GB304313A - Improvements relating to the amplification and diffusion of sounds - Google Patents

Improvements relating to the amplification and diffusion of sounds

Info

Publication number
GB304313A
GB304313A GB38564/28A GB3856428A GB304313A GB 304313 A GB304313 A GB 304313A GB 38564/28 A GB38564/28 A GB 38564/28A GB 3856428 A GB3856428 A GB 3856428A GB 304313 A GB304313 A GB 304313A
Authority
GB
United Kingdom
Prior art keywords
horn
ceiling
room
cornice
floor
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
GB38564/28A
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.)
ARMAND FERNAND EPHRAIEM
Original Assignee
ARMAND FERNAND EPHRAIEM
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 ARMAND FERNAND EPHRAIEM filed Critical ARMAND FERNAND EPHRAIEM
Publication of GB304313A publication Critical patent/GB304313A/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)
  • Details Of Audible-Bandwidth Transducers (AREA)
GB38564/28A 1928-01-20 1928-12-31 Improvements relating to the amplification and diffusion of sounds Expired GB304313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR304313X 1928-01-20

Publications (1)

Publication Number Publication Date
GB304313A true GB304313A (en) 1930-06-30

Family

ID=8888782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38564/28A Expired GB304313A (en) 1928-01-20 1928-12-31 Improvements relating to the amplification and diffusion of sounds

Country Status (3)

Country Link
US (1) US1962300A (enrdf_load_html_response)
BE (1) BE357449A (enrdf_load_html_response)
GB (1) GB304313A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239570A (en) * 1989-12-20 1991-07-03 * Wild Michael Bath tub radio

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878887A (en) * 1955-11-29 1959-03-24 Wisconsin Alumni Res Found Acoustical device
NL1019961C2 (nl) * 2002-02-14 2003-08-15 Duran Audio B V Akoestische weergever.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239570A (en) * 1989-12-20 1991-07-03 * Wild Michael Bath tub radio

Also Published As

Publication number Publication date
US1962300A (en) 1934-06-12
BE357449A (enrdf_load_html_response)

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