Návrh neobvyklé kvadraturní zrcadlové banky filtrů s využitím korelace

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F08%3APU71820" target="_blank" >RIV/00216305:26220/08:PU71820 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Design of unconventional quadrature mirror filter bank by using correlation

Popis výsledku v původním jazyce

Quadrature mirror filter bank is used in digital signal processing. Generally dual channel filter bank is composed of low pass filters and high pass filters. The most often they are realized by FIR filters. Outputs of dual channel quadrature mirror filter bank are two subbands with same width. In the case of individual subbands signals are coded, they can be distorted. The distortion is noise. Because reconstruction filter bank is composed of one high pass filter and one low pass filter, it is suitableso whole added noise is into the part of spectrum which is more suppressed by passage of reconstruction filter bank. It is a possibility to merging decomposition filter bank and coder into one function block and this block is realized by sigma-delta modulator which has the same impulse response as replaced low pass filter and high pass filter. In sigma-delta modulator the noise is shaped, but its transfer function can be chosen in accordance required property of filter bank.

Název v anglickém jazyce

Design of unconventional quadrature mirror filter bank by using correlation

Popis výsledku anglicky

Quadrature mirror filter bank is used in digital signal processing. Generally dual channel filter bank is composed of low pass filters and high pass filters. The most often they are realized by FIR filters. Outputs of dual channel quadrature mirror filter bank are two subbands with same width. In the case of individual subbands signals are coded, they can be distorted. The distortion is noise. Because reconstruction filter bank is composed of one high pass filter and one low pass filter, it is suitableso whole added noise is into the part of spectrum which is more suppressed by passage of reconstruction filter bank. It is a possibility to merging decomposition filter bank and coder into one function block and this block is realized by sigma-delta modulator which has the same impulse response as replaced low pass filter and high pass filter. In sigma-delta modulator the noise is shaped, but its transfer function can be chosen in accordance required property of filter bank.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/1ET301710509" target="_blank" >1ET301710509: Sofistikované potlačovače hluku a poruch při přenosu řečových signálů pro pevné a mobilní sítě nové generace</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SPEECH PROCESSING 17th Czech-German Workshop

ISBN

978-80-86269-00-9

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Praha

Datum konání akce

19. 9. 2007

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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