FR619701A - Improvements to speakers, gramophones and other devices to record or reproduce sounds - Google Patents

Improvements to speakers, gramophones and other devices to record or reproduce sounds

Info

Publication number
FR619701A
FR619701A FR619701DA FR619701A FR 619701 A FR619701 A FR 619701A FR 619701D A FR619701D A FR 619701DA FR 619701 A FR619701 A FR 619701A
Authority
FR
France
Prior art keywords
gramophones
speakers
record
devices
reproduce sounds
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)
Inventor
Mahe De Chenal De La B Charles
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 filed Critical
Application granted granted Critical
Publication of FR619701A publication Critical patent/FR619701A/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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Toys (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR619701D 1925-07-29 1926-07-27 Improvements to speakers, gramophones and other devices to record or reproduce sounds Expired FR619701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19231/25A GB256395A (en) 1925-07-29 1925-07-29 Improvements in, or relating to, loud-speakers, gramophones, and other sound-recording or reproducing apparatus

Publications (1)

Publication Number Publication Date
FR619701A true FR619701A (en) 1927-04-07

Family

ID=10125891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR619701D Expired FR619701A (en) 1925-07-29 1926-07-27 Improvements to speakers, gramophones and other devices to record or reproduce sounds

Country Status (3)

Country Link
US (1) US1689997A (en)
FR (1) FR619701A (en)
GB (1) GB256395A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL109829C (en) * 1956-07-24

Also Published As

Publication number Publication date
US1689997A (en) 1928-10-30
GB256395A (en) 1926-08-12

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