Review of Spectral Subtraction Techniques for Speech Enhancement
Paurav Goel, Anil Garg · 2011
Speech enhancement aims to improve speech quality by using various techniques and algorithms. The Spectral subtraction technique is historically one of the first algorithms proposed for removal of additive background noise. It is a single channel speech enhancement technique for the enhancement of speech degraded by additive background noise. Background noise can effect our conversation in a noisy environment like in streets or in a car, when sending speech from the cockpit of an airplane to the ground or to the cabin and can effect both quality and intelligibility of speech. With the passage of time Spectral subtraction has undergone many modifications. This is a review paper and its objective is to provide an overview of the variety of spectral subtraction techniques that have been proposed for enhancement of speech degraded by additive background