MX9601995A - Detector de tono con desempeño mejorado en la presencia de habla. - Google Patents

Detector de tono con desempeño mejorado en la presencia de habla.

Info

Publication number
MX9601995A
MX9601995A MX9601995A MX9601995A MX9601995A MX 9601995 A MX9601995 A MX 9601995A MX 9601995 A MX9601995 A MX 9601995A MX 9601995 A MX9601995 A MX 9601995A MX 9601995 A MX9601995 A MX 9601995A
Authority
MX
Mexico
Prior art keywords
tone
amplitude
high frequency
low
speech
Prior art date
Application number
MX9601995A
Other languages
English (en)
Other versions
MXPA96001995A (es
Inventor
Ronald Jay Canniff
Ali Noory Jablway
Original Assignee
At & T 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 At & T Corp filed Critical At & T Corp
Publication of MXPA96001995A publication Critical patent/MXPA96001995A/es
Publication of MX9601995A publication Critical patent/MX9601995A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephone Function (AREA)

Abstract

La presente invencion se refiere a un detector de tonos que es adecuado para deteccion de dígitos con multiples frecuencias de tono dual (DTMF), que separa los pares de tonos en un grupo de baja frecuencia y alta frecuencia en donde el otro grupo de frecuencia se atenua por filtrado. La amplitud de los grupos de baja y alta frecuencia sirve como señales de referencia umbral variables separadas. Tonos individuales se filtran con paso de banda con sus salidas correspondientes que se convierten a una señal de amplitud. La amplitud de las señales de tono filtradas en paso de banda individualmente se comparan contra la señal umbral variable de baja o alta frecuencia correspondiente para una determinacion de si está presente un tono. De preferencia, etapas de validacion adicionales se aplican a las decisiones de tono preliminares para proporcionar presicion de deteccion de dígitos mejorada, especialmente en la presencia de otras señales tales como habla.
MX9601995A 1995-05-31 1996-05-27 Detector de tono con desempeño mejorado en la presencia de habla. MX9601995A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08455805 1995-05-31
US08/455,805 US5619564A (en) 1995-05-31 1995-05-31 Tone detector with improved performance in the presence of speech

Publications (2)

Publication Number Publication Date
MXPA96001995A MXPA96001995A (es) 1997-08-01
MX9601995A true MX9601995A (es) 1997-08-30

Family

ID=23810345

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9601995A MX9601995A (es) 1995-05-31 1996-05-27 Detector de tono con desempeño mejorado en la presencia de habla.

Country Status (6)

