FR791720A - Improvements relating to loudspeakers and similar instruments - Google Patents

Improvements relating to loudspeakers and similar instruments

Info

Publication number
FR791720A
FR791720A FR791720DA FR791720A FR 791720 A FR791720 A FR 791720A FR 791720D A FR791720D A FR 791720DA FR 791720 A FR791720 A FR 791720A
Authority
FR
France
Prior art keywords
loudspeakers
improvements relating
similar instruments
instruments
similar
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
Other languages
French (fr)
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.)
GLEN S PATENTS AND HOLDINGS LT
Original Assignee
GLEN S PATENTS AND HOLDINGS LT
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 GLEN S PATENTS AND HOLDINGS LT filed Critical GLEN S PATENTS AND HOLDINGS LT
Application granted granted Critical
Publication of FR791720A publication Critical patent/FR791720A/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
    • 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
FR791720D 1934-07-04 1935-06-25 Improvements relating to loudspeakers and similar instruments Expired FR791720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19709/34A GB440726A (en) 1934-07-04 1934-07-04 Improvements in or relating to loudspeakers and the like

Publications (1)

Publication Number Publication Date
FR791720A true FR791720A (en) 1935-12-16

Family

ID=10133889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR791720D Expired FR791720A (en) 1934-07-04 1935-06-25 Improvements relating to loudspeakers and similar instruments

Country Status (3)

Country Link
US (1) US2049767A (en)
FR (1) FR791720A (en)
GB (1) GB440726A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146848A (en) * 1958-08-25 1964-09-01 John O Fundingsland Hi-fidelity speaker

Also Published As

Publication number Publication date
GB440726A (en) 1936-01-06
US2049767A (en) 1936-08-04

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