GB2208023B - Voice recognition system - Google Patents

Voice recognition system

Info

Publication number
GB2208023B
GB2208023B GB8822390A GB8822390A GB2208023B GB 2208023 B GB2208023 B GB 2208023B GB 8822390 A GB8822390 A GB 8822390A GB 8822390 A GB8822390 A GB 8822390A GB 2208023 B GB2208023 B GB 2208023B
Authority
GB
United Kingdom
Prior art keywords
voice
supplied
signal
power signal
recognition system
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB8822390A
Other versions
GB2208023A (en
GB8822390D0 (en
Inventor
Tetsuya Muroi
Seigou Yasuda
Toshiki Kawamoto
Junichiro Fujimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Priority claimed from JP19725585A external-priority patent/JPS6257000A/en
Priority claimed from JP60197254A external-priority patent/JPS6256999A/en
Priority claimed from JP61061726A external-priority patent/JPS62217296A/en
Priority claimed from JP61089138A external-priority patent/JPS62244100A/en
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to GB8822390A priority Critical patent/GB2208023B/en
Publication of GB8822390D0 publication Critical patent/GB8822390D0/en
Publication of GB2208023A publication Critical patent/GB2208023A/en
Application granted granted Critical
Publication of GB2208023B publication Critical patent/GB2208023B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10L15/00—Speech recognition
    • 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
    • G10L25/87—Detection of discrete points within a voice signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

A voice or sound recognition system includes a microphone (1) for converting a voice into an electrical voice signal, processing means (12, 13) for generating a voice pattern in the form of a time-frequency distribution, and an identifying unit (17) for matching the voice pattern with registered voice patterns. The processing means (13) also provides a voice power signal which is supplied to a voice interval detector (14) and also to a power calculator (15) where the power signal is added frame by frame when the voice power signal exceeds a threshold. The added result is then supplied to a comparator (16) where it is compared with upper and lower reference values, and a cancel signal for cancelling the further processing of the current voice pattern is supplied to the identifying unit (17) when the added result is outside the range between the upper and lower reference values. <IMAGE>
GB8822390A 1985-09-06 1988-09-23 Voice recognition system Expired GB2208023B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8822390A GB2208023B (en) 1985-09-06 1988-09-23 Voice recognition system

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP19725585A JPS6257000A (en) 1985-09-06 1985-09-06 Voice recognition equipment
JP60197254A JPS6256999A (en) 1985-09-06 1985-09-06 Pattern registration system
JP61061726A JPS62217296A (en) 1986-03-19 1986-03-19 Input cancellation of voice recognition equipment
JP61089138A JPS62244100A (en) 1986-04-17 1986-04-17 Voice section detecting system
GB8822390A GB2208023B (en) 1985-09-06 1988-09-23 Voice recognition system

Publications (3)

Publication Number Publication Date
GB8822390D0 GB8822390D0 (en) 1988-10-26
GB2208023A GB2208023A (en) 1989-02-15
GB2208023B true GB2208023B (en) 1989-08-16

Family

ID=27516849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8822390A Expired GB2208023B (en) 1985-09-06 1988-09-23 Voice recognition system

Country Status (1)

Country Link
GB (1) GB2208023B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019186403A1 (en) * 2018-03-29 2019-10-03 3M Innovative Properties Company Voice-activated sound encoding for headsets using frequency domain representations of microphone signals

Also Published As

Publication number Publication date
GB2208023A (en) 1989-02-15
GB8822390D0 (en) 1988-10-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020904