GB360510A - - Google Patents

Info

Publication number
GB360510A
GB360510A GB24391/30A GB2439130A GB360510A GB 360510 A GB360510 A GB 360510A GB 24391/30 A GB24391/30 A GB 24391/30A GB 2439130 A GB2439130 A GB 2439130A GB 360510 A GB360510 A GB 360510A
Authority
GB
United Kingdom
Prior art keywords
sound
apertures
sound guide
loud
horn
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
GB24391/30A
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.)
Siemens and Halske AG
Original Assignee
Siemens and Halske AG
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 Siemens and Halske AG filed Critical Siemens and Halske AG
Publication of GB360510A publication Critical patent/GB360510A/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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

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)
  • Road Signs Or Road Markings (AREA)
  • Burglar Alarm Systems (AREA)
GB24391/30A 1930-05-24 1930-08-14 Expired GB360510A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE581341T 1930-05-24

Publications (1)

Publication Number Publication Date
GB360510A true GB360510A (enrdf_load_stackoverflow) 1931-11-12

Family

ID=31895413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24391/30A Expired GB360510A (enrdf_load_stackoverflow) 1930-05-24 1930-08-14

Country Status (4)

Country Link
AT (1) AT126062B (enrdf_load_stackoverflow)
DE (1) DE581341C (enrdf_load_stackoverflow)
FR (1) FR700370A (enrdf_load_stackoverflow)
GB (1) GB360510A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069686B (enrdf_load_stackoverflow) * 1959-11-26

Also Published As

Publication number Publication date
FR700370A (fr) 1931-02-27
AT126062B (de) 1931-12-28
DE581341C (de) 1933-07-29

Similar Documents

Publication Publication Date Title
GB656732A (en) Improvements in or relating to loud speakers
US2177769A (en) Loud-speaking intercommunicating system
GB765183A (en) Improvements in or relating to loudspeakers
GB961369A (en) Improvements in electro-acoustic transducer which is incorporated in a capsule and comprises a transistor amplifier particularly for telephone handsets
US1747778A (en) Head telephone
GB360510A (enrdf_load_stackoverflow)
US2301459A (en) Electric megaphone
US1985881A (en) Sound apparatus
US2161995A (en) Speaker and listening device
GB695912A (en) Improvements in or relating to public address and like sound disseminating systems
GB978781A (en) Improvements in or relating to sound reproducing apparatus
GB790998A (en) A device for the reproduction of sound
GB281634A (en) Improvements in or connected with sound reproducers
GB402600A (en) Improvements in or relating to loudspeakers
US1700441A (en) Acoustic device
GB641668A (en) Sound reproduction devices
GB829214A (en) Improvements in loud speaker systems
Emling General aspects of hands-free telephony
DE552383C (de) Tonwiedergabevorrichtung, Plattensprechmaschine o. dgl.
GB309152A (en) Improvements in intercommunication telephone apparatus
GB352464A (en) Improvements in or relating to microphones and apparatus for use thereof
GB387127A (en) Improvements in loud-speakers
GB485558A (en) Improvements in or relating to the recording or transmission of sound by electrical means
GB661887A (en) Improvements in or relating to mounting for loudspeakers
GB611179A (en) Improvements in and relating to acoustic instruments, such as loud speakers and directional microphones