FR2382701A1 - Analyseurs de frequence comprenant des sections de filtrage numerique passe-bande et passe-bas fonctionnant en temps partage - Google Patents

Analyseurs de frequence comprenant des sections de filtrage numerique passe-bande et passe-bas fonctionnant en temps partage

Info

Publication number
FR2382701A1
FR2382701A1 FR7806240A FR7806240A FR2382701A1 FR 2382701 A1 FR2382701 A1 FR 2382701A1 FR 7806240 A FR7806240 A FR 7806240A FR 7806240 A FR7806240 A FR 7806240A FR 2382701 A1 FR2382701 A1 FR 2382701A1
Authority
FR
France
Prior art keywords
pass
low
pass filter
band
sharing
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
Application number
FR7806240A
Other languages
English (en)
Other versions
FR2382701B1 (fr
Inventor
Hiroaki Sakoe
Seibi Chiba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of FR2382701A1 publication Critical patent/FR2382701A1/fr
Application granted granted Critical
Publication of FR2382701B1 publication Critical patent/FR2382701B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

La présente invention concerne des analyseurs de fréquences comprenant des sections de filtrage numérique passe-bande et passe-bas fonctionnant en temps partagé. Un nombre présélectionné d'échantillons numériques échantillonnés selon une période d'échantillonnage donnée est mémorisé dans une mémoire tampon 12 pour être lu à chaque période d'échantillonnage. Une mémoire de paramètres passe-bande 13 mémorise sur les canaux respectifs les réponses impulsionnelles de filtre passe-bande en nombre égal au nombre présélectionné. Un calculateur de filtre passe-bande 14 calcule la convolution de chaque échantillon numérique lu et des valeurs présélectionnées dans chaque réponse. La section de filtre passe-bas 2 produit des résultats d'analyse fréquentielle pour les canaux respectifs au cours de chaque période de trame d'analyse égale à un premier nombre présélectionné de périodes d'échantillonnage. Cette section de filtre passe-bas comprend un multiplicateur 16, une mémoire de paramètres passe-bas 17, un additionneur 18 et une mémoire à registres accumulateurs 19. L'ensemble est commandé par un circuit de commande 10. Application aux décodeurs de paroles.
FR7806240A 1977-03-04 1978-03-03 Analyseurs de frequence comprenant des sections de filtrage numerique passe-bande et passe-bas fonctionnant en temps partage Granted FR2382701A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52023610A JPS6016582B2 (ja) 1977-03-04 1977-03-04 デイジタル周波数分析装置

Publications (2)

Publication Number Publication Date
FR2382701A1 true FR2382701A1 (fr) 1978-09-29
FR2382701B1 FR2382701B1 (fr) 1981-12-31

Family

ID=12115373

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806240A Granted FR2382701A1 (fr) 1977-03-04 1978-03-03 Analyseurs de frequence comprenant des sections de filtrage numerique passe-bande et passe-bas fonctionnant en temps partage

Country Status (5)

Country Link
US (1) US4157457A (fr)
JP (1) JPS6016582B2 (fr)
DE (1) DE2809316A1 (fr)
FR (1) FR2382701A1 (fr)
NL (1) NL181058C (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54139417A (en) * 1978-04-21 1979-10-29 Nippon Telegr & Teleph Corp <Ntt> Interpolation receiving devices at voice short break time
FR2424669A1 (fr) * 1978-04-27 1979-11-23 Materiel Telephonique Dispositifs analyseurs numeriques de spectres
AU529532B2 (en) * 1978-09-18 1983-06-09 Commonwealth Scientific And Industrial Research Organisation Frequency response analyser
DE2854315C2 (de) * 1978-12-15 1987-01-02 German Ing.(Grad.) 8060 Dachau Grimm Einrichtung zum Bestimmen von die Netzfrequenz beeinflussenden Störungen in elektrischen Energieversorgungsnetzen und Verwendung einer derartigen Einrichtung in einer adaptiven Frequenzregeleinrichtung für elektrische Energieversorgungsnetze
JPS584307B2 (ja) * 1979-10-23 1983-01-25 富士通株式会社 スペクトル分析器
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver
GB2075299B (en) * 1980-04-22 1983-10-19 Casio Computer Co Ltd Digital filter device
FR2509500A1 (fr) * 1981-07-10 1983-01-14 Efcis Analyseur spectral a filtres communs a deux voies, notamment pour la reconnaissance vocale
US4590583A (en) * 1982-07-16 1986-05-20 At&T Bell Laboratories Coin telephone measurement circuitry
US4538236A (en) * 1982-09-24 1985-08-27 Rca Corporation Adaptive digital signal coring circuit
JPS603700A (ja) * 1983-06-22 1985-01-10 日本電気株式会社 音声検出方式
US4703433A (en) * 1984-01-09 1987-10-27 Hewlett-Packard Company Vector network analyzer with integral processor
US4649505A (en) * 1984-07-02 1987-03-10 General Electric Company Two-input crosstalk-resistant adaptive noise canceller
US4908785A (en) * 1985-08-16 1990-03-13 The Boeing Company Data compression method for telemetry of vibration data
US4779217A (en) * 1985-12-27 1988-10-18 Kyocera Corporation Octave multiple filter
JPH0681009B2 (ja) * 1986-01-20 1994-10-12 三菱電機株式会社 デジタルフイルタ装置
US5576978A (en) * 1994-05-18 1996-11-19 Advantest Corporation High resolution frequency analyzer and vector spectrum analyzer
US6507804B1 (en) 1997-10-14 2003-01-14 Bently Nevada Corporation Apparatus and method for compressing measurement data corelative to machine status
US6026348A (en) * 1997-10-14 2000-02-15 Bently Nevada Corporation Apparatus and method for compressing measurement data correlative to machine status
JP3584027B2 (ja) * 2002-03-12 2004-11-04 沖電気工業株式会社 デジタルフィルタ
US8297123B2 (en) * 2009-07-30 2012-10-30 General Electric Company Detection of anomalous movement in a reciprocating device
US9385724B1 (en) * 2013-10-03 2016-07-05 Altera Corporation Methods for operating configurable storage and processing blocks at double and single data rates

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708746A (en) * 1971-11-08 1973-01-02 Univ Iowa State Res Found Inc System for spectrum analysis including digital filter with variable sampling rate

Also Published As

Publication number Publication date
NL181058C (nl) 1987-06-01
NL7802412A (nl) 1978-09-06
FR2382701B1 (fr) 1981-12-31
US4157457A (en) 1979-06-05
NL181058B (nl) 1987-01-02
JPS53108481A (en) 1978-09-21
JPS6016582B2 (ja) 1985-04-26
DE2809316A1 (de) 1978-09-07

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