JPS6460105A - Device for adjusting digital sound volume - Google Patents
Device for adjusting digital sound volumeInfo
- Publication number
- JPS6460105A JPS6460105A JP21724087A JP21724087A JPS6460105A JP S6460105 A JPS6460105 A JP S6460105A JP 21724087 A JP21724087 A JP 21724087A JP 21724087 A JP21724087 A JP 21724087A JP S6460105 A JPS6460105 A JP S6460105A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- digit
- signal
- sound volume
- digit number
- 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
Links
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To attain sound volume adjustment at a low cost and to have a wide adjusting range and a little distortion by causing the digit number of a digital analog converter to be larger than the digit number of a digital audio input signal. CONSTITUTION:The title device equips with an attenuating coefficient generating circuit 9 to output the signal of an attenuating coefficient K of a (k) digit and a digital multiplier 8 to multiply the digital audio input signal of an (n) digit and a digital attenuating coefficient signal and to output a digital signal. Further, an (m) digit digital analog converter 2 to convert the output of the multiplier 8 to an analog signal is equipped and this device is constituted so that the relation of the digit number can be n<m<n+k. Thus, the losing of a dynamic range due to the increasing of attenuating quantity can be decreased and the increasing of the digit number of the digital analog converter is comparatively small. Thus, the sound volume adjustment of the low cost can be executed to have the wide adjusting range and a little distortion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21724087A JPS6460105A (en) | 1987-08-31 | 1987-08-31 | Device for adjusting digital sound volume |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21724087A JPS6460105A (en) | 1987-08-31 | 1987-08-31 | Device for adjusting digital sound volume |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6460105A true JPS6460105A (en) | 1989-03-07 |
Family
ID=16701048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21724087A Pending JPS6460105A (en) | 1987-08-31 | 1987-08-31 | Device for adjusting digital sound volume |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6460105A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02280532A (en) * | 1989-04-21 | 1990-11-16 | Nec Corp | Signal attenuator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489511A (en) * | 1977-12-27 | 1979-07-16 | Toshiba Corp | Level regulator on digital control system |
JPS58146114A (en) * | 1982-02-25 | 1983-08-31 | Hitachi Ltd | Level controlling circuit |
JPS58150309A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Digital amplitude controller |
-
1987
- 1987-08-31 JP JP21724087A patent/JPS6460105A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5489511A (en) * | 1977-12-27 | 1979-07-16 | Toshiba Corp | Level regulator on digital control system |
JPS58146114A (en) * | 1982-02-25 | 1983-08-31 | Hitachi Ltd | Level controlling circuit |
JPS58150309A (en) * | 1982-03-02 | 1983-09-07 | Matsushita Electric Ind Co Ltd | Digital amplitude controller |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02280532A (en) * | 1989-04-21 | 1990-11-16 | Nec Corp | Signal attenuator |
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