Method for reduction of aliasing introduced by spectral...

Details Method for reduction of aliasing introduced by spectral... Method for reduction of aliasing introduced by spectral...

H - Electricity

03

K

H03K 5/08 (2006.01) G10L 19/14 (2006.01)

Patent

CA 2688916

The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.

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