| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved technique for spectral envelope adjustment.SOLUTION: The present invention proposes a new method for improving the performance of a real-valued filter bank 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. The grouping of the channels during gain calculation, gives an improved energy estimate of the real valued subband signals in the filter bank. |
