GB134365A - Improvements in or relating to Electrical Sound Detecting Devices. - Google Patents

Improvements in or relating to Electrical Sound Detecting Devices.

Info

Publication number
GB134365A
GB134365A GB1872218A GB1872218A GB134365A GB 134365 A GB134365 A GB 134365A GB 1872218 A GB1872218 A GB 1872218A GB 1872218 A GB1872218 A GB 1872218A GB 134365 A GB134365 A GB 134365A
Authority
GB
United Kingdom
Prior art keywords
relating
detecting devices
sound detecting
electrical sound
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
GB1872218A
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.)
JOSEPH BEIGHTON REDFERN
Automatic Telephone Manufacturing Co Ltd
Original Assignee
JOSEPH BEIGHTON REDFERN
Automatic Telephone Manufacturing 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 JOSEPH BEIGHTON REDFERN, Automatic Telephone Manufacturing Co Ltd filed Critical JOSEPH BEIGHTON REDFERN
Priority to GB1872218A priority Critical patent/GB134365A/en
Publication of GB134365A publication Critical patent/GB134365A/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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

134,365. Automatic Telephone Manufacturing Co., and Redfern, J. B. Nov. 15, 1918. Locating sounds.-In a sound-locating device which depends on phase-adjustment and comprises two telephonic circuits, a preferably adjustable resistance such as R is employed to reduce the sensibility of the hydrophones or like receivers R<1>, R<2>. Interference from local sounds is thus diminished. The Provisional Specification states that the quality of the sound is better reproduced, so that long-range metal diaphragms can be employed.
GB1872218A 1918-11-15 1918-11-15 Improvements in or relating to Electrical Sound Detecting Devices. Expired GB134365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1872218A GB134365A (en) 1918-11-15 1918-11-15 Improvements in or relating to Electrical Sound Detecting Devices.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1872218A GB134365A (en) 1918-11-15 1918-11-15 Improvements in or relating to Electrical Sound Detecting Devices.

Publications (1)

Publication Number Publication Date
GB134365A true GB134365A (en) 1919-11-06

Family

ID=32409072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1872218A Expired GB134365A (en) 1918-11-15 1918-11-15 Improvements in or relating to Electrical Sound Detecting Devices.

Country Status (1)

Country Link
GB (1) GB134365A (en)

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