JPS5673922A - Discrimination circuit for voice waveform - Google Patents

Discrimination circuit for voice waveform

Info

Publication number
JPS5673922A
JPS5673922A JP15103479A JP15103479A JPS5673922A JP S5673922 A JPS5673922 A JP S5673922A JP 15103479 A JP15103479 A JP 15103479A JP 15103479 A JP15103479 A JP 15103479A JP S5673922 A JPS5673922 A JP S5673922A
Authority
JP
Japan
Prior art keywords
circuit
voice
voice waveform
monostable multivibrator
time
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.)
Pending
Application number
JP15103479A
Other languages
Japanese (ja)
Inventor
Haruhiko Adachi
Kiyoyuki Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15103479A priority Critical patent/JPS5673922A/en
Publication of JPS5673922A publication Critical patent/JPS5673922A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

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)
  • Pulse Circuits (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To obtain the circuit less in malfunction and simple in the constitution, by sectioning voice waveform in time, as the discrimination of voice waveform. CONSTITUTION:Gate circuits G1, G2, a capacitor and a resistance R constitute a monostable multivibrator, and transistor Q1, Q2 and resistance constitute a Schmitt trigger circuit. When a voice is input, after it is wave-shaped, it is fed to the input of an AND circuit G4 via the monostable multivibrator or an inverter G3. The output of the AND gate G4 is obtained, only when the output width of the Schmitt circuit is longer than the reference time of the monostable multivibrator. Accordingly, short time signals such as noise are rejected, and signals which have long duration time such as voice can be passed.
JP15103479A 1979-11-20 1979-11-20 Discrimination circuit for voice waveform Pending JPS5673922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15103479A JPS5673922A (en) 1979-11-20 1979-11-20 Discrimination circuit for voice waveform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15103479A JPS5673922A (en) 1979-11-20 1979-11-20 Discrimination circuit for voice waveform

Publications (1)

Publication Number Publication Date
JPS5673922A true JPS5673922A (en) 1981-06-19

Family

ID=15509847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15103479A Pending JPS5673922A (en) 1979-11-20 1979-11-20 Discrimination circuit for voice waveform

Country Status (1)

Country Link
JP (1) JPS5673922A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830695A (en) * 1981-08-17 1983-02-23 Oki Electric Ind Co Ltd Voice responsive time piece
JPS6120100A (en) * 1984-07-09 1986-01-28 有限会社セイブ開発 Microphone switch
JPH054613A (en) * 1990-09-01 1993-01-14 Ostma Mas Bau Gmbh Method for packaging collected articles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135269A (en) * 1974-09-20 1976-03-25 Hitachi Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135269A (en) * 1974-09-20 1976-03-25 Hitachi Ltd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830695A (en) * 1981-08-17 1983-02-23 Oki Electric Ind Co Ltd Voice responsive time piece
JPS6120100A (en) * 1984-07-09 1986-01-28 有限会社セイブ開発 Microphone switch
JPH054613A (en) * 1990-09-01 1993-01-14 Ostma Mas Bau Gmbh Method for packaging collected articles

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