GB709355A - Improvements in or relating to acoustic transformation systems - Google Patents

Improvements in or relating to acoustic transformation systems

Info

Publication number
GB709355A
GB709355A GB20459/52A GB2045952A GB709355A GB 709355 A GB709355 A GB 709355A GB 20459/52 A GB20459/52 A GB 20459/52A GB 2045952 A GB2045952 A GB 2045952A GB 709355 A GB709355 A GB 709355A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
tube
shaped
cylinder
acoustic
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
GB20459/52A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB709355A publication Critical patent/GB709355A/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
GB20459/52A 1951-08-17 1952-08-14 Improvements in or relating to acoustic transformation systems Expired GB709355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL304777X 1951-08-17

Publications (1)

Publication Number Publication Date
GB709355A true GB709355A (en) 1954-05-19

Family

ID=19783449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20459/52A Expired GB709355A (en) 1951-08-17 1952-08-14 Improvements in or relating to acoustic transformation systems

Country Status (5)

Country Link
BE (1) BE513534A (de)
CH (1) CH304777A (de)
DE (1) DE926498C (de)
FR (1) FR1061480A (de)
GB (1) GB709355A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2129163A1 (de) * 2007-02-28 2009-12-02 Temco Japan Co., Ltd. Mikrofon mit schwingungsgeber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2129163A1 (de) * 2007-02-28 2009-12-02 Temco Japan Co., Ltd. Mikrofon mit schwingungsgeber
CN101622883A (zh) * 2007-02-28 2010-01-06 株式会社坦姆科日本 拾振器式话筒
EP2129163A4 (de) * 2007-02-28 2011-01-26 Temco Japan Mikrofon mit schwingungsgeber

Also Published As

Publication number Publication date
CH304777A (de) 1955-01-31
FR1061480A (fr) 1954-04-13
BE513534A (de)
DE926498C (de) 1955-04-18

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