BR0011508A - Sistema de codificação de fala, e, processo para usar um codificador de fala em um sistema de telecomunicação celular digital - Google Patents

Sistema de codificação de fala, e, processo para usar um codificador de fala em um sistema de telecomunicação celular digital

Info

Publication number
BR0011508A
BR0011508A BR0011508-8A BR0011508A BR0011508A BR 0011508 A BR0011508 A BR 0011508A BR 0011508 A BR0011508 A BR 0011508A BR 0011508 A BR0011508 A BR 0011508A
Authority
BR
Brazil
Prior art keywords
rate data
low rate
encoder
speech
digital cellular
Prior art date
Application number
BR0011508-8A
Other languages
English (en)
Inventor
Fredrik Jansson
Erik Ekudden
Karl Hellwig
Tomas Frankkila
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR0011508A publication Critical patent/BR0011508A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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
    • G10L25/78—Detection of presence or absence of voice signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

"SISTEMA DE CODIFICAçãO DE FALA, E, PROCESSO PARA USAR UM CODIFICADOR DE FALA EM UM SISTEMA DE TELECOMUNICAçãO CELULAR DIGITAL". Sinais de dados de baixa taxa, tais como sinais de TTY padrão e sinais de DTMF padrão, podem ser analisados efetivamente e codificados por codificadores de fala usados em sistema celular digital convencional. Isto é realizado provendo um codificador de dados de baixa taxa no trajeto de transmissão do sinal de dados de baixa taxa, exatamente antes do codificador de fala usado pelo sistema celular digital. Fazendo assim, o sinal de dados de baixa taxa padrão é transformado (isto é, modificado) pelo codificador de dados de baixa taxa em um sinal que é mais compatível com o codificador de fala. Semelhantemente, um decodificador de dados de baixa taxa é provido na extremidade receptora do trajeto de transmissão para decodificar o sinal de dados de baixa taxa modificado.
BR0011508-8A 1999-06-15 2000-05-26 Sistema de codificação de fala, e, processo para usar um codificador de fala em um sistema de telecomunicação celular digital BR0011508A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/333,890 US6345251B1 (en) 1999-06-15 1999-06-15 Low-rate speech coder for non-speech data transmission
PCT/SE2000/001082 WO2000078029A1 (en) 1999-06-15 2000-05-26 Low-rate speech coder for non-speech data transmission

Publications (1)

Publication Number Publication Date
BR0011508A true BR0011508A (pt) 2002-03-26

Family

ID=23304674

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0011508-8A BR0011508A (pt) 1999-06-15 2000-05-26 Sistema de codificação de fala, e, processo para usar um codificador de fala em um sistema de telecomunicação celular digital

Country Status (5)

Country Link
US (1) US6345251B1 (pt)
EP (1) EP1190560A1 (pt)
AU (1) AU5857400A (pt)
BR (1) BR0011508A (pt)
WO (1) WO2000078029A1 (pt)

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US11258900B2 (en) 2005-06-29 2022-02-22 Ultratec, Inc. Device independent text captioned telephone service
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US8194526B2 (en) * 2005-10-24 2012-06-05 General Motors Llc Method for data communication via a voice channel of a wireless communication network
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US8964788B2 (en) * 2008-06-05 2015-02-24 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US9083521B2 (en) * 2008-06-05 2015-07-14 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US8825480B2 (en) * 2008-06-05 2014-09-02 Qualcomm Incorporated Apparatus and method of obtaining non-speech data embedded in vocoder packet
US8725502B2 (en) * 2008-06-05 2014-05-13 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US8503517B2 (en) * 2008-06-05 2013-08-06 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
US8958441B2 (en) 2008-06-05 2015-02-17 Qualcomm Incorporated System and method of an in-band modem for data communications over digital wireless communication networks
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Also Published As

Publication number Publication date
EP1190560A1 (en) 2002-03-27
AU5857400A (en) 2001-01-02
US6345251B1 (en) 2002-02-05
WO2000078029A1 (en) 2000-12-21

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Legal Events

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FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]