GB257639A - Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus - Google Patents

Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus

Info

Publication number
GB257639A
GB257639A GB8628/25A GB862825A GB257639A GB 257639 A GB257639 A GB 257639A GB 8628/25 A GB8628/25 A GB 8628/25A GB 862825 A GB862825 A GB 862825A GB 257639 A GB257639 A GB 257639A
Authority
GB
United Kingdom
Prior art keywords
relating
reproducing apparatus
loud
sound producing
loud speaking
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
GB8628/25A
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.)
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
Priority to DE1926G0066852 priority Critical patent/DE522363C/de
Publication of GB257639A publication Critical patent/GB257639A/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)
GB8628/25A 1925-03-31 1925-03-31 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus Expired GB257639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1926G0066852 DE522363C (de) 1925-03-31 1926-03-27 Vorrichtung zur akustischen Verstaerkung in Verbindung mit Lautsprechern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4945/26A GB274532A (en) 1926-02-20 1926-02-20 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus

Publications (1)

Publication Number Publication Date
GB257639A true GB257639A (en) 1926-08-31

Family

ID=9786809

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8628/25A Expired GB257639A (en) 1925-03-31 1925-03-31 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus
GB4945/26A Expired GB274532A (en) 1925-03-31 1926-02-20 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4945/26A Expired GB274532A (en) 1925-03-31 1926-02-20 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus

Country Status (4)

Country Link
US (1) US1678214A (de)
BE (2) BE338918A (de)
FR (2) FR613219A (de)
GB (2) GB257639A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816619A (en) * 1951-12-04 1957-12-17 John E Karlson Acoustic transducers

Also Published As

Publication number Publication date
BE333006A (de)
GB274532A (en) 1927-07-20
FR613219A (fr) 1926-11-12
BE338918A (de)
US1678214A (en) 1928-07-24
FR626769A (fr) 1927-09-19

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