Acoustic Echo Cancelling with Michrophone Arrays
|Author(s):||Mattias Dahl, Ingvar Claesson|
|Title:||Acoustic Echo Cancelling with Michrophone Arrays|
|Organization:||Blekinge Institute of Technology|
|Department:||Dept. of Signal Processing (Institutionen för signalbehandling)
Dept. of Signal Processing S-372 25 Ronneby
+46 455 780 00
|Abstract:||This report describes a novel method to perform acoustic echo cancelling with microphone arrays. The method employs a digital self-calibrating microphone system.
The on-site calibration process is a simple indirect calibration which adapts in each special case to the environment and electronic equipment. The method also continuously takes into account environmental disturbances such as car engine noise
and fan noise. The method is primarily aimed at handsfree mobile telephones, by suppressing the handsfree loudspeaker and car noise simultaneously. The report
also contains an extensive evaluation in a car.
|Subject:||Signal Processing\Speech Enhancement|
|Keywords:||Microphone array, adaptive filtering|