BE829867A - COMPARAPHONES IMPROVEMENTS - Google Patents

COMPARAPHONES IMPROVEMENTS

Info

Publication number
BE829867A
BE829867A BE157033A BE157033A BE829867A BE 829867 A BE829867 A BE 829867A BE 157033 A BE157033 A BE 157033A BE 157033 A BE157033 A BE 157033A BE 829867 A BE829867 A BE 829867A
Authority
BE
Belgium
Prior art keywords
comparaphones
comparaphones improvements
Prior art date
Application number
BE157033A
Other languages
French (fr)
Inventor
J Pujolle
G Robine
P Bourcet
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 filed Critical
Publication of BE829867A publication Critical patent/BE829867A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/12—Amplitude; Power by electric means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Circuit For Audible Band Transducer (AREA)
BE157033A 1974-06-05 1975-06-04 COMPARAPHONES IMPROVEMENTS BE829867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7419390A FR2274032A1 (en) 1974-06-05 1974-06-05 COMPARAPHONES IMPROVEMENTS

Publications (1)

Publication Number Publication Date
BE829867A true BE829867A (en) 1975-10-01

Family

ID=9139645

Family Applications (1)

Application Number Title Priority Date Filing Date
BE157033A BE829867A (en) 1974-06-05 1975-06-04 COMPARAPHONES IMPROVEMENTS

Country Status (7)

Country Link
BE (1) BE829867A (en)
CH (1) CH592869A5 (en)
DE (1) DE2524467C3 (en)
ES (1) ES438272A1 (en)
FR (1) FR2274032A1 (en)
GB (1) GB1498220A (en)
IT (1) IT1038692B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418461A1 (en) * 1978-02-24 1979-09-21 Telediffusion Fse ACOUSTIC INSULATION MEASUREMENT
DE3334260A1 (en) * 1983-09-22 1985-04-11 Werner Dipl Ing Widmeier Sound level meter
GB2317698B (en) * 1983-10-10 1998-07-15 Secr Defence Acoustic sink for a sonar dome
DE19508663C2 (en) * 1995-03-14 2001-03-08 Deutsch Zentr Luft & Raumfahrt Pressure measuring device

Also Published As

Publication number Publication date
FR2274032B1 (en) 1976-10-15
FR2274032A1 (en) 1976-01-02
IT1038692B (en) 1979-11-30
ES438272A1 (en) 1977-01-16
DE2524467B2 (en) 1978-07-06
DE2524467C3 (en) 1979-03-15
GB1498220A (en) 1978-01-18
DE2524467A1 (en) 1975-12-18
CH592869A5 (en) 1977-11-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ETS PUBLIC TELEDIFFUSION DE FRANCE

Effective date: 19860630