JPS5463604A - Time base compressor of sound - Google Patents

Time base compressor of sound

Info

Publication number
JPS5463604A
JPS5463604A JP12993477A JP12993477A JPS5463604A JP S5463604 A JPS5463604 A JP S5463604A JP 12993477 A JP12993477 A JP 12993477A JP 12993477 A JP12993477 A JP 12993477A JP S5463604 A JPS5463604 A JP S5463604A
Authority
JP
Japan
Prior art keywords
signals
sound
period
signal
recording
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
JP12993477A
Other languages
Japanese (ja)
Inventor
Yuji Doi
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP12993477A priority Critical patent/JPS5463604A/en
Publication of JPS5463604A publication Critical patent/JPS5463604A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE: To obtain a compatibility with normal devices with making the compression of time base possible and reproducing sound signals in a speed higher than recording by thinning sound signals with a time area and recording sound after the change of frequency bands.
CONSTITUTION: Sound signals are led into BBD5 and 6 alternately through LPF3 below 7K Hz and switch 4, which is switched at period T3, after amplification 2 and are stored by signal S1 of sampling period T1 and are read out by signal S2 of read period T2. At a read time, SW7 operates in a phase opposite to SW4 by signal S, and signals read out from BBD5 or 6 are recorded on tape 11 through SW7, LPF8, amplifier 9 and head 10. Here, the frequency band of signals is compressed to T1/T2 times by setting the relation of period T1<T2.Then, the reproducing in a speed higher than recording brings signals of the original frequency band.
COPYRIGHT: (C)1979,JPO&Japio
JP12993477A 1977-10-28 1977-10-28 Time base compressor of sound Pending JPS5463604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12993477A JPS5463604A (en) 1977-10-28 1977-10-28 Time base compressor of sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12993477A JPS5463604A (en) 1977-10-28 1977-10-28 Time base compressor of sound

Publications (1)

Publication Number Publication Date
JPS5463604A true JPS5463604A (en) 1979-05-22

Family

ID=15022029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12993477A Pending JPS5463604A (en) 1977-10-28 1977-10-28 Time base compressor of sound

Country Status (1)

Country Link
JP (1) JPS5463604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805217A (en) * 1984-09-26 1989-02-14 Mitsubishi Denki Kabushiki Kaisha Receiving set with playback function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805217A (en) * 1984-09-26 1989-02-14 Mitsubishi Denki Kabushiki Kaisha Receiving set with playback function

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