BR112014028769A2 - método para reduzir um sinal de ruído de campo próximo em um sinal eletrônico - Google Patents

método para reduzir um sinal de ruído de campo próximo em um sinal eletrônico

Info

Publication number
BR112014028769A2
BR112014028769A2 BR112014028769A BR112014028769A BR112014028769A2 BR 112014028769 A2 BR112014028769 A2 BR 112014028769A2 BR 112014028769 A BR112014028769 A BR 112014028769A BR 112014028769 A BR112014028769 A BR 112014028769A BR 112014028769 A2 BR112014028769 A2 BR 112014028769A2
Authority
BR
Brazil
Prior art keywords
signal
field noise
near field
noise signal
cancellation process
Prior art date
Application number
BR112014028769A
Other languages
English (en)
Inventor
Tennant Bryce
Original Assignee
Harris Corp
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 Harris Corp filed Critical Harris Corp
Publication of BR112014028769A2 publication Critical patent/BR112014028769A2/pt

Links

Classifications

    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Noise Elimination (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

resumo método para reduzir um sinal de ruído de campo próximo em um sinal eletrônico trata-se de sistemas e métodos para cancelar um sinal de ruído de campo próximo. os métodos geralmente envolvem: receber (604), a partir de um primeiro dispositivo de captação acústica (120), um primeiro sinal (214) que compreende um sinal de ruído de campo próximo (206); sintetizar (320, 420, 520, 606) um sinal de réplica (322, 422, 522) que replica o sinal de ruído de campo próximo; e comunicar (608) o sinal de réplica e o primeiro sinal para um processo de cancelamento de ruído de campo distante (150). antes de comunicar o sinal de réplica ao processo de cancelamento de ruído de campo distante, pelo menos uma característica do sinal de réplica é controlada (606) de modo que o processo de cancelamento de ruído de campo distante identifique o sinal de ruído de campo próximo como ruído de campo distante. o processo de cancelamento de ruído de campo distante cancela (610) o sinal de ruído de campo próximo e gera (612) um sinal de saída (360, 460, 560) em que o sinal de ruído de campo próximo tem a amplitude reduzida. 1/1
BR112014028769A 2012-05-22 2013-05-17 método para reduzir um sinal de ruído de campo próximo em um sinal eletrônico BR112014028769A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/477,154 US9183844B2 (en) 2012-05-22 2012-05-22 Near-field noise cancellation
PCT/US2013/041551 WO2013176980A1 (en) 2012-05-22 2013-05-17 Near-field noise cancellation

Publications (1)

Publication Number Publication Date
BR112014028769A2 true BR112014028769A2 (pt) 2017-06-27

Family

ID=48576545

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014028769A BR112014028769A2 (pt) 2012-05-22 2013-05-17 método para reduzir um sinal de ruído de campo próximo em um sinal eletrônico

Country Status (9)

Country Link
US (1) US9183844B2 (pt)
EP (1) EP2852951B1 (pt)
KR (1) KR101941735B1 (pt)
CN (1) CN104272383B (pt)
AU (1) AU2013266621B2 (pt)
BR (1) BR112014028769A2 (pt)
CA (1) CA2870047C (pt)
MX (1) MX346740B (pt)
WO (1) WO2013176980A1 (pt)

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US11558836B2 (en) * 2020-08-07 2023-01-17 Nxp B.V. Noise responsive near-field communications device

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JP4568439B2 (ja) * 2001-01-22 2010-10-27 パナソニック株式会社 エコー抑圧装置
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Also Published As

Publication number Publication date
CA2870047C (en) 2017-10-31
MX346740B (es) 2017-03-30
AU2013266621B2 (en) 2017-02-02
WO2013176980A1 (en) 2013-11-28
US9183844B2 (en) 2015-11-10
CA2870047A1 (en) 2013-11-28
CN104272383B (zh) 2017-06-20
KR20150020525A (ko) 2015-02-26
KR101941735B1 (ko) 2019-01-23
US20130317783A1 (en) 2013-11-28
EP2852951A1 (en) 2015-04-01
CN104272383A (zh) 2015-01-07
AU2013266621A1 (en) 2014-09-25
EP2852951B1 (en) 2018-01-31
MX2014014146A (es) 2015-02-04

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