IN2014CN01270A - - Google Patents

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Publication number
IN2014CN01270A
IN2014CN01270A IN1270CHN2014A IN2014CN01270A IN 2014CN01270 A IN2014CN01270 A IN 2014CN01270A IN 1270CHN2014 A IN1270CHN2014 A IN 1270CHN2014A IN 2014CN01270 A IN2014CN01270 A IN 2014CN01270A
Authority
IN
India
Prior art keywords
signal
power
mid
quality
ratio
Prior art date
Application number
Inventor
Jonas Engdegard
Heiko Purnhagen
Leif Sehlstrom
Original Assignee
Dolby Int Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dolby Int Ab filed Critical Dolby Int Ab
Publication of IN2014CN01270A publication Critical patent/IN2014CN01270A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/69—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for evaluating synthetic or decoded voice signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
    • H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Electromagnetism (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The present document relates to audio signal processing in particular to an apparatus and a corresponding method for improving an audio signal of an FM stereo radio receiver. In particular the present document relates to a method and system for reliably detecting the quality of a received FM stereo radio signal and for selecting an appropriate processing based on the detected quality. An apparatus (20) configured to estimate the quality of a received multi channel FM radio signal is described. The received multi¬ channel FM radio signal is representable as a mid signal and a side signal and the side signal is indicative of a difference between a left signal and a right signal. The apparatus (20) comprises a power determination unit configured to determine (101) a power of the mid signal referred to as mid power and a power of the side signal referred to as side power; a ratio determination unit configured to determine (102) a ratio of the mid power and the side power thereby yielding a mid to side ratio; and a quality determination unit configured to determine (105) a quality indicator of the received FM radio signal based at least on the mid to side ratio.
IN1270CHN2014 2011-09-29 2012-10-01 IN2014CN01270A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161540876P 2011-09-29 2011-09-29
PCT/EP2012/069330 WO2013045693A2 (en) 2011-09-29 2012-10-01 High quality detection in fm stereo radio signals

Publications (1)

Publication Number Publication Date
IN2014CN01270A true IN2014CN01270A (en) 2015-06-19

Family

ID=47018980

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1270CHN2014 IN2014CN01270A (en) 2011-09-29 2012-10-01

Country Status (9)

Country Link
US (1) US9319159B2 (en)
EP (1) EP2761618B1 (en)
JP (1) JP5809754B2 (en)
KR (1) KR101585852B1 (en)
CN (1) CN103918030B (en)
BR (1) BR112014007481A2 (en)
IN (1) IN2014CN01270A (en)
RU (1) RU2584009C2 (en)
WO (1) WO2013045693A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5754899B2 (en) 2009-10-07 2015-07-29 ソニー株式会社 Decoding apparatus and method, and program
JP5609737B2 (en) 2010-04-13 2014-10-22 ソニー株式会社 Signal processing apparatus and method, encoding apparatus and method, decoding apparatus and method, and program
JP5850216B2 (en) 2010-04-13 2016-02-03 ソニー株式会社 Signal processing apparatus and method, encoding apparatus and method, decoding apparatus and method, and program
JP6075743B2 (en) 2010-08-03 2017-02-08 ソニー株式会社 Signal processing apparatus and method, and program
JP5581449B2 (en) * 2010-08-24 2014-08-27 ドルビー・インターナショナル・アーベー Concealment of intermittent mono reception of FM stereo radio receiver
TWI516138B (en) * 2010-08-24 2016-01-01 杜比國際公司 System and method of determining a parametric stereo parameter from a two-channel audio signal and computer program product thereof
JP5707842B2 (en) 2010-10-15 2015-04-30 ソニー株式会社 Encoding apparatus and method, decoding apparatus and method, and program
US9396732B2 (en) * 2012-10-18 2016-07-19 Google Inc. Hierarchical deccorelation of multichannel audio
EP2830061A1 (en) 2013-07-22 2015-01-28 Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping
US9875746B2 (en) 2013-09-19 2018-01-23 Sony Corporation Encoding device and method, decoding device and method, and program
CA3162763A1 (en) 2013-12-27 2015-07-02 Sony Corporation Decoding apparatus and method, and program
EP2922058A1 (en) * 2014-03-20 2015-09-23 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Method of and apparatus for evaluating quality of a degraded speech signal
US9875756B2 (en) * 2014-12-16 2018-01-23 Psyx Research, Inc. System and method for artifact masking
GB2551347B (en) * 2016-06-13 2020-04-15 Toshiba Kk Indoor localisation using received signal quality weights
US10580420B2 (en) 2017-10-05 2020-03-03 Qualcomm Incorporated Encoding or decoding of audio signals
CN110556116B (en) 2018-05-31 2021-10-22 华为技术有限公司 Method and apparatus for calculating downmix signal and residual signal
CN114420139A (en) * 2018-05-31 2022-04-29 华为技术有限公司 Method and device for calculating downmix signal
CN110556117B (en) * 2018-05-31 2022-04-22 华为技术有限公司 Coding method and device for stereo signal
CN109215673B (en) * 2018-08-06 2020-12-04 杭州摸象大数据科技有限公司 RTP voice stream noise reduction method for VoIP telephone network
EP3928315A4 (en) * 2019-03-14 2022-11-30 Boomcloud 360, Inc. Spatially aware multiband compression system with priority
CN111697982B (en) * 2019-03-15 2022-03-22 安克创新科技股份有限公司 Adaptive noise processing method, device, system and storage medium
CN110033784B (en) * 2019-04-10 2020-12-25 北京达佳互联信息技术有限公司 Audio quality detection method and device, electronic equipment and storage medium
CN110265064B (en) * 2019-06-12 2021-10-08 腾讯音乐娱乐科技（深圳）有限公司 Audio frequency crackle detection method, device and storage medium
CN117133305A (en) * 2023-04-27 2023-11-28 荣耀终端有限公司 Stereo noise reduction method, apparatus and storage medium

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CA2125220C (en) * 1993-06-08 2000-08-15 Joji Kane Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system
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EP1289156A1 (en) * 2001-08-24 2003-03-05 Sony International (Europe) GmbH Noise reduction in a stereo receiver comprising an expander
EP1289155B1 (en) * 2001-08-24 2009-04-08 Sony Deutschland GmbH Noise reduction in an FM stereo receiver
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TWI516138B (en) 2010-08-24 2016-01-01 杜比國際公司 System and method of determining a parametric stereo parameter from a two-channel audio signal and computer program product thereof
JP5581449B2 (en) 2010-08-24 2014-08-27 ドルビー・インターナショナル・アーベー Concealment of intermittent mono reception of FM stereo radio receiver

Also Published As

Publication number Publication date
KR20140049081A (en) 2014-04-24
WO2013045693A3 (en) 2013-06-20
CN103918030A (en) 2014-07-09
US9319159B2 (en) 2016-04-19
EP2761618B1 (en) 2016-11-30
KR101585852B1 (en) 2016-01-15
WO2013045693A2 (en) 2013-04-04
JP2014535183A (en) 2014-12-25
CN103918030B (en) 2016-08-17
BR112014007481A2 (en) 2017-04-04
US20140226822A1 (en) 2014-08-14
JP5809754B2 (en) 2015-11-11
RU2014110245A (en) 2015-09-27
RU2584009C2 (en) 2016-05-20
EP2761618A2 (en) 2014-08-06

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