GB248060A - Improvements in or relating to loud speaking telephonic receivers - Google Patents

Improvements in or relating to loud speaking telephonic receivers

Info

Publication number
GB248060A
GB248060A GB2824324A GB2824324A GB248060A GB 248060 A GB248060 A GB 248060A GB 2824324 A GB2824324 A GB 2824324A GB 2824324 A GB2824324 A GB 2824324A GB 248060 A GB248060 A GB 248060A
Authority
GB
United Kingdom
Prior art keywords
amplifier
sound
relating
conduit
loud
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
GB2824324A
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
Priority to FR605534D priority Critical patent/FR605534A/fr
Application filed by Individual filed Critical Individual
Priority to GB2824324A priority patent/GB248060A/en
Publication of GB248060A publication Critical patent/GB248060A/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)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
GB2824324A 1924-11-25 1924-11-25 Improvements in or relating to loud speaking telephonic receivers Expired GB248060A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR605534D FR605534A (enrdf_load_stackoverflow) 1924-11-25
GB2824324A GB248060A (en) 1924-11-25 1924-11-25 Improvements in or relating to loud speaking telephonic receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2824324A GB248060A (en) 1924-11-25 1924-11-25 Improvements in or relating to loud speaking telephonic receivers

Publications (1)

Publication Number Publication Date
GB248060A true GB248060A (en) 1926-02-25

Family

ID=10272597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2824324A Expired GB248060A (en) 1924-11-25 1924-11-25 Improvements in or relating to loud speaking telephonic receivers

Country Status (2)

Country Link
FR (1) FR605534A (enrdf_load_stackoverflow)
GB (1) GB248060A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188811A (en) * 1986-04-01 1987-10-07 Canon Kk Sound output system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971730C (de) * 1952-04-27 1959-03-19 Philips Patentverwaltung Lautsprecher mit Kugelcharakteristik
DE4100708C2 (de) * 1991-01-11 1996-02-08 Robert Schwanitz Kugelförmiges Lautsprechergehäuse mit Horntrichter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188811A (en) * 1986-04-01 1987-10-07 Canon Kk Sound output system
GB2188811B (en) * 1986-04-01 1990-12-12 Canon Kk Sound output system

Also Published As

Publication number Publication date
FR605534A (enrdf_load_stackoverflow) 1926-05-28

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