduction system 有权
两个麦克风降噪系统

Two microphone noise reduction system
Abstract:
A two microphone noise reduction system is described. In an embodiment, input signals from each of the microphones are divided into subbands and each subband is then filtered independently to separate noise and desired signals and to suppress non-stationary and stationary noise. Filtering methods used include adaptive decorrelation filtering. A post-processing module using adaptive noise cancellation like filtering algorithms may be used to further suppress stationary and non-stationary noise in the output signals from the adaptive decorrelation filtering and a single microphone noise reduction algorithm may be used to further provide optimal stationary noise reduction performance of the system.
Public/Granted literature
Information query
Patent Agency Ranking
0/0