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Pregled bibliografske jedinice broj: 89699

An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks


Bregović, Robert; Saramäki, Tapio
An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks // Proceedings of ISCAS2002 - IEEE Symposium on Circuits and Systems
Phoenix, Arizona: IEEE, 2002. str. 825-828 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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Naslov
An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks

Autori
Bregović, Robert ; Saramäki, Tapio

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of ISCAS2002 - IEEE Symposium on Circuits and Systems / - Phoenix, Arizona : IEEE, 2002, 825-828

Skup
ISCAS2002 - IEEE Symposium on Circuits and Systems

Mjesto i datum
Phoenix, Arizona, 26-29.05.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cosine-modulation; filter banks; low-delay; biorthogonal; MDFT

Sažetak
A systematic multi-step approach is described for optimizing the stopband response of the prototype filter for low-delay critically sampled cosine-modulated filter banks in the least-mean-square sense subject to the maximum allowable aliasing and amplitude errors. In this approach, filter banks having several channels are designed by starting with a filter bank with a small number of channels. Then, the number of channels is gradually increased and a new prototype filter is optimized using the modified version of the prototype filter of the previous step as a good start-up solution. Several examples are included illustrating the flexibility of the proposed approach for making compromises between the required filter orders, the required filter bank delays, and the aliasing and amplitude errors. These examples show that by allowing very small amplitude and aliasing errors, the stopband performance of the resulting filter bank is significantly improved compared to the corresponding perfect-reconstruction filter bank. Alternatively, the filter bank delay and the order of the prototype filter can be significantly reduced while still achieving practically the same filter bank performance.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika



POVEZANOST RADA


Projekti:
036024

Ustanove:
Fakultet elektrotehnike i računarstva, Zagreb

Profili:

Avatar Url Robert Bregović (autor)


Citiraj ovu publikaciju:

Bregović, Robert; Saramäki, Tapio
An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks // Proceedings of ISCAS2002 - IEEE Symposium on Circuits and Systems
Phoenix, Arizona: IEEE, 2002. str. 825-828 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Bregović, R. & Saramäki, T. (2002) An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks. U: Proceedings of ISCAS2002 - IEEE Symposium on Circuits and Systems.
@article{article, year = {2002}, pages = {825-828}, keywords = {cosine-modulation, filter banks, low-delay, biorthogonal, MDFT}, title = {An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks}, keyword = {cosine-modulation, filter banks, low-delay, biorthogonal, MDFT}, publisher = {IEEE}, publisherplace = {Phoenix, Arizona} }
@article{article, year = {2002}, pages = {825-828}, keywords = {cosine-modulation, filter banks, low-delay, biorthogonal, MDFT}, title = {An Efficient Approach for Designing Nearly Perfect-Reconstruction Low-Delay Cosine-Modulated Filter Banks}, keyword = {cosine-modulation, filter banks, low-delay, biorthogonal, MDFT}, publisher = {IEEE}, publisherplace = {Phoenix, Arizona} }




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