Time Difference of Arrival Estimation of Speech Source in a Noisy ...

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EE049035 – Spring 2007 Time Difference of Arrival Estimation Features: Based on reverberation model Assume speech source and exploits speech quasi-stationarity In frequency domain. 14
EE049035 – Spring 2007 ATF-s Ratio for TDOA Extraction Denote the Acoustic Transfer Functions (ATF-s): m −jwn0 −jwni ( ) = α + α , = 2,..., 0 i m n n i= 1 L −jwp −jwp 1 A1( w) = βp e 0 0 + βp e i L ∑ A w e e m M The ATF-s ratio (RTF): H w A ( w) α −jwn e e w ∑ i= 1 0 m n0 ( ) = = ( ); A 0 1( w) −jwp βp e 0 m m where, at low reverberations αn ≫ α ; , 0 0 n β i p ≫ β 0 p i ≠ i : e ( w) ≈ 1 m The peak of the corresponding hm( t) can be used to determining the TDOA. i 15
Page 1 and 2: EE049035 - Spring 2007 Time Differe
Page 3 and 4: EE049035 - Spring 2007 Introduction
Page 5 and 6: EE049035 - Spring 2007 Problem Form
Page 7 and 8: EE049035 - Spring 2007 Problem Form
Page 9 and 10: EE049035 - Spring 2007 Acoustic Imp
Page 11 and 12: EE049035 - Spring 2007 Cross Correl
Page 13: EE049035 - Spring 2007 GCC - Simula
Page 17 and 18: EE049035 - Spring 2007 Speech Quasi
Page 19 and 20: EE049035 - Spring 2007 Decorrelatio
Page 21 and 22: EE049035 - Spring 2007 Other Algori
Page 23 and 24: EE049035 - Spring 2007 GCC S1 S2 LD
Page 25 and 26: EE049035 - Spring 2007 Discussion W
Page 27 and 28: EE049035 - Spring 2007 Analysis Win
Page 29 and 30: EE049035 - Spring 2007 Proposed Ext

Time Difference of Arrival Estimation of Speech Source in a Noisy ...

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