| 摘要 |
A method and apparatus for noise reduction in a speech signal wherein a first spectrum is generated on the basis of the speech signal and a second spectrum is generated as an estimate of the noise power spectrum. A third spectrum is generated by performing a spectral subtraction of the first and second spectra, and a resulting speech signal is generated on the basis of the third spectrum. A model-based representation describing the quasi-stationary part of the speech signal is generated on the basis of the third spectrum. The model-based representation is manipulated, and the resulting speech signal is generated using the manipulated model-based representation and a second signal derived from the speech signal. |
