JPS561697A - Mixing process circuit for digital signal - Google Patents

Mixing process circuit for digital signal

Info

Publication number
JPS561697A
JPS561697A JP7660479A JP7660479A JPS561697A JP S561697 A JPS561697 A JP S561697A JP 7660479 A JP7660479 A JP 7660479A JP 7660479 A JP7660479 A JP 7660479A JP S561697 A JPS561697 A JP S561697A
Authority
JP
Japan
Prior art keywords
output
channel
digital signal
adder
ram10
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
JP7660479A
Other languages
Japanese (ja)
Other versions
JPS6138919B2 (en
Inventor
Masao Kasuga
Masaaki Sato
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP7660479A priority Critical patent/JPS561697A/en
Publication of JPS561697A publication Critical patent/JPS561697A/en
Publication of JPS6138919B2 publication Critical patent/JPS6138919B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stereophonic System (AREA)

Abstract

PURPOSE:To prevent the shift of the sound image due to the level variation in a simple constitution, by delivering the compound signal of each digital signal of the multi-channel which received the mixing-down to the channel number smaller than the multi-channel number through the output register. CONSTITUTION:The signals of digital signal input terminals 91-9p of each channel are applied to RAM10 and then held at each address of RAM10 to be read out in sequence via the control signal from control circuit 11 and then supplied to multiplier 14. On the other hand, the control is given to ROM23 with the output of control circuit 12 and in synchronization with the output of circuit 11, and the digital signal of each channel from RAM10 is multiplied at multiplier 14 by the coefficient for level variation of each channel. Then the output of multiplier 14 is applied to adder 15, and the output of adder 15 is applied to adder 15 via register 16. And RAM17 using the output of adder 15 for the input is read by the control signal of circuit 11. Thus the shift of the sound image due to the level variation can be prevented in a simple constitution.
JP7660479A 1979-06-18 1979-06-18 Mixing process circuit for digital signal Granted JPS561697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7660479A JPS561697A (en) 1979-06-18 1979-06-18 Mixing process circuit for digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7660479A JPS561697A (en) 1979-06-18 1979-06-18 Mixing process circuit for digital signal

Publications (2)

Publication Number Publication Date
JPS561697A true JPS561697A (en) 1981-01-09
JPS6138919B2 JPS6138919B2 (en) 1986-09-01

Family

ID=13609926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7660479A Granted JPS561697A (en) 1979-06-18 1979-06-18 Mixing process circuit for digital signal

Country Status (1)

Country Link
JP (1) JPS561697A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01220269A (en) * 1988-02-29 1989-09-01 Matsushita Electric Ind Co Ltd Digital sound multiplex recorder
US5790678A (en) * 1994-10-17 1998-08-04 Ati Technologies Incorporated Digital audio processing in a modified bitBLT controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01220269A (en) * 1988-02-29 1989-09-01 Matsushita Electric Ind Co Ltd Digital sound multiplex recorder
US5790678A (en) * 1994-10-17 1998-08-04 Ati Technologies Incorporated Digital audio processing in a modified bitBLT controller

Also Published As

Publication number Publication date
JPS6138919B2 (en) 1986-09-01

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