Patent ID: 7376558
Filing Date: 2008-05-20
Classification: G10L

Abstract:
1. A noise reduction method for automatic speech recognition, including: computing a magnitude spectrum (|Y computing a power spectrum (|Y computing an estimate (|{circumflex over (X)} computing an estimate (|{circumflex over (D)} computing an estimate ({circumflex over (ξ)} computing an estimate ({circumflex over (γ)} computing an attenuation gain (G computing an estimate (|{circumflex over (X)} characterized in that computing the estimates ({circumflex over (ξ)} computing a noise weighting factor (α(m)) for weighting the estimate (|{circumflex over (D)} computing a spectral flooring factor (β(m)) for flooring the estimates ({circumflex over (ξ)} computing the estimates ({circumflex over (ξ)}