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 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
    • G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (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)
  • Computer Networks & Wireless Communication (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Telephone Function (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Radio Relay Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Measuring Fluid Pressure (AREA)
  • Burglar Alarm Systems (AREA)
IN890MA1994 1993-09-14 1994-09-13 IN184794B (en:Method)

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 (en:Method) 2000-09-30

Family

ID=27235491

Family Applications (1)

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

Country Status (22)

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

Families Citing this family (100)

* Cited by examiner, † Cited by third party
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IN184794B (en:Method) * 1993-09-14 2000-09-30 British Telecomm
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Also Published As

Publication number Publication date
NO961032D0 (no) 1996-03-13
GR3031515T3 (en) 2000-01-31
JPH09502814A (ja) 1997-03-18
SK31896A3 (en) 1997-03-05
ES2136204T3 (es) 1999-11-16
EP0719439B1 (en) 1999-07-21
HU9600641D0 (en) 1996-05-28
CZ286743B6 (en) 2000-06-14
BR9407535A (pt) 1997-08-26
CZ67896A3 (en) 1996-07-17
CA2169745C (en) 2000-05-16
WO1995008170A1 (en) 1995-03-23
DE69419615D1 (de) 1999-08-26
US5749067A (en) 1998-05-05
DK0719439T3 (da) 2000-02-07
NO307979B1 (no) 2000-06-26
NZ273045A (en) 1996-11-26
FI961158L (fi) 1996-03-13
FI961158A0 (fi) 1996-03-13
AU7619894A (en) 1995-04-03
SK281796B6 (sk) 2001-08-06
CN1064772C (zh) 2001-04-18
JP3224132B2 (ja) 2001-10-29
CA2169745A1 (en) 1995-03-23
SG48935A1 (en) 1998-05-18
ATE182420T1 (de) 1999-08-15
FI118195B (fi) 2007-08-15
MY111134A (en) 1999-08-30
NO961032L (no) 1996-03-13
HU219994B (hu) 2001-10-28
HK1014392A1 (en) 1999-09-24
US6061647A (en) 2000-05-09
HUT73986A (en) 1996-10-28
CN1130952A (zh) 1996-09-11
AU673776B2 (en) 1996-11-21
KR100363309B1 (ko) 2003-02-17
KR960705303A (ko) 1996-10-09
EP0719439A1 (en) 1996-07-03
DE69419615T2 (de) 2000-05-25

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ECSDI930133S (en:Method)
ECSDI930116S (en:Method)
ECSDI930108S (en:Method)
ECSDI930104S (en:Method)
ECSDI930144S (en:Method)
DK9700281U1 (en:Method)
DK74394A (en:Method)
IN176907B (en:Method)
DK47093A (en:Method)
ECSDI930134S (en:Method)