公开(公告)号：EP3078208B1

公开(公告)日：2018-01-10

申请号：EP14809259

申请日：2014-11-25

申请人： BOSE CORP

发明人： RING MARTIN

IPC分类号： H04R1/10 ,  G10K11/178

CPC分类号： H04R1/1083 ,  G10K11/1784 ,  G10K11/17857 ,  G10K11/17881 ,  G10K2210/1081

摘要： An active noise reduction earphone includes a speaker, a plurality of microphones and a feedback system. Each microphone is displaced from the speaker and the other microphones, and each microphone generates a microphone signal responsive to received acoustic noise. The feedback system receives a combination of the microphone signals and generates an inverse noise signal that is applied to the speaker. The speaker generates an inverse acoustic noise signal that substantially cancels the acoustic noise signal at a predetermined location relative to the speaker and the microphones. The feedback system can include a microphone signal combiner in communication with the microphones. The microphone signal combiner generates a signal that may be a sum or weighted sum of the microphone signals and can be used to generate the inverse noise signal. The earphone has an increased noise reduction bandwidth and improved cancellation capability relative to conventional earphones.