Country Link
US (1) US5619564A (es)
EP (1) EP0746170B1 (es)
JP (1) JPH08331614A (es)
CA (1) CA2172642C (es)
DE (1) DE69637235T2 (es)
MX (1) MX9601995A (es)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5583933A (en) 1994-08-05 1996-12-10 Mark; Andrew R. Method and apparatus for the secure communication of data
US5907597A (en) 1994-08-05 1999-05-25 Smart Tone Authentication, Inc. Method and system for the secure communication of data
JPH08107444A (ja) * 1994-10-05 1996-04-23 Matsushita Electric Ind Co Ltd 無線携帯装置の自己診断方法
JP3178269B2 (ja) * 1994-10-05 2001-06-18 松下電器産業株式会社 狭帯域無線送受信装置
JP3452430B2 (ja) * 1995-09-11 2003-09-29 富士通株式会社 情報信号検出装置および情報信号検出方法
KR0149759B1 (ko) * 1995-11-20 1998-11-02 김광호 디지탈신호 처리칩을 이용한 디티엠프 검출기 및 구현방법
CN1101634C (zh) * 1996-01-26 2003-02-12 皇家菲利浦电子有限公司 具有改善的单音检测的传输系统
US5896560A (en) * 1996-04-12 1999-04-20 Transcrypt International/E. F. Johnson Company Transmit control system using in-band tone signalling
US5991309A (en) * 1996-04-12 1999-11-23 E.F. Johnson Company Bandwidth management system for a remote repeater network
US6049720A (en) * 1996-04-12 2000-04-11 Transcrypt International / E.F. Johnson Company Link delay calculation and compensation system
US5905755A (en) * 1996-07-17 1999-05-18 Northern Telecom Limited Method and circuit for data regeneration of a data stream
US6078660A (en) * 1996-09-27 2000-06-20 Siemens Information And Communication Systems, Inc. Method and device for decoding a sequence of signals
FR2763772A1 (fr) * 1997-05-23 1998-11-27 Philips Electronics Nv Methode de detection d'une tonalite dtmf, ainsi que dispositif de detection et appareil telephonique pour sa mise en oeuvre
US5995557A (en) * 1997-06-12 1999-11-30 Nortel Networks Corporation Tone detection with aliasing bandpass filters
US6115464A (en) * 1997-10-29 2000-09-05 Siemens Information And Communication Networks, Inc. Method and system for distinguishing valid DTMF signals from spurious DTMF noise
US6157712A (en) * 1998-02-03 2000-12-05 Telefonaktiebolaget Lm Ericsson Speech immunity enhancement in linear prediction based DTMF detector
US6021192A (en) * 1998-02-09 2000-02-01 Ag Communication Systems Corporation Tone detector
US6370244B1 (en) * 1998-04-03 2002-04-09 Board Of Regents Of The University Of Texas System Efficient digital ITU-compliant zero-buffering DTMF detection using the non-uniform discrete fourier transform
US7039044B1 (en) * 1999-10-14 2006-05-02 Mindspeed Technologies, Inc. Method and apparatus for early detection of DTMF signals in voice transmissions over an IP network
KR20020012376A (ko) * 2000-08-07 2002-02-16 임영식 특정 주파수대의 에너지 비를 이용한 톤 신호 검출 방법
US7088817B1 (en) * 2000-10-25 2006-08-08 Tellabs Operations, Inc. Method and apparatus for performing high-density DTMF, MF-R1, MF-R2 detection
US7020272B2 (en) * 2000-10-25 2006-03-28 Tellabs Operations, Inc. High density signal classifier for media gateways
US6850616B2 (en) * 2001-01-22 2005-02-01 Cirrus Logic, Inc. Frequency error detection methods and systems using the same
US8879432B2 (en) * 2002-09-27 2014-11-04 Broadcom Corporation Splitter and combiner for multiple data rate communication system
US6965664B1 (en) * 2003-05-21 2005-11-15 West Corporation System, method, and computer-readable medium for enabling both hearing and hearing-impaired callers to access a resource
US7426235B1 (en) * 2004-10-15 2008-09-16 Xilinx, Inc. Method of adaptive equalization for high-speed NRZ and multi-level signal data communications
US8014468B2 (en) * 2004-12-15 2011-09-06 Microsoft Corporation Energy detection receiver for UWB
JP4604880B2 (ja) * 2005-06-27 2011-01-05 パナソニック電工株式会社 集合住宅用インターホンシステム
JP4609202B2 (ja) * 2005-06-27 2011-01-12 パナソニック電工株式会社 集合住宅用インターホンシステム
CN101046955A (zh) * 2006-04-24 2007-10-03 华为技术有限公司 一种pcm码流语音检测方法
US8812969B2 (en) * 2007-03-21 2014-08-19 Ricoh Co., Ltd. Methods for authoring and interacting with multimedia representations of documents
US8385363B2 (en) * 2007-05-15 2013-02-26 Centurylink Intellectual Property Llc System and method for adapting analog systems to communicate with packet networks
US8687650B2 (en) 2007-12-07 2014-04-01 Nsgdatacom, Inc. System, method, and computer program product for connecting or coupling analog audio tone based communications systems over a packet data network
US9208797B2 (en) * 2008-04-18 2015-12-08 General Motors Llc Tone detection for signals sent through a vocoder
US10484513B2 (en) 2015-07-17 2019-11-19 Nsgdatacom, Inc. System, method, and computer program product for connecting or coupling audio communications systems over a software defined wide area network

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395595A (en) * 1980-04-23 1983-07-26 Nippon Electric Co., Ltd. Digital pushbutton signalling receiver
US4460808A (en) * 1982-08-23 1984-07-17 At&T Bell Laboratories Adaptive signal receiving method and apparatus
CA1268570A (en) * 1987-08-14 1990-05-01 Melvin J. Roberts Telephone tone detector
JPH03132291A (ja) * 1989-10-18 1991-06-05 Fujitsu Ltd Ｐｂ信号検出方式
US5392348A (en) * 1991-11-25 1995-02-21 Motorola, Inc. DTMF detection having sample rate decimation and adaptive tone detection
US5325427A (en) * 1992-03-23 1994-06-28 At&T Bell Laboratories Apparatus and robust method for detecting tones
SE9202065L (sv) * 1992-07-03 1994-01-04 Ericsson Telefon Ab L M Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning
US5459784A (en) * 1992-09-28 1995-10-17 Comsat Corporation Dual-tone multifrequency (DTMF) signalling transparency for low-data-rate vocoders
US5408529A (en) * 1993-06-02 1995-04-18 Motorola, Inc. Dual tone detector operable in the presence of speech or background noise and method therefor

Also Published As

Publication number Publication date
JPH08331614A (ja) 1996-12-13
DE69637235D1 (de) 2007-10-25
CA2172642C (en) 1999-07-20
EP0746170A3 (en) 2003-07-16
DE69637235T2 (de) 2008-06-12
EP0746170A2 (en) 1996-12-04
CA2172642A1 (en) 1996-12-01
EP0746170B1 (en) 2007-09-12
US5619564A (en) 1997-04-08

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