DK89076A - Indretning til beregning af fourierkoefficienter - Google Patents

Indretning til beregning af fourierkoefficienter

Info

Publication number
DK89076A
DK89076A DK89076*#A DK89076A DK89076A DK 89076 A DK89076 A DK 89076A DK 89076 A DK89076 A DK 89076A DK 89076 A DK89076 A DK 89076A
Authority
DK
Denmark
Prior art keywords
fourier coefficients
calculating fourier
calculating
coefficients
fourier
Prior art date
Application number
DK89076*#A
Other languages
English (en)
Other versions
DK144629B (da
DK144629C (da
Inventor
G Bonnerot
Original Assignee
Trt Telecom Radio Electr
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Trt Telecom Radio Electr filed Critical Trt Telecom Radio Electr
Publication of DK89076A publication Critical patent/DK89076A/da
Publication of DK144629B publication Critical patent/DK144629B/da
Application granted granted Critical
Publication of DK144629C publication Critical patent/DK144629C/da

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141—Discrete Fourier transforms
    • G06F17/142—Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
DK89076A 1975-03-05 1976-03-02 Kredsloeb til beregning af fourierkoefficienter ud fra digitale eksempleringer af et reelt og symmetrisk signal og til beregning af digitale eksempleringer ud fra en symmetrisk sekvensaf koefficienter DK144629C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7506861 1975-03-05
FR7506861A FR2303326A1 (fr) 1975-03-05 1975-03-05 Dispositif de calcul de transformee de fourier discrete

Publications (3)

Publication Number Publication Date
DK89076A true DK89076A (da) 1976-09-06
DK144629B DK144629B (da) 1982-04-19
DK144629C DK144629C (da) 1982-09-20

Family

ID=9152138

Family Applications (1)

Application Number Title Priority Date Filing Date
DK89076A DK144629C (da) 1975-03-05 1976-03-02 Kredsloeb til beregning af fourierkoefficienter ud fra digitale eksempleringer af et reelt og symmetrisk signal og til beregning af digitale eksempleringer ud fra en symmetrisk sekvensaf koefficienter

Country Status (12)

Country Link
US (1) US4051357A (da)
JP (1) JPS51112242A (da)
AU (1) AU500735B2 (da)
BE (1) BE839153A (da)
CA (1) CA1057400A (da)
CH (1) CH627010A5 (da)
DE (1) DE2608515C2 (da)
DK (1) DK144629C (da)
FR (1) FR2303326A1 (da)
GB (1) GB1540883A (da)
NL (1) NL7602083A (da)
SE (1) SE406254B (da)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597990B2 (ja) * 1976-10-06 1984-02-22 日本電気株式会社 Ｎ点離散的フ−リエ変換演算装置
US4156920A (en) * 1977-06-30 1979-05-29 International Business Machines Corporation Computer system architecture for performing nested loop operations to effect a discrete Fourier transform
FR2427743A1 (fr) * 1978-05-29 1979-12-28 Trt Telecom Radio Electr Dispositif de surveillance d'un transmultiplexeur
JPS582174U (ja) * 1981-06-27 1983-01-08 日産自動車株式会社 車体サイドメンバの結合部構造
US4689762A (en) * 1984-09-10 1987-08-25 Sanders Associates, Inc. Dynamically configurable fast Fourier transform butterfly circuit
US4984189A (en) * 1985-04-03 1991-01-08 Nec Corporation Digital data processing circuit equipped with full bit string reverse control circuit and shifter to perform full or partial bit string reverse operation and data shift operation
US5987005A (en) * 1997-07-02 1999-11-16 Telefonaktiebolaget Lm Ericsson Method and apparatus for efficient computation of discrete fourier transform (DFT) and inverse discrete fourier transform
US6169723B1 (en) 1997-07-02 2001-01-02 Telefonaktiebolaget Lm Ericsson Computationally efficient analysis and synthesis of real signals using discrete fourier transforms and inverse discrete fourier transforms
FR2772160B1 (fr) * 1997-12-08 2001-10-05 France Telecom Circuit de calcul de la transformee de fourier rapide et de la transformee de fourier rapide inverse
US6351759B1 (en) * 1999-02-26 2002-02-26 Trw Inc. Digital channelizer having efficient architecture for discrete fourier transformation and operation thereof
US7203717B1 (en) 1999-10-30 2007-04-10 Stmicroelectronics Asia Pacific Pte. Ltd. Fast modified discrete cosine transform method
ATE544998T1 (de) * 2003-05-23 2012-02-15 Ra Brands Llc Verschlussanordnung mit verriegelungssystem
GB2514595B (en) * 2013-05-30 2017-10-18 Imp Innovations Ltd Method and apparatus for estimating frequency domain representation of signals
CN111261276B (zh) * 2019-12-31 2023-09-05 郑州大学第一附属医院 基于双层傅里叶变换的远程心音智能诊断系统及诊断方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584781A (en) * 1968-07-01 1971-06-15 Bell Telephone Labor Inc Fft method and apparatus for real valued inputs
US3638004A (en) * 1968-10-28 1972-01-25 Time Data Corp Fourier transform computer
FR2147770B1 (da) * 1971-04-27 1974-06-21 Thomson Csf

Also Published As

Publication number Publication date
DK144629B (da) 1982-04-19
DK144629C (da) 1982-09-20
DE2608515A1 (de) 1976-09-16
JPS51112242A (en) 1976-10-04
DE2608515C2 (de) 1982-06-03
SE7602933L (sv) 1976-09-06
FR2303326A1 (fr) 1976-10-01
BE839153A (fr) 1976-09-03
GB1540883A (en) 1979-02-21
JPS5611181B2 (da) 1981-03-12
CA1057400A (en) 1979-06-26
FR2303326B1 (da) 1977-10-21
AU1160176A (en) 1977-09-08
NL7602083A (nl) 1976-09-07
CH627010A5 (da) 1981-12-15
AU500735B2 (en) 1979-05-31
US4051357A (en) 1977-09-27
SE406254B (sv) 1979-01-29

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Legal Events

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PBP Patent lapsed