GB191504912A - Transmission of Sound Waves. - Google Patents

Transmission of Sound Waves.

Info

Publication number
GB191504912A
GB191504912A GB191504912DA GB191504912A GB 191504912 A GB191504912 A GB 191504912A GB 191504912D A GB191504912D A GB 191504912DA GB 191504912 A GB191504912 A GB 191504912A
Authority
GB
United Kingdom
Prior art keywords
transmission
sound waves
waves
frequency
audible
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
Inventor
Eric Magnus Campbel Tigerstedt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191504912A publication Critical patent/GB191504912A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

4912. Tigerstedt, E. M. C. March 30, 1914, [Convention date]. Audible signals.-Sounds are transmitted by impressing them as amplitude-variations on a stream of air waves of super-audible frequency. The waves from a high-frequency siren b, for instance, may be modified by a diaphragm c operated by a magnet d or mouthpiece d'.
GB191504912D 1914-03-30 1915-03-30 Transmission of Sound Waves. Expired GB191504912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191504912X 1914-03-30

Publications (1)

Publication Number Publication Date
GB191504912A true GB191504912A (en) 1915-07-29

Family

ID=32668465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191504912D Expired GB191504912A (en) 1914-03-30 1915-03-30 Transmission of Sound Waves.

Country Status (2)

Country Link
DE (1) DE309534C (en)
GB (1) GB191504912A (en)

Also Published As

Publication number Publication date
DE309534C (en)

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