Algoritmy pro rekonstrukci signalu ze spektrogramu
Pri zpracovani signalu v casove-frekvencni oblasti pomoci STFT se casto pracuje pouze s absolutnimi hodnotami (tzv. spektrogramem). Pro zpetnou rekonstrukci signalu je ale treba znat take fazi. V pripade, ze spektrogram je nejak upravovan, puvodni faze jiz nemusi byt konzistentni a ve vyslednem signalu to muze pusobit rusive. Existuji i aplikace, kde puvodni faze neni znama vubec.
V prednasce podam prehled o soucasnych algoritmech pro rekonstrukci fazove informace ze spektrogramu, pricemz hlavni pozornost bude venovana algoritmum pracujicim v realnem case. Implementace algoritmu jsou dostupne na http://ltfat.github.io/phaseret/
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- Vysoke uceni technicke v Brne
- FEKT UTKO
- Brno, Czech Republic
- Czech Republic 616 00
- Building: Technicka 12
- Room Number: SC7.53
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Speakers
Ing. Zdenek Prusa, Ph.D. of Austrian Academy of Sciences Acoustics Research Institute
Algoritmy pro rekonstrukci signalu ze spektrogramu
Biography:
Zdenek Prusa completed his master's studies at the Brno University of Technology, Czech Republic in 2008 and also defended his PhD thesis entitled "Segmentwise Discrete Wavelet Transform" there at the Department of Telecommunications in 2012. In the same year, Zdenek Prusa joined the research group of Peter Balazs at the Acoustics Research Institute.
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Address:Acoustics Research Institute, Wohllebengasse 12-14, Vienna, Wien, Austria, 1040
Ing. Zdenek Prusa, Ph.D. of Austrian Academy of Sciences Acoustics Research Institute
Algoritmy pro rekonstrukci signalu ze spektrogramu
Biography:
Email:
Address:Vienna, Wien, Austria