TWI339958B - Filter coefficient setting device, filter coefficient setting method and program - Google Patents

Filter coefficient setting device, filter coefficient setting method and program

Info

Publication number
TWI339958B
TWI339958B TW096104509A TW96104509A TWI339958B TW I339958 B TWI339958 B TW I339958B TW 096104509 A TW096104509 A TW 096104509A TW 96104509 A TW96104509 A TW 96104509A TW I339958 B TWI339958 B TW I339958B
Authority
TW
Taiwan
Prior art keywords
filter coefficient
coefficient setting
program
setting device
setting method
Prior art date
Application number
TW096104509A
Other languages
English (en)
Other versions
TW200740136A (en
Inventor
Inoue Takeo
Ohashi Hideki
Original Assignee
Sanyo Electric Co
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 Sanyo Electric Co filed Critical Sanyo Electric Co
Publication of TW200740136A publication Critical patent/TW200740136A/zh
Application granted granted Critical
Publication of TWI339958B publication Critical patent/TWI339958B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
TW096104509A 2006-02-09 2007-02-07 Filter coefficient setting device, filter coefficient setting method and program TWI339958B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006032540A JP4771311B2 (ja) 2006-02-09 2006-02-09 フィルタ係数設定装置、フィルタ係数設定方法、及びプログラム

Publications (2)

Publication Number Publication Date
TW200740136A TW200740136A (en) 2007-10-16
TWI339958B true TWI339958B (en) 2011-04-01

Family

ID=38057285

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096104509A TWI339958B (en) 2006-02-09 2007-02-07 Filter coefficient setting device, filter coefficient setting method and program

Country Status (6)

Country Link
US (1) US7420488B2 (zh)
EP (1) EP1819138B1 (zh)
JP (1) JP4771311B2 (zh)
KR (1) KR100875345B1 (zh)
CN (1) CN100508536C (zh)
TW (1) TWI339958B (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4765117B2 (ja) * 2006-03-02 2011-09-07 オンセミコンダクター・トレーディング・リミテッド エコー防止回路、フィルタ係数設定方法、及びプログラム
GB2493327B (en) 2011-07-05 2018-06-06 Skype Processing audio signals
GB2495129B (en) 2011-09-30 2017-07-19 Skype Processing signals
GB2495128B (en) 2011-09-30 2018-04-04 Skype Processing signals
GB2495131A (en) 2011-09-30 2013-04-03 Skype A mobile device includes a received-signal beamformer that adapts to motion of the mobile device
GB2495472B (en) 2011-09-30 2019-07-03 Skype Processing audio signals
GB2496660B (en) 2011-11-18 2014-06-04 Skype Processing audio signals
GB201120392D0 (en) 2011-11-25 2012-01-11 Skype Ltd Processing signals
CN102984323A (zh) * 2011-12-08 2013-03-20 斯凯普公司 处理音频信号
GB2497343B (en) 2011-12-08 2014-11-26 Skype Processing audio signals
CN104348446B (zh) * 2013-07-26 2018-05-11 中国移动通信集团广东有限公司 一种实现fir滤波的方法和滤波装置
US9992573B1 (en) 2013-10-29 2018-06-05 Meyer Sound Laboratories, Incorporated Phase inversion filter for correcting low frequency phase distortion in a loudspeaker system
US9591498B1 (en) * 2014-06-25 2017-03-07 Sprint Communications Company L.P. Detection of base station synchronization failure
US9565646B1 (en) 2014-06-25 2017-02-07 Sprint Communications Company L.P. Detection of base station synchronization failure
JP6197930B2 (ja) * 2016-09-14 2017-09-20 ソニー株式会社 耳孔装着型収音装置、信号処理装置、収音方法

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JPS6130134A (ja) 1984-07-20 1986-02-12 Nippon Telegr & Teleph Corp <Ntt> エコ−消去方式
EP0287742B1 (en) * 1987-04-22 1993-01-13 International Business Machines Corporation Echo cancelling device for data transmission over two-wire line
US5075687A (en) * 1990-09-27 1991-12-24 Advanced Micro Devices, Inc. Echo suppression with both digital and analog variable attenuators
US5248970A (en) * 1991-11-08 1993-09-28 Crystal Semiconductor Corp. Offset calibration of a dac using a calibrated adc
DE4202206C2 (de) * 1992-01-28 1998-06-10 Bosch Gmbh Robert Analog/digitaler Kompensator mit Pegelregelung für eine Gabelschaltung
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
EP0691756A1 (de) * 1994-07-07 1996-01-10 Siemens-Albis Aktiengesellschaft Echokompensator mit analogen Grobkompensator und digitalem Feinkompensator
JPH08237175A (ja) * 1995-02-24 1996-09-13 Casio Comput Co Ltd エコーキャンセラ装置、該エコーキャンセラ装置のフィルタ係数設定方法および該エコーキャンセラ装置を備える音声通信装置
JP3631459B2 (ja) 1996-04-25 2005-03-23 三菱電機株式会社 エコーキャンセラ
US6215429B1 (en) * 1998-02-10 2001-04-10 Lucent Technologies, Inc. Distributed gain for audio codec
US6208279B1 (en) * 1998-08-17 2001-03-27 Linear Technology Dorporation Single-cycle oversampling analog-to-digital converter
US6597732B1 (en) * 1999-01-14 2003-07-22 Eric Morgan Dowling High-speed modem with uplink remote-echo canceller
US6674810B1 (en) * 1999-05-27 2004-01-06 3Com Corporation Method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal
GB2352029A (en) * 1999-07-08 2001-01-17 Ford Motor Co Removable electronic security bezel for an electronic device
US6658055B1 (en) * 1999-07-16 2003-12-02 Arris International, Inc. Method for accelerating the training of adaptive echo cancelers in the presence of interfering sinusoidal signals
JP3293029B2 (ja) * 1999-08-20 2002-06-17 株式会社マイクロエムズ 通信装置用２線４線変換回路
FI107664B (fi) * 1999-09-03 2001-09-14 Nokia Mobile Phones Ltd Delta-sigma-modulaattori, jossa on kaksivaiheinen kvantisointi, sekä menetelmä kaksivaiheisen kvantisoinnin käyttämiseksi delta-sigma-modulaatiossa
JP3566158B2 (ja) * 1999-12-07 2004-09-15 三菱電機株式会社 エコーキャンセラ装置
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US7881483B2 (en) * 2003-11-11 2011-02-01 Matech, Inc. Two-way communications device having a single transducer
US7480377B2 (en) 2003-12-31 2009-01-20 Intel Corporation Dual adaptive filter apparatus and method
US7307565B1 (en) * 2005-12-22 2007-12-11 Cirrus Logic, Inc. Signal processing system with delta-sigma modulation and FIR filter post processing to reduce near out of band noise

Also Published As

Publication number Publication date
TW200740136A (en) 2007-10-16
EP1819138A1 (en) 2007-08-15
US7420488B2 (en) 2008-09-02
CN101018245A (zh) 2007-08-15
JP4771311B2 (ja) 2011-09-14
KR100875345B1 (ko) 2008-12-22
CN100508536C (zh) 2009-07-01
EP1819138B1 (en) 2011-06-15
JP2007214895A (ja) 2007-08-23
US20070182614A1 (en) 2007-08-09
KR20070081101A (ko) 2007-08-14

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees