FR772012A - Sound detector device, more particularly applicable to aerophones and underwater listening - Google Patents

Sound detector device, more particularly applicable to aerophones and underwater listening

Info

Publication number
FR772012A
FR772012A FR772012DA FR772012A FR 772012 A FR772012 A FR 772012A FR 772012D A FR772012D A FR 772012DA FR 772012 A FR772012 A FR 772012A
Authority
FR
France
Prior art keywords
aerophones
particularly applicable
detector device
sound detector
underwater listening
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Schauly Georges
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
Application granted granted Critical
Publication of FR772012A publication Critical patent/FR772012A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR772012D 1933-05-18 1933-05-18 Sound detector device, more particularly applicable to aerophones and underwater listening Expired FR772012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR772012T 1933-05-18

Publications (1)

Publication Number Publication Date
FR772012A true FR772012A (en) 1934-10-22

Family

ID=9192782

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772012D Expired FR772012A (en) 1933-05-18 1933-05-18 Sound detector device, more particularly applicable to aerophones and underwater listening

Country Status (1)

Country Link
FR (1) FR772012A (en)

Similar Documents

Publication Publication Date Title
FR798987A (en) Improvements to echo sounding methods and devices
FR45547E (en) Improvements in sound transmission, recording and reproduction devices
FR779360A (en) Improvements to insect capturing devices
FR803109A (en) Improvement in alternating current transmission methods and application device
FR772012A (en) Sound detector device, more particularly applicable to aerophones and underwater listening
FR816776A (en) Improvements in processes and cameras
FR849003A (en) Improvements in electro-acoustic devices for the deaf
FR43928E (en) Loudspeaker enhancements
FR774296A (en) Key enhancements
FR810375A (en) Improvements to television and similar apparatus
FR716724A (en) Sound receiving device, particularly applicable to sound and speaking cinematography
FR761732A (en) Improvements to television and similar apparatus
FR840047A (en) Refinements to submarine acoustics transmitters and receivers
FR798575A (en) Improvements to or related to telegraph systems and apparatus
FR765856A (en) Improvements in microphones and receivers
FR768557A (en) Improvements to photographic magnifiers
FR802404A (en) Acoustic device applicable to t receivers. s. f. or amplifiers
FR777057A (en) Echo sounding device enhancements
DK54813C (en) Tape Tightening and Tape Assembly Apparatus.
FR765294A (en) Improvements to so-called <<arrache-poulie>>, <<arrache-moyeu>>, <<arrache-roulement>> devices and similar devices
FR758566A (en) Evacuation device
FR801053A (en) Improvements in cameras, and the like
FR769327A (en) Improvements to television and similar apparatus
FR823729A (en) Improvements in telephone transmission methods
FR771554A (en) Improvements to belt buckles and the like