Adaptive Gain Equalizer for Speech Enhancement
Nils Westerlund, Mattias Dahl, Ingvar Claesson · KTH Publication Database DiVA (KTH Royal Institute of Technology) · 2002
This report presents a noise reduction method for speech communication where the input signal is divided into a number of subbands that are individually weighted in time domain according to the short time Signal-to-Noise Ratio estimate (SNR) in each subband at every time instant. Instead of focusing on suppression the noise, the method is focusing on speech enhancement. The method has proven to be advantageous since it offers low complexity, low delay and low distortion. Also, there is no need for a Voice Activity Detector (VAD). The method is stand-alone and works regardless of speech coding schemes and other surrounding adaptive systems.