JPS5632818A - Noncyclic variable filter - Google Patents
Noncyclic variable filterInfo
- Publication number
- JPS5632818A JPS5632818A JP10956879A JP10956879A JPS5632818A JP S5632818 A JPS5632818 A JP S5632818A JP 10956879 A JP10956879 A JP 10956879A JP 10956879 A JP10956879 A JP 10956879A JP S5632818 A JPS5632818 A JP S5632818A
- Authority
- JP
- Japan
- Prior art keywords
- output
- adder
- transfer function
- plane
- multiplier
- 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
- H03H17/06—Non-recursive filters
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 make it possible to vary filter characteristics by constituting a filter whose transfer function G*(Z) as to the Z plane is expressed by a specific formula and then by varying a variable coefficient in the above-mentioned specific formula. CONSTITUTION:Input terminal 11 is connected to the input side of delay unit 1N-2 among the (N-1)-number cascaded delay units 1N-2-11 with a time lag of T seconds equal to the sampling period of an input signal. The (N-1)-number arithmetic stages 2N-2-20 consisting of variable multiplier 12 that provides multiplication by variable coefficient K* of the filter whose transfer function G*(Z) as to the Z plane is shown by the formula and adder 15 that performs addition between the multiplication output passed through the series circuit of delay units 13 and 14 of T seconds in time lag and that arriving without passing through the circuit are cascaded while multiplier 12 and adder 15 are regarded as the output and the input side respectively. The output of adder 15 of arithmetic stage 20 is supplied to output terminal 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10956879A JPS5632818A (en) | 1979-08-27 | 1979-08-27 | Noncyclic variable filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10956879A JPS5632818A (en) | 1979-08-27 | 1979-08-27 | Noncyclic variable filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5632818A true JPS5632818A (en) | 1981-04-02 |
| JPS6318368B2 JPS6318368B2 (en) | 1988-04-18 |
Family
ID=14513534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10956879A Granted JPS5632818A (en) | 1979-08-27 | 1979-08-27 | Noncyclic variable filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5632818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236210A (en) * | 1985-04-05 | 1986-10-21 | ザ・グラス・バレー・グループ・インコーポレイテッド | Variable pass band filter apparatus |
| JP2019004228A (en) * | 2017-06-12 | 2019-01-10 | 日本電信電話株式会社 | Wavelength dispersion compensation filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476048A (en) * | 1977-11-30 | 1979-06-18 | Nec Corp | Noncyclic variable filter |
-
1979
- 1979-08-27 JP JP10956879A patent/JPS5632818A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476048A (en) * | 1977-11-30 | 1979-06-18 | Nec Corp | Noncyclic variable filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236210A (en) * | 1985-04-05 | 1986-10-21 | ザ・グラス・バレー・グループ・インコーポレイテッド | Variable pass band filter apparatus |
| JP2019004228A (en) * | 2017-06-12 | 2019-01-10 | 日本電信電話株式会社 | Wavelength dispersion compensation filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6318368B2 (en) | 1988-04-18 |
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