The objective of this work is to establish a single channel noise reduction algorithm for speech enhancement integrated in DSP systems. The main emphasis is on spectral subtraction. The chosen algorithm is based on a Minimum Mean Square Error Log Spectral Amplitude (MMSE-LSA) approach. One of the crucial tasks for good results, i.e. natural and intelligible speech in combination with well attenuated noise and low spectral distortion, is a balanced estimation and weighting of the noise magnitude spectrum.

Authors: Schmitt, Stefan; Sandrock, Malte; Cronemeyer, Jochen
Affiliation: DSPecialists GmbH, Berlin, Germany
AES Convention: 112 (April 2002) Paper Number: 5543
Publication Date: April 1, 2002
Subject: Automotive Audio

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