INTERSPEECH 2004 - ICSLP 8th International Conference on Spoken Language Processing Jeju Island, Korea October 4-8, 2004

A Soft Decision MMSE Amplitude Estimator as a Noise Preprocessor to Speech Coder s Using a Glottal Sensor

Cenk Demiroglu, David V. Anderson

Georgia Institute of Technology, USA

A soft-decision Ephraim-Malah suppression rule based speech enhancement algorithm is proposed for intelligibility enhancement in parametric speech coders. A glottal sensor is used to improve the intelligibility of a baseline system that uses only the acoustic microphone. The objective measure test shows that the proposed system decreases the spectral distortion by 2-3 dB for most phonetic classes. Moreover, significant improvements in DRT scores of nasality and sibilation features are obtained compared to the baseline system when the noise suppression systems are concatenated with a MELP based speech coder.

Full Paper

Bibliographic reference.  Demiroglu, Cenk / Anderson, David V. (2004): "A soft decision MMSE amplitude estimator as a noise preprocessor to speech coder s using a glottal sensor", In INTERSPEECH-2004, 857-860.