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Fremgangsmåte for reduksjon av aliasing innført ved spektralinnhyllingsjustering i realverdibaserte filterbanker
Fremgangsmåte for reduksjon av aliasing innført ved spektralinnhyllingsjustering i realverdibaserte filterbanker
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机译:在基于实值的滤波器组中减少频谱包络调整引入的混叠过程
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摘要
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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