A speech enhancement system improves the speech quality and intelligibility of a speech signal. The system includes a time-to-frequency converter that converts segments of a speech signal into frequency bands. A signal detector measures the signal power of the frequency bands of each speech segment. A background noise estimator measures a background noise detected in the speech signal. A dynamic noise reduction controller dynamically models the background noise in the speech signal. The speech enhancement renders a speech signal perceptually pleasing to a listener by dynamically attenuating a portion of the noise that occurs in a portion of the spectrum of the speech signal.
申请公布号
EP2056296(A2)
申请公布日期
2009.05.06
申请号
EP20080018600
申请日期
2008.10.23
申请人
QNX SOFTWARE SYSTEMS LIMITED
发明人
LI, XUEMAN;NONGPIUR, RAJEEV;HETHERINGTON, PHILLIP A.