digital-signal-processing
Two-channel filter banks: quadrature mirror filters and aliasing cancellation
taught
Splitting a signal into a lowpass and a highpass branch whose impulse responses are exact sign-alternating mirrors of each other lets the synthesis stage cancel each branch's own decimation aliasing algebraically, not approximately.
Taught in
-
Two-channel filter banks: quadrature mirror filters and perfect reconstruction
Digital Signal Processing
Requires
- half-band-filters-and-ifir required
Required by
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