Global Patent Index - EP 2755205 A1

EP 2755205 A1 20140716 - Sub-band processing complexity reduction

Title (en)

Sub-band processing complexity reduction

Title (de)

Subband-Verarbeitung zur Komplexitätsverringerung

Title (fr)

Réduction de la complexité de traitement de sous-bande

Publication

EP 2755205 A1 20140716 (EN)

Application

EP 14157074 A 20110124

Priority

  • US 69653310 A 20100129
  • EP 11151856 A 20110124

Abstract (en)

A sub-band processing system that reduces computational complexity and memory requirements includes a processor and a local or distributed memory. Logic stored in the memory partitions a frequency spectrum of bins into a smaller number of sub-bands. The logic enables a lossy compression by designating a magnitude and a designated or derived phase of each bin in the frequency spectrum as representative. The logic renders a lossless compression by decompressing the lossy compressed data and providing lost data based on original spectral relationships contained within the frequency spectrum.

IPC 8 full level

G10L 25/18 (2013.01); G10L 19/00 (2013.01); G10L 19/02 (2013.01); G10L 21/0208 (2013.01)

CPC (source: EP)

G10L 19/0204 (2013.01); G10L 19/0212 (2013.01); G10L 25/18 (2013.01); G10L 2021/02082 (2013.01)

Citation (search report)

  • [A] EP 0527374 A2 19930217 - SEL ALCATEL AG [DE], et al
  • [A] US 2007016404 A1 20070118 - KIM JUNGHOE [KR], et al
  • [X] ANDERSON DAVID V: "SPEECH ANALYSIS AND CODING USING A MULTI-RESOLUTION SINUSOIDAL TRANSFORM", CONFERENCE PROCEEDINGS / THE 1996 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, MAY 7 - 10, 1996, MARRIOTT MARQUIS HOTEL, ATLANTA, GEORGIA, USA, IEEE SERVICE CENTER, PISCATAWAY, NJ, 7 May 1996 (1996-05-07), pages 1037 - 1040, XP002662475, ISBN: 978-0-7803-3192-1
  • [A] MIKSIC A ET AL: "SUBBAND ECHO CANCELLATION IN AUTOMATIC SPEECH DIALOG SYSTEMS", 5TH EUROPEAN CONFERENCE ON SPEECH COMMUNICATION AND TECHNOLOGY. EUROSPEECH '97. RHODES, GREECE, SEPT. 22 - 25, 1997; [EUROPEAN CONFERENCE ON SPEECH COMMUNICATION AND TECHNOLOGY. (EUROSPEECH)], GRENOBLE : ESCA, FR, 22 September 1997 (1997-09-22), pages 2579 - 2582, XP001045216
  • [T] PARANJPE SHREYAS ET AL: "Acoustic Echo Cancellation for Wideband Audio and Beyond", AES CONVENTION 128; MAY 2010, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 1 May 2010 (2010-05-01), XP040509430

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

DOCDB simple family (publication)

EP 2355094 A1 20110810; EP 2355094 B1 20170412; CA 2729707 A1 20110729; CA 2729707 C 20140401; EP 2755205 A1 20140716; EP 2755205 B1 20191211

DOCDB simple family (application)

EP 11151856 A 20110124; CA 2729707 A 20110127; EP 14157074 A 20110124