JPS57120206A - Method and device for sound reproduction - Google Patents

Method and device for sound reproduction

Info

Publication number
JPS57120206A
JPS57120206A JP56004341A JP434181A JPS57120206A JP S57120206 A JPS57120206 A JP S57120206A JP 56004341 A JP56004341 A JP 56004341A JP 434181 A JP434181 A JP 434181A JP S57120206 A JPS57120206 A JP S57120206A
Authority
JP
Japan
Prior art keywords
speed
signal
reproduction
converter
gate
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.)
Granted
Application number
JP56004341A
Other languages
Japanese (ja)
Other versions
JPH0239035B2 (en
Inventor
Takuji Suzuki
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.)
Fujitsu General Ltd
Aerojet Rocketdyne Holdings Inc
Original Assignee
Fujitsu General Ltd
Gencorp Inc
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 Fujitsu General Ltd, Gencorp Inc filed Critical Fujitsu General Ltd
Priority to JP56004341A priority Critical patent/JPS57120206A/en
Publication of JPS57120206A publication Critical patent/JPS57120206A/en
Publication of JPH0239035B2 publication Critical patent/JPH0239035B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To decrease a reproduction speed while maintaining a natural sound, by storing a signal, reproduced at a speed 1/n as high as a tape speed in recording, on a recording element, by reading the signal at an (n)-fold speed and repeatedly voicing it (n) times, and then reproducing one next cycle. CONSTITUTION:The speed of a tape driving motor 1 is set a half that in normal reproduction. A reproduction output from a reproucing head 3 is stored in a constant-speed memory 6 through an amplifier 4 and an AD converter 5. The output of this constant-speed memory 6 is sent a constant time after the start of the storage at a period a half that in reproduction. In the 1st one cycle, it is passed through a fundamental-wave gate 7 as it is and then reconverted into an analog signal by a DA converter 10. When a zero potential and a change direction are detected from a voice waveform by detecting circuits 13 and 14, a signal which has the same waveform with said signal is outputted as a replication signal from a modulative memory 8. The outputs of the detecting circuits 13 and 14 close a gate 7 and open a gate 9, so the replication signal is sent to the DA converter 10, thereby repeating the same waveform.
JP56004341A 1981-01-14 1981-01-14 Method and device for sound reproduction Granted JPS57120206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56004341A JPS57120206A (en) 1981-01-14 1981-01-14 Method and device for sound reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56004341A JPS57120206A (en) 1981-01-14 1981-01-14 Method and device for sound reproduction

Publications (2)

Publication Number Publication Date
JPS57120206A true JPS57120206A (en) 1982-07-27
JPH0239035B2 JPH0239035B2 (en) 1990-09-03

Family

ID=11581727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56004341A Granted JPS57120206A (en) 1981-01-14 1981-01-14 Method and device for sound reproduction

Country Status (1)

Country Link
JP (1) JPS57120206A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48100106A (en) * 1972-03-31 1973-12-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48100106A (en) * 1972-03-31 1973-12-18

Also Published As

Publication number Publication date
JPH0239035B2 (en) 1990-09-03

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