FR987776A - Method for the detection of sound waves - Google Patents

Method for the detection of sound waves

Info

Publication number
FR987776A
FR987776A FR987776DA FR987776A FR 987776 A FR987776 A FR 987776A FR 987776D A FR987776D A FR 987776DA FR 987776 A FR987776 A FR 987776A
Authority
FR
France
Prior art keywords
detection
sound waves
waves
sound
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
Fro Trommsdorff
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 FR987776A publication Critical patent/FR987776A/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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR987776D 1949-06-03 1949-06-03 Method for the detection of sound waves Expired FR987776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR987776T 1949-06-03

Publications (1)

Publication Number Publication Date
FR987776A true FR987776A (en) 1951-08-20

Family

ID=9539118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR987776D Expired FR987776A (en) 1949-06-03 1949-06-03 Method for the detection of sound waves

Country Status (1)

Country Link
FR (1) FR987776A (en)

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