IN184794B - - Google Patents

Info

Publication number
IN184794B
IN184794B IN890MA1994A IN184794B IN 184794 B IN184794 B IN 184794B IN 890MA1994 A IN890MA1994 A IN 890MA1994A IN 184794 B IN184794 B IN 184794B
Authority
IN
India
Application number
Other languages
English (en)
Inventor
Paul Alexander Barrett
Original Assignee
British Telecomm
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27235491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IN184794(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB939324967A external-priority patent/GB9324967D0/en
Priority claimed from GB9412451A external-priority patent/GB9412451D0/en
Application filed by British Telecomm filed Critical British Telecomm
Publication of IN184794B publication Critical patent/IN184794B/en

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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
    • G10L2025/786—Adaptive threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
IN890MA1994 1993-09-14 1994-09-13 IN184794B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP93307211 1993-09-14
GB939324967A GB9324967D0 (en) 1993-12-06 1993-12-06 Voice activity detector
GB9412451A GB9412451D0 (en) 1994-06-21 1994-06-21 Voice activity detector

Publications (1)

Publication Number Publication Date
IN184794B true IN184794B (zh) 2000-09-30

Family

ID=27235491

Family Applications (1)

Application Number Title Priority Date Filing Date
IN890MA1994 IN184794B (zh) 1993-09-14 1994-09-13

Country Status (23)

Country Link
US (2) US5749067A (zh)
EP (1) EP0719439B1 (zh)
JP (1) JP3224132B2 (zh)
KR (1) KR100363309B1 (zh)
CN (1) CN1064772C (zh)
AT (1) ATE182420T1 (zh)
BR (1) BR9407535A (zh)
CA (1) CA2169745C (zh)
CZ (1) CZ286743B6 (zh)
DE (1) DE69419615T2 (zh)
DK (1) DK0719439T3 (zh)
ES (1) ES2136204T3 (zh)
FI (1) FI118195B (zh)
GR (1) GR3031515T3 (zh)
HK (1) HK1014392A1 (zh)
HU (1) HU219994B (zh)
IN (1) IN184794B (zh)
MY (1) MY111134A (zh)
NO (1) NO307979B1 (zh)
NZ (1) NZ273045A (zh)
SG (1) SG48935A1 (zh)
SK (1) SK281796B6 (zh)
WO (1) WO1995008170A1 (zh)

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Also Published As

Publication number Publication date
FI118195B (fi) 2007-08-15
CN1130952A (zh) 1996-09-11
DE69419615T2 (de) 2000-05-25
CA2169745C (en) 2000-05-16
CZ67896A3 (en) 1996-07-17
HUT73986A (en) 1996-10-28
SK31896A3 (en) 1997-03-05
EP0719439B1 (en) 1999-07-21
ATE182420T1 (de) 1999-08-15
HK1014392A1 (en) 1999-09-24
KR960705303A (ko) 1996-10-09
SG48935A1 (en) 1998-05-18
WO1995008170A1 (en) 1995-03-23
CZ286743B6 (en) 2000-06-14
CN1064772C (zh) 2001-04-18
NO307979B1 (no) 2000-06-26
ES2136204T3 (es) 1999-11-16
NO961032L (no) 1996-03-13
AU7619894A (en) 1995-04-03
HU219994B (hu) 2001-10-28
US6061647A (en) 2000-05-09
BR9407535A (pt) 1997-08-26
KR100363309B1 (ko) 2003-02-17
NZ273045A (en) 1996-11-26
FI961158A (fi) 1996-03-13
SK281796B6 (sk) 2001-08-06
JPH09502814A (ja) 1997-03-18
AU673776B2 (en) 1996-11-21
MY111134A (en) 1999-08-30
EP0719439A1 (en) 1996-07-03
US5749067A (en) 1998-05-05
FI961158A0 (fi) 1996-03-13
JP3224132B2 (ja) 2001-10-29
DE69419615D1 (de) 1999-08-26
NO961032D0 (no) 1996-03-13
CA2169745A1 (en) 1995-03-23
DK0719439T3 (da) 2000-02-07
HU9600641D0 (en) 1996-05-28
GR3031515T3 (en) 2000-01-31

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