JPS5790750A - Signal input device - Google Patents

Signal input device

Info

Publication number
JPS5790750A
JPS5790750A JP55166752A JP16675280A JPS5790750A JP S5790750 A JPS5790750 A JP S5790750A JP 55166752 A JP55166752 A JP 55166752A JP 16675280 A JP16675280 A JP 16675280A JP S5790750 A JPS5790750 A JP S5790750A
Authority
JP
Japan
Prior art keywords
peak value
circuit
coefficient
analog signal
signal
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
JP55166752A
Other languages
Japanese (ja)
Inventor
Akio Watanuki
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP55166752A priority Critical patent/JPS5790750A/en
Publication of JPS5790750A publication Critical patent/JPS5790750A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To automatically obtain the optimum level of input for an A/D converter, by exercising level control of an analog signal by the inverse numerical value of the peak value of the analog signal when a reproduced analog signal is turned into a digital signal. CONSTITUTION:When the voice analog signal reproduced through a tape recorder 1 is supplied to a digital coefficient device 2a, the aural signal receives the wave detection through a wave detecting circuit 6 via the device 2a to be turned into the absolute value. The output of the circuit 6 is applied to a peak value detecting circuit 7. Then the circuit 7 detects the peak value within a prescribed period of time, and the peak value signal is applied to a coefficient control circuit 8. Thus the circuit 8 reduces the coefficient of the device 2a when the peak value given from the circuit 7 is set at a high level and increases the coefficient when the peak value is set at a low level respectively. In such a way, the coefficient of the device 2a is automatically varied in accordance with the peak value to exercise level control.
JP55166752A 1980-11-28 1980-11-28 Signal input device Pending JPS5790750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166752A JPS5790750A (en) 1980-11-28 1980-11-28 Signal input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166752A JPS5790750A (en) 1980-11-28 1980-11-28 Signal input device

Publications (1)

Publication Number Publication Date
JPS5790750A true JPS5790750A (en) 1982-06-05

Family

ID=15837077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166752A Pending JPS5790750A (en) 1980-11-28 1980-11-28 Signal input device

Country Status (1)

Country Link
JP (1) JPS5790750A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62279398A (en) * 1986-05-29 1987-12-04 株式会社アルファ Voice recognition equipment
JPH0682700U (en) * 1994-03-30 1994-11-25 株式会社アルファ Voice recognizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62279398A (en) * 1986-05-29 1987-12-04 株式会社アルファ Voice recognition equipment
JPH0682700U (en) * 1994-03-30 1994-11-25 株式会社アルファ Voice recognizer

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