JPS6413262A - Digital sound recording device - Google Patents
Digital sound recording deviceInfo
- Publication number
- JPS6413262A JPS6413262A JP16931387A JP16931387A JPS6413262A JP S6413262 A JPS6413262 A JP S6413262A JP 16931387 A JP16931387 A JP 16931387A JP 16931387 A JP16931387 A JP 16931387A JP S6413262 A JPS6413262 A JP S6413262A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- multiplier
- calculation
- digital signal
- 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
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To automatically make the level of an input analog signal optimum by controlling a multiplication factor value while comparing digitally a signal that the output from an A/D converter is multiplied by a factor with a digital signal containing a reference signal. CONSTITUTION:The digital signal Sd for level comparison is inputted to a level controlling means 40. Besides, the analog signal to be recorded is adjusted by a level adjusting means 13 so as to be somewhat large and after being digitized by the A/D converter, it is inputted to a multiplier 46. The multiplier 46 stores the output signal Sa of itself and the above-mentioned signal Sd for a duration necessitated for calculation and in addition, inputs the signal Sa to the controlling means 40. The means 40 obtains a comparison output corresponding to a level difference for the signal Sd and inputs the new factor value to the multiplier 46 through a factor adjuster 45, and the multiplier 46 executes a calculation for correction and outputs the signal Sa. This calculation is repeated, and when the level of the digital signal of a multiplied result comes optimum, the signal Sa is recorded by a recording part 17 through a round-off circuit 47, a digital signal processing circuit 15 and a high frequency map 16.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16931387A JPH0770155B2 (en) | 1987-07-07 | 1987-07-07 | Digital recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16931387A JPH0770155B2 (en) | 1987-07-07 | 1987-07-07 | Digital recording device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6413262A true JPS6413262A (en) | 1989-01-18 |
JPH0770155B2 JPH0770155B2 (en) | 1995-07-31 |
Family
ID=15884219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16931387A Expired - Fee Related JPH0770155B2 (en) | 1987-07-07 | 1987-07-07 | Digital recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0770155B2 (en) |
-
1987
- 1987-07-07 JP JP16931387A patent/JPH0770155B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0770155B2 (en) | 1995-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |