JPS54157457A - Sample value filter - Google Patents
Sample value filterInfo
- Publication number
- JPS54157457A JPS54157457A JP6641378A JP6641378A JPS54157457A JP S54157457 A JPS54157457 A JP S54157457A JP 6641378 A JP6641378 A JP 6641378A JP 6641378 A JP6641378 A JP 6641378A JP S54157457 A JPS54157457 A JP S54157457A
- Authority
- JP
- Japan
- Prior art keywords
- units
- satisfied
- constitution
- filter
- coefficient
- 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
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
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 decrease the number of the elements by analyzing the transmission function of the digital filter into the form of a proper product with its corresponding constitution secured and at the same time inserting a fixed number of the sampling circuit into the intermediate step of the filter. CONSTITUTION:When the tap number of the digital filter is referred to as N, transmission function H (Z) is shown by Eq. 1 where Z = e<jomegat> is satisfied, omega is the angular frequency and ai is the tap coefficient each. Eq. 1 is analyzed to be expressed by Eq. 2 as long as the ratio of ai is identical to each other. In this case, however, N = NO.N' is satisfied. If cO = 1 is satisfied in that constitution, both the adder and the multiplier can be reduced in number down to (NO - 1) + (N' - 1) units and NO + N' - 1 units respectively, with the delay unit reduced down to N - 1 units. Here, sampling circuit RSP is inserted into the intermediate step of the filter, and as a result the delay unit can be reduced greatly down to SIGMA<k>j = 1 (Mj-1) + N' - 1 units, where Mj is the common measure between tap number N and cull-out coefficient and T is the coefficient of the input signal of RSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641378A JPS54157457A (en) | 1978-06-02 | 1978-06-02 | Sample value filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641378A JPS54157457A (en) | 1978-06-02 | 1978-06-02 | Sample value filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54157457A true JPS54157457A (en) | 1979-12-12 |
Family
ID=13315078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6641378A Pending JPS54157457A (en) | 1978-06-02 | 1978-06-02 | Sample value filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54157457A (en) |
-
1978
- 1978-06-02 JP JP6641378A patent/JPS54157457A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3171426D1 (en) | Method and circuit for converting the sampling frequency of a series of samples avoiding conversion into a continuous signal | |
| GB1287390A (en) | Improvements in or relating to digital filters | |
| JPS54157457A (en) | Sample value filter | |
| JPS54131808A (en) | Frequency counter | |
| JPS55163908A (en) | Digital tone control circuit | |
| JPS5360539A (en) | Digital filter | |
| JPS5630316A (en) | Cyclic filter | |
| JPS56149823A (en) | Band pass filter | |
| JPS5516573A (en) | Cyclic variable filter | |
| JPS56120212A (en) | Digital filter of block floating decimal point | |
| JPS56140461A (en) | Picture processing method | |
| SU1501291A1 (en) | Discrete signal interpolator | |
| JPS5632818A (en) | Noncyclic variable filter | |
| JPS5592017A (en) | Digital filter | |
| JPS5377438A (en) | Digital filter | |
| SU959266A1 (en) | Recursive rejection filter | |
| SU1128264A1 (en) | Digital recursive filter | |
| SU907458A1 (en) | Spectral analysis device | |
| JPS5511675A (en) | Digital variable equalizer | |
| JPS5663218A (en) | Transient response analysis method for natural vibration mode | |
| JPS5476049A (en) | Sample-series variable filter | |
| JPS6447113A (en) | Digital filter | |
| BIANCHI et al. | Spectral analysis with an exponential window iterative method: The performance of the signal frequency evaluation(voice signal processing) | |
| SU1485238A1 (en) | Digital differentiator | |
| JPS5680917A (en) | Thinning-out filter for sampled value |