EP 2840570 A1 20150225 - Enhanced estimation of at least one target signal
Title (en)
Enhanced estimation of at least one target signal
Title (de)
Verbesserte Schätzung von mindestens einem Zielsignal
Title (fr)
Estimation améliorée d'au moins un signal cible
Publication
Application
Priority
EP 13181563 A 20130823
Abstract (en)
Method for estimation of at least one signal of interest (s 1 (t), s 1 (n)) from at least one discrete-time signal (y(n)), said method comprising the steps of a) transforming the at least one discrete-time signal (y(n)) into a frequency domain to obtain a complex spectrum F ¢ y n n = 0 N - 1 of the at least one discrete-time signal (y(n)); b) performing an amplitude estimation on the complex spectrum F ¢ y n n = 0 N - 1 to obtain an estimated amplitude spectrum of the at least one signal of interest (s 1 (t), s 1 (n)); c) performing a phase estimation on the complex spectrum F ¢ y n n = 0 N - 1 , said phase estimation being an amplitude-aware phase estimation using an input signal (s in (n)) to obtain an estimated phase spectrum of the at least one signal of interest (s 1 (t), s 1 (n)) ; d) performing an amplitude estimation on the complex spectrum F ¢ y n n = 0 N - 1 , said amplitude estimation being a phase-aware amplitude estimation using the result of the phase estimation of step c) to obtain an enhanced complex spectrum F ¢ s ^ 1 n n = 0 N - 1 of the at least one signal of interest (s 1 (t), s 1 (n)).
IPC 8 full level
G10L 21/0208 (2013.01); G10L 25/03 (2013.01)
CPC (source: EP)
G10L 21/0208 (2013.01); G10L 25/03 (2013.01)
Citation (search report)
- [X] US 7492814 B1 20090217 - NELSON DOUGLAS J [US]
- [A] US 2009163168 A1 20090625 - ANDERSEN SOREN VANG [DK], et al
- [I] MOWLAEE P ET AL: "On phase importance in parameter estimation in single-channel speech enhancement", 2013 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) IEEE PISCATAWAY, NJ, USA, 31 May 2013 (2013-05-31) - 31 May 2013 (2013-05-31), pages 7462 - 7466, XP002717793, ISBN: 978-1-4799-0356-6, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6639113>
- [Y] TIMO GERKMANN ET AL: "MMSE-Optimal Spectral Amplitude Estimation Given the STFT-Phase", IEEE SIGNAL PROCESSING LETTERS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 20, no. 2, 1 February 2013 (2013-02-01), pages 129 - 132, XP011482926, ISSN: 1070-9908, DOI: 10.1109/LSP.2012.2233470
- [Y] PEJMAN MOWLAEE ET AL: "Phase estimation for signal reconstruction in single-channel speech separation", INTERNATIONAL CONFERENCE ON SPOKEN LANGUAGE PROCESSING, 31 January 2013 (2013-01-31), XP055092414
- [A] EPHRAIM Y ET AL: "Speech Enhancement Using a- Minimum Mean- Square Error Short-Time Spectral Amplitude Estimator", IEEE TRANSACTIONS ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, IEEE INC. NEW YORK, USA, vol. ASSP-32, no. 6, 1 December 1984 (1984-12-01), pages 1109 - 1121, XP002435684, ISSN: 0096-3518, DOI: 10.1109/TASSP.1984.1164453
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2840570 A1 20150225; EP 3036739 A1 20160629; WO 2015024940 A1 20150226
DOCDB simple family (application)
EP 13181563 A 20130823; EP 14753072 A 20140819; EP 2014067667 W 20140819