Aliasing in QMF-bank systems with signal modifications between analysis and synthesis (practical results)
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منابع مشابه
A Note on General Parallel QMF Banks
Two issues concerning alias-free, parallel, quadrature mirror filter (QMF) banks are addressed in this correspondence. First, a property concerning alias-free analysis/synthesis systems is established; second, a scheme is proposed, by which a synthesis bank can be modified in order to take care of aliasing errors caused by linear channel-distortion in a simple manner. Applications of the stated...
متن کاملIJSRD - International Journal for Scientific Research & Development| Vol. 2, Issue 05, 2014 | ISSN (online): 2321-0613
QMF finds wide range of application such as design of wavelet bases, speech and image compression, trans-multiplexers, antenna systems, digital audio industry, and biomedical signal processing due to advancement in QMF banks. This paper presents the design of perfect reconstruction quadrature mirror filter using window technique. A common approach to construct such filterbanks is to employ a tw...
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