JPS5680908A - Audio pcm amplifier - Google Patents

Audio pcm amplifier

Info

Publication number
JPS5680908A
JPS5680908A JP15856779A JP15856779A JPS5680908A JP S5680908 A JPS5680908 A JP S5680908A JP 15856779 A JP15856779 A JP 15856779A JP 15856779 A JP15856779 A JP 15856779A JP S5680908 A JPS5680908 A JP S5680908A
Authority
JP
Japan
Prior art keywords
output
converter
block
digital
analog
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
JP15856779A
Other languages
Japanese (ja)
Inventor
Kentaro Odaka
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 JP15856779A priority Critical patent/JPS5680908A/en
Publication of JPS5680908A publication Critical patent/JPS5680908A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To enable the quantized noise of an analog output to maintain the value of an original signal by converting PCM data into an analog signal by a D/A converter and then by supplying the analog signal to a loudspeaker via an amplifier. CONSTITUTION:PCM data is inputted to digital filter block 64 to exercise tone control, etc., under digital control. On the other hand, level regulation block 65 is provided in parallel to this block 64 to obtain a digital output for level regulation through the digital control. Then, multiplication type D-A converter 67 is provided so as to convert the digital output of block 64 into an analog output. In addition, the digital output of block 65 is converted 66 into an analog output. Then, the output of converter 66 is applied to converter 67 as a reference voltage. Therefore, the output of converter 67 is equal to the product of outputs of blocks 64 and 65, but the quantized nois of the analog output can maintain the value of the original signal.
JP15856779A 1979-12-06 1979-12-06 Audio pcm amplifier Pending JPS5680908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15856779A JPS5680908A (en) 1979-12-06 1979-12-06 Audio pcm amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15856779A JPS5680908A (en) 1979-12-06 1979-12-06 Audio pcm amplifier

Publications (1)

Publication Number Publication Date
JPS5680908A true JPS5680908A (en) 1981-07-02

Family

ID=15674510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15856779A Pending JPS5680908A (en) 1979-12-06 1979-12-06 Audio pcm amplifier

Country Status (1)

Country Link
JP (1) JPS5680908A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385008A (en) * 1989-08-28 1991-04-10 Alpine Electron Inc Audio equipment
JPH053115U (en) * 1991-06-25 1993-01-19 十條製紙株式会社 Paper container for storing liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385008A (en) * 1989-08-28 1991-04-10 Alpine Electron Inc Audio equipment
JPH053115U (en) * 1991-06-25 1993-01-19 十條製紙株式会社 Paper container for storing liquid

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