Title (en)

Audio decoder comprising a background noise estimator

Title (de)

Audiodekodierer mit Hintergrundgeräuschschätzer

Title (fr)

Décodeur audio avec estimateur de bruit de fond

Publication

EP 2866228 A1 20150429 (EN)

Application

EP 14196262 A 20120214

Priority

• US 201161442632 P 20110214
• EP 12706002 A 20120214

Abstract (en)

An audio decoder comprises a background noise estimator that is configured to update a parametric background noise estimate during an active phase. It further comprises a background noise generator configured to synthesize an audio signal during an inactive phase.

IPC 8 full level

G10L 19/03 (2013.01); G10L 19/012 (2013.01); G10L 19/22 (2013.01); G10L 21/0216 (2013.01); G10L 25/78 (2013.01)

CPC (source: EP KR RU US)

G10K 11/16 (2013.01 - RU US); G10L 19/00 (2013.01 - KR US); G10L 19/005 (2013.01 - KR RU US); G10L 19/012 (2013.01 - RU US); G10L 19/02 (2013.01 - RU); G10L 19/0212 (2013.01 - EP RU US); G10L 19/022 (2013.01 - EP US); G10L 19/025 (2013.01 - KR RU); G10L 19/028 (2013.01 - KR); G10L 19/03 (2013.01 - RU US); G10L 19/04 (2013.01 - RU); G10L 19/07 (2013.01 - RU); G10L 19/08 (2013.01 - KR); G10L 19/10 (2013.01 - RU); G10L 19/107 (2013.01 - RU); G10L 19/12 (2013.01 - RU US); G10L 19/13 (2013.01 - RU); G10L 19/18 (2013.01 - EP US); G10L 19/22 (2013.01 - RU US); G10L 21/0216 (2013.01 - RU US); G10L 25/06 (2013.01 - RU); G10L 25/78 (2013.01 - RU US); G10L 19/025 (2013.01 - US); G10L 19/04 (2013.01 - US); G10L 19/107 (2013.01 - US); G10L 19/26 (2013.01 - US); G10L 25/06 (2013.01 - US)

Citation (applicant)

• ISO/IEC CD 23003-3, 24 September 2010 (2010-09-24)
• R. MARTIN, NOISE POWER SPECTRAL DENSITY ESTIMATION BASED ON OPTIMAL SMOOTHING AND MINIMUM STATISTICS, 2001

Citation (search report)

• [A] WO 02101722 A1 20021219 - GLOBESPAN VIRATA INC [US]
• [A] US 2007050189 A1 20070301 - CRUZ-ZENO EDGARDO M [US], et al
• [A] US 5960389 A 19990928 - JARVINEN KARI [FI], et al
• [A] US 2005278171 A1 20051215 - SUPPAPPOLA SETH [US], et al
• [A] MAKINEN J ET AL: "AMR-WB+: a New Audio Coding Standard for 3rd Generation Mobile Audio Services", 2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING - 18-23 MARCH 2005 - PHILADELPHIA, PA, USA, IEEE, PISCATAWAY, NJ, vol. 2, 18 March 2005 (2005-03-18), pages 1109 - 1112, XP010790838, ISBN: 978-0-7803-8874-1, DOI: 10.1109/ICASSP.2005.1415603
• [A] SJOBERG M WESTERLUND ERICSSON A LAKANIEMI S WENGER NOKIA J: "RTP Payload Format for the Extended Adaptive Multi-Rate Wideband (AMR-WB+) Audio Codec; rfc4352.txt", 20060101, 1 January 2006 (2006-01-01), XP015044785, ISSN: 0000-0003
• [A] BRUNO BESSETTE ET AL: "The Adaptive Multirate Wideband Speech Codec (AMR-WB)", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 10, no. 8, 1 November 2002 (2002-11-01), XP011079675, ISSN: 1063-6676
• [A] NEUENDORF MAX ET AL: "A Novel Scheme for Low Bitrate Unified Speech and Audio Coding - MPEG RM0", AES CONVENTION 126; MAY 2009, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 1 May 2009 (2009-05-01), XP040508995

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 2866228 A1 20150429; EP 2866228 B1 20160601; ES 2588483 T3 20161103; PL 2866228 T3 20161130; PT 2866228 T 20160831

DOCDB simple family (application)

EP 14196262 A 20120214; ES 14196262 T 20120214; PL 14196262 T 20120214; PT 14196262 T 20120214