A microphone array for echo cancellation in audioconference rooms
نویسندگان
چکیده
منابع مشابه
An Efficient Combination of Multi-channel Acoustic Echo Cancellation with a Beamforming Microphone Array
For hands-free man-machine audio interfaces with multi-channel sound reproduction and automatic speech recognition (ASR), both a multi-channel acoustic echo canceller (M-C AEC) and a beamforming microphone array are necessary for sufficient recognition rates. Based on known strategies for combining single-channel AEC and adaptive beamforming microphone arrays, we discuss special aspects for the...
متن کاملSimultaneous echo cancellation and car noise suppression employing a microphone array
This paper presents a method to simultaneously perform 20 dB acoustic echo cancellation and 15-20 dB speech enhancement using an adaptive microphone array combined with spectral subtraction. Primarily intended for handsfree telephones in automobiles, the microphone array system simultaneously emphasizes the near-end talker and suppresses the handsfree loudspeaker and the broadband car noise. Th...
متن کاملHigh-speed Noise Cancellation with Microphone Array
We propose the use of a microphone array based on independent component analysis as a method for high-speed elimination of noise in speech input to mobile terminals. The effectiveness of the proposed method is confirmed by evaluation experiments that reproduce an actual mobile environment.
متن کاملIntegrating Acoustic Echo Cancellation with Adaptive Beamforming Microphone Arrays
An overview is given on the fundamental problems when combining acoustic echo cancellation (AEC) with adaptive beamforming microphone array (ABMA) in fullduplex communications. For reasons of computational complexity and functionality, a compromise is necessary between one echo canceller per microphone signal and a single echo canceller for the beamforming output. Here, the decomposition of the...
متن کاملMEMS Microphone Array Sensor for Air-Coupled Impact-Echo
Impact-Echo (IE) is a nondestructive testing technique for plate like concrete structures. We propose a new sensor concept for air-coupled IE measurements. By using an array of MEMS (micro-electro-mechanical system) microphones, instead of a single receiver, several operational advantages compared to conventional sensing strategies in IE are achieved. The MEMS microphone array sensor is cost ef...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1990
ISSN: 0001-4966
DOI: 10.1121/1.2028155