JPS648557A - Type reproducing device - Google Patents

Type reproducing device

Info

Publication number
JPS648557A
JPS648557A JP16343787A JP16343787A JPS648557A JP S648557 A JPS648557 A JP S648557A JP 16343787 A JP16343787 A JP 16343787A JP 16343787 A JP16343787 A JP 16343787A JP S648557 A JPS648557 A JP S648557A
Authority
JP
Japan
Prior art keywords
signal
component
reproduced
suppressed
audio 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
JP16343787A
Other languages
Japanese (ja)
Inventor
Makoto Niino
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP16343787A priority Critical patent/JPS648557A/en
Publication of JPS648557A publication Critical patent/JPS648557A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To obtain an audio signal suppressed in its carrier component even in case of a slower tape speed than recording by converting a reproduced RWM signal to a saw tooth signal and holding a sample as well. CONSTITUTION:The peak value of a saw tooth wave signal voltage Vs converted from the PWM signal Pw is sampled and then held by 100% over one cycle period of the signal Pw until the next peak to demodulate the audio signal Ss. Consequently, the signal Ss possesses the filter characteristics of sin x/x, and a carrier point becomes a nul point, so that the signal component Sa is automatically eliminated. By this method, even when the frequency of the PWM signal Pw reproduced by hand-cuing is lowered as shown in the figure B, the audio signal Ss suppressed of noise by the signal component Sa can be obtained.
JP16343787A 1987-06-30 1987-06-30 Type reproducing device Pending JPS648557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16343787A JPS648557A (en) 1987-06-30 1987-06-30 Type reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16343787A JPS648557A (en) 1987-06-30 1987-06-30 Type reproducing device

Publications (1)

Publication Number Publication Date
JPS648557A true JPS648557A (en) 1989-01-12

Family

ID=15773873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16343787A Pending JPS648557A (en) 1987-06-30 1987-06-30 Type reproducing device

Country Status (1)

Country Link
JP (1) JPS648557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04157916A (en) * 1990-10-22 1992-05-29 Matsushita Electric Ind Co Ltd Pulse width demodulator
JP2003028301A (en) * 2001-07-19 2003-01-29 Taiho Kogyo Co Ltd Metallic gasket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04157916A (en) * 1990-10-22 1992-05-29 Matsushita Electric Ind Co Ltd Pulse width demodulator
JP2003028301A (en) * 2001-07-19 2003-01-29 Taiho Kogyo Co Ltd Metallic gasket

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