Title :
Weighted RLS adaptive beamformer with initial directivity
Author :
Asano, Futoshi ; Suzuki, Yôiti ; Sone, Toshio
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
9/1/1995 12:00:00 AM
Abstract :
For the effective reduction of noise that is suddenly switched on or transient, attenuation is required from its onset. A weighted recursive least square approach, where an extra term providing an initial directivity is combined with the power minimization term, is proposed. A noise reduction system is also proposed
Keywords :
acoustic signal processing; array signal processing; least squares approximations; noise; noise abatement; recursive estimation; attenuation; initial directivity; noise reduction; noise reduction system; power minimization term; speech communication systems; transient noise; weighted RLS adaptive beamformer; weighted recursive least squares; Attenuation; Background noise; Communication switching; Equations; Interference constraints; Least squares methods; Microphones; Noise reduction; Oral communication; Resonance light scattering;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
