JPS5721118A - Digital filter device - Google Patents
Digital filter deviceInfo
- Publication number
- JPS5721118A JPS5721118A JP9635480A JP9635480A JPS5721118A JP S5721118 A JPS5721118 A JP S5721118A JP 9635480 A JP9635480 A JP 9635480A JP 9635480 A JP9635480 A JP 9635480A JP S5721118 A JPS5721118 A JP S5721118A
- Authority
- JP
- Japan
- Prior art keywords
- coefficients
- digital filter
- rom6
- latch
- addressed
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/04—Recursive filters
- H03H17/0405—Recursive filters comprising a ROM addressed by the input and output data signals
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Filters That Use Time-Delay Elements (AREA)
Abstract
PURPOSE:To reduce the transient effect at coefficient switching, by initially setting a digital filter device in switching the coefficients of prestored transfer function. CONSTITUTION:A digital filter consists of adders 1, 2, multipliers 4, 5, 8, 9, 10, ROM6 storing the coefficients of a transfer function, a coincidence detection circuit 11, a latch 16 and a comparison circuit 17. The ROM6 is addressed with a cut-off frequency data from the latch 16, and coefficients a1, a2, b1, b2, (k) are applied to each multiplier. In changing the coefficients, a new cut-off frequency data is stored in the latch 16 with a read-in control signal R from the coincidence circuit 11, the ROM6 is addressed with the output and the coefficients are switched. At the same time, an output CL of the comparison circuit 17 clears delay circuits 3, 7 and initially sets this digital filter. Thus, the transient effect at coefficient switching can be decreased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9635480A JPS5721118A (en) | 1980-07-15 | 1980-07-15 | Digital filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9635480A JPS5721118A (en) | 1980-07-15 | 1980-07-15 | Digital filter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5721118A true JPS5721118A (en) | 1982-02-03 |
| JPS6337973B2 JPS6337973B2 (en) | 1988-07-27 |
Family
ID=14162653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9635480A Granted JPS5721118A (en) | 1980-07-15 | 1980-07-15 | Digital filter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721118A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288414A (en) * | 1985-10-11 | 1987-04-22 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Filter for suppressing energy in frequency varied along withthe rogress of time |
| JPH01136408A (en) * | 1987-11-24 | 1989-05-29 | Oki Electric Ind Co Ltd | Initial setting system for data ram |
| JPH01300712A (en) * | 1988-05-30 | 1989-12-05 | Sony Corp | Frequency characteristic control circuit |
| JPH04139909A (en) * | 1990-09-29 | 1992-05-13 | Shimadzu Corp | Digital filter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102542037B1 (en) * | 2019-09-26 | 2023-06-12 | 주식회사 루닛 | Training method for specializing artificial intelligence model in deployed institution, and apparatus for training the artificial intelligence model |
-
1980
- 1980-07-15 JP JP9635480A patent/JPS5721118A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288414A (en) * | 1985-10-11 | 1987-04-22 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | Filter for suppressing energy in frequency varied along withthe rogress of time |
| EP0218861A2 (en) * | 1985-10-11 | 1987-04-22 | International Business Machines Corporation | Adaptive stop-notch filter |
| JPH01136408A (en) * | 1987-11-24 | 1989-05-29 | Oki Electric Ind Co Ltd | Initial setting system for data ram |
| JPH01300712A (en) * | 1988-05-30 | 1989-12-05 | Sony Corp | Frequency characteristic control circuit |
| JPH04139909A (en) * | 1990-09-29 | 1992-05-13 | Shimadzu Corp | Digital filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6337973B2 (en) | 1988-07-27 |
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