Joint model and feature based compensation for robust speech recognition under non-stationary noise environments

Chuan Jia, Peng Ding, Bo Xu
2003 8th European Conference on Speech Communication and Technology (Eurospeech 2003)   unpublished
This paper presents a novel compensation approach, which is implemented in both model and feature spaces, for nonstationary noise Due to the nature of non-stationary noise which can be decomposed into constant part and residual noise part, our proposed scheme is performed in two steps: before recognition, an extended Jacobian adaptation (JA) is applied to adapt the speech models for the constant part of noise; during recognition, the power spectra of noisy speech are compensated to eliminate
more » ... effect of residual noise part of noise. As verified by the experiments performed under different stationary and non-stationary noise environments, the proposed JA is superior to the basic JA and the joint approach is better than the compensation in single space.
doi:10.21437/eurospeech.2003-339 fatcat:pkmlglm35vcsrf2nxru4fgq53y