IT1250938B - MOBILE MEDIA ADAPTIVE FILTER. - Google Patents
MOBILE MEDIA ADAPTIVE FILTER.Info
- Publication number
- IT1250938B IT1250938B ITRM910786A ITRM910786A IT1250938B IT 1250938 B IT1250938 B IT 1250938B IT RM910786 A ITRM910786 A IT RM910786A IT RM910786 A ITRM910786 A IT RM910786A IT 1250938 B IT1250938 B IT 1250938B
- Authority
- IT
- Italy
- Prior art keywords
- value
- filter
- moving average
- filter constant
- signal sample
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title 1
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 title 1
- 238000000034 method Methods 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 1
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
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/026—Averaging filters
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Data Mining & Analysis (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Bioinformatics & Computational Biology (AREA)
- General Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Operations Research (AREA)
- Probability & Statistics with Applications (AREA)
- Life Sciences & Earth Sciences (AREA)
- Algebra (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Evolutionary Biology (AREA)
- Computer Hardware Design (AREA)
- Complex Calculations (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Feedback Control In General (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
Abstract
Viene descritto un filtro a software che fa lavorare un elaboratore per realizzare un metodo di filtraggio a media mobile. Il metodo comprende il designare una costante di filtro iniziale per controllare il tempo di riposta del filtro, mantenere un valore di segnale a media mobile; trovare un valore di differenza tra il valore di segnale a media mobile e ciascuna nuova ampiezza di campione di segnale prima che la nuova ampiezza di campione di segnale venga incluso nel valore di segnale di media mobile; aggiornare il valore del segnale di media corrente aggiungendo ad esso, ad un tempo in cui si presenta un nuovo campione di segnale, un valore calcolato dividendo il valore di differenza trovato per un nuovo campione di segnale per la costante di filtro iniziale; e quando una molteplicità sequenziale dei valori di differenza trovati manifesta una polarità identica, dividere la costante iniziale del filtro per un fattore intero per creare una costante di filtro di rotta che di conseguenza riduce il tempo di risposta del filtro. Quando, in contrapposizione, un valore di differenza trovato presenta una polarità diversa da un valore di differenza trovato immediatamente precedente, la costante di filtro viene moltiplicata per un fattore intero per aumentare il suo valore, in modo da non superare un valore massimo, al fine di aumentare il tempo di risposta del filtro.A software filter is described which makes a computer work to realize a moving average filtering method. The method comprises designating an initial filter constant to control the filter response time, maintaining a moving average signal value; finding a difference value between the moving average signal value and each new signal sample amplitude before the new signal sample amplitude is included in the moving average signal value; updating the value of the current average signal by adding to it, at a time when a new signal sample occurs, a value calculated by dividing the difference value found by a new signal sample by the initial filter constant; and when a sequential multiplicity of the difference values found exhibits an identical polarity, divide the initial filter constant by an integer factor to create a course filter constant which consequently reduces the response time of the filter. When, in contrast, a difference value found has a different polarity from a difference value found immediately previous, the filter constant is multiplied by an integer factor to increase its value, so as not to exceed a maximum value, in order to increase the response time of the filter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59908790A | 1990-10-17 | 1990-10-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM910786A0 ITRM910786A0 (en) | 1991-10-16 |
ITRM910786A1 ITRM910786A1 (en) | 1993-04-16 |
IT1250938B true IT1250938B (en) | 1995-04-22 |
Family
ID=24398158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM910786A IT1250938B (en) | 1990-10-17 | 1991-10-16 | MOBILE MEDIA ADAPTIVE FILTER. |
Country Status (6)
Country | Link |
---|---|
CA (1) | CA2052600C (en) |
DE (1) | DE4134398C2 (en) |
ES (1) | ES2048066B1 (en) |
FR (1) | FR2668319B1 (en) |
GB (1) | GB2248954B (en) |
IT (1) | IT1250938B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5339335A (en) * | 1992-12-15 | 1994-08-16 | Elsag International B.V. | Method and apparatus for digitally processing and filtering signals in industrial control applications |
US5394744A (en) * | 1994-01-05 | 1995-03-07 | Ford Motor Company | Fault detection using averaging filter with variable response time |
KR101716481B1 (en) | 2016-01-19 | 2017-03-14 | 엘에스산전 주식회사 | Method for controlling operation of moving average filter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1290865A (en) * | 1969-09-24 | 1972-09-27 | ||
DE2734978A1 (en) * | 1977-08-03 | 1979-02-22 | Basf Ag | WINDING SHAFT FOR WINDING SEVERAL TAPES AT THE SAME TIME |
JPS56169923A (en) * | 1980-06-03 | 1981-12-26 | Mitsubishi Electric Corp | Digital low-pass filter device |
GB8418504D0 (en) * | 1984-07-20 | 1984-08-22 | Fiamass Ltd | Functional analysis |
-
1991
- 1991-10-01 GB GB9120778A patent/GB2248954B/en not_active Expired - Lifetime
- 1991-10-01 CA CA002052600A patent/CA2052600C/en not_active Expired - Lifetime
- 1991-10-14 ES ES09102259A patent/ES2048066B1/en not_active Expired - Fee Related
- 1991-10-16 FR FR9112756A patent/FR2668319B1/en not_active Expired - Fee Related
- 1991-10-16 IT ITRM910786A patent/IT1250938B/en active IP Right Grant
- 1991-10-17 DE DE4134398A patent/DE4134398C2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9120778D0 (en) | 1991-11-13 |
DE4134398A1 (en) | 1992-04-23 |
ES2048066A2 (en) | 1994-03-01 |
GB2248954B (en) | 1994-08-24 |
CA2052600A1 (en) | 1992-04-18 |
ES2048066R (en) | 1995-11-16 |
ITRM910786A0 (en) | 1991-10-16 |
GB2248954A (en) | 1992-04-22 |
ES2048066B1 (en) | 1996-07-01 |
ITRM910786A1 (en) | 1993-04-16 |
DE4134398C2 (en) | 1996-02-15 |
CA2052600C (en) | 1995-09-19 |
FR2668319A1 (en) | 1992-04-24 |
FR2668319B1 (en) | 1994-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970910 |