JPS56131238A - Pcm system processor - Google Patents

Pcm system processor

Info

Publication number
JPS56131238A
JPS56131238A JP3534980A JP3534980A JPS56131238A JP S56131238 A JPS56131238 A JP S56131238A JP 3534980 A JP3534980 A JP 3534980A JP 3534980 A JP3534980 A JP 3534980A JP S56131238 A JPS56131238 A JP S56131238A
Authority
JP
Japan
Prior art keywords
input
amplitude
input signal
output
system processor
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
JP3534980A
Other languages
Japanese (ja)
Inventor
Yuichi Mori
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 JP3534980A priority Critical patent/JPS56131238A/en
Publication of JPS56131238A publication Critical patent/JPS56131238A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To improve the sound quality of a PCM system processor by limiting the amplitude of an input analog signal so that the input signal does not exceed the permissible value of a voltage inputted to an AD converter. CONSTITUTION:Amplitude limiter 10 is that provided in front of LPF1 and limits the amplitude of an input analog signal so that the input signal does not exceed the permissible value of an input voltage to AD converter 3. In this case, when input signal Vin is between Vm and +Vm, output Vout appears as it is and once the absolute value of input signal Vin exceeds Vm, the output amplitude is kept constant as output Vm. Consequently, the sound quality can be improved by preventing a usually generated return noise at the time of an excessive input noise.
JP3534980A 1980-03-18 1980-03-18 Pcm system processor Pending JPS56131238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3534980A JPS56131238A (en) 1980-03-18 1980-03-18 Pcm system processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3534980A JPS56131238A (en) 1980-03-18 1980-03-18 Pcm system processor

Publications (1)

Publication Number Publication Date
JPS56131238A true JPS56131238A (en) 1981-10-14

Family

ID=12439377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3534980A Pending JPS56131238A (en) 1980-03-18 1980-03-18 Pcm system processor

Country Status (1)

Country Link
JP (1) JPS56131238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161944A (en) * 1983-02-23 1984-09-12 ジ−メンス・アクチエンゲゼルシヤフト Dpcm coder quantizing circuit
JPH01115224A (en) * 1987-10-29 1989-05-08 Matsushita Electric Ind Co Ltd Input protective device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161944A (en) * 1983-02-23 1984-09-12 ジ−メンス・アクチエンゲゼルシヤフト Dpcm coder quantizing circuit
JPH01115224A (en) * 1987-10-29 1989-05-08 Matsushita Electric Ind Co Ltd Input protective device

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