JPS6441363A - Digital signal generator - Google Patents
Digital signal generatorInfo
- Publication number
- JPS6441363A JPS6441363A JP19732787A JP19732787A JPS6441363A JP S6441363 A JPS6441363 A JP S6441363A JP 19732787 A JP19732787 A JP 19732787A JP 19732787 A JP19732787 A JP 19732787A JP S6441363 A JPS6441363 A JP S6441363A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- digital signal
- sampling
- prescribed
- post
- 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
Abstract
PURPOSE:To reduce the adverse effect due to loopback noise by sampling a signal controlling a level of a digital signal in a prescribed sampling frequency and holding it for a prescribed time only. CONSTITUTION:In forming a digital signal by an up-down counter 80, the same operation as the sampling by a clock frequency fc is obtained and new frequency components fc-fa,fc+fa, 2fc-fa, 2fc+fa... are produced in addition to the fundamental wave frequency fa. In sampling a digital signal including the new frequency component at a prescribed frequency at a sample-and-hold circuit 45 of the post-stage, further new frequency components are produced based thereupon. Since the clock frequency fc in the up-down counter 80 is an integral number of multiple of the sampling frequency of the sample-and-hold circuit 45 at the post-stage, the loopback noise component is overlapped on the fundamental wave frequency and no abnormal sound is sensed. Thus, the quality of the signal tone in a prescribed band obtained by applying D/A conversion to the digital signal is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19732787A JPH0783416B2 (en) | 1987-08-07 | 1987-08-07 | Digital signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19732787A JPH0783416B2 (en) | 1987-08-07 | 1987-08-07 | Digital signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6441363A true JPS6441363A (en) | 1989-02-13 |
JPH0783416B2 JPH0783416B2 (en) | 1995-09-06 |
Family
ID=16372622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19732787A Expired - Fee Related JPH0783416B2 (en) | 1987-08-07 | 1987-08-07 | Digital signal generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0783416B2 (en) |
-
1987
- 1987-08-07 JP JP19732787A patent/JPH0783416B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0783416B2 (en) | 1995-09-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |