Sparse Reconstruction of Incomplete Relative Transfer Function: Discrete and Continuous Time Domain

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F15%3A%230003442" target="_blank" >RIV/46747885:24220/15:#0003442 - isvavai.cz</a>

Výsledek na webu

<a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7362412&newsearch=true&queryText=Sparse" target="_blank" >http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7362412&newsearch=true&queryText=Sparse</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EUSIPCO.2015.7362412" target="_blank" >10.1109/EUSIPCO.2015.7362412</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sparse Reconstruction of Incomplete Relative Transfer Function: Discrete and Continuous Time Domain

Popis výsledku v původním jazyce

Relative transfer functions (RTF) between microphones can often be estimated accurately but only for certain frequencies. For example, this happens in situations where the RTF is estimated from a noise-free signal of a target source whose spectrum does not span the whole frequency range. By combining a conventional RTF estimator and a selection of the active frequencies, an incomplete measurement of the RTF is obtained. We propose to retrieve the whole RTF estimate through finding the sparsest representation of the incomplete measurement in the discrete or continuous time-domain and compare both approaches. The RTF estimates are evaluated in terms of attenuation rate that measures the target signal cancellation at the output of a blocking matrix. It is shown by experiments that the reconstructed estimate can achieve significantly better attenuation than the initial (complete) estimate.

Název v anglickém jazyce

Sparse Reconstruction of Incomplete Relative Transfer Function: Discrete and Continuous Time Domain

Popis výsledku anglicky

Relative transfer functions (RTF) between microphones can often be estimated accurately but only for certain frequencies. For example, this happens in situations where the RTF is estimated from a noise-free signal of a target source whose spectrum does not span the whole frequency range. By combining a conventional RTF estimator and a selection of the active frequencies, an incomplete measurement of the RTF is obtained. We propose to retrieve the whole RTF estimate through finding the sparsest representation of the incomplete measurement in the discrete or continuous time-domain and compare both approaches. The RTF estimates are evaluated in terms of attenuation rate that measures the target signal cancellation at the output of a blocking matrix. It is shown by experiments that the reconstructed estimate can achieve significantly better attenuation than the initial (complete) estimate.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20206 - Computer hardware and architecture

Projekt

<a href="/cs/project/GA14-11898S" target="_blank" >GA14-11898S: Zlepšování řečového signálu pomocí částečně slepých metod za použití pole mikrofonů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Signal Processing Conference (EUSIPCO), 2015 23rd European

ISBN

978-099286263-3

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

394-398

Název nakladatele

IEEE

Místo vydání

Nice, France

Místo konání akce

Nice

Datum konání akce

1. 1. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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