FR613217A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR613217A
FR613217A FR613217DA FR613217A FR 613217 A FR613217 A FR 613217A FR 613217D A FR613217D A FR 613217DA FR 613217 A FR613217 A FR 613217A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
Patrick Shaughnessy O'donnell
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 FR613217A publication Critical patent/FR613217A/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
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR613217D 1925-05-11 1926-03-22 Improvements to sound reproduction systems Expired FR613217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1722007X 1925-05-11

Publications (1)

Publication Number Publication Date
FR613217A true FR613217A (en) 1926-11-12

Family

ID=10889181

Family Applications (3)

Application Number Title Priority Date Filing Date
FR613216D Expired FR613216A (en) 1925-05-11 1926-03-15 Improvements in sound amplifying devices for sound reproducing and recording instruments
FR613217D Expired FR613217A (en) 1925-05-11 1926-03-22 Improvements to sound reproduction systems
FR613218D Expired FR613218A (en) 1925-05-11 1926-03-22 Improvements to sound reproduction systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR613216D Expired FR613216A (en) 1925-05-11 1926-03-15 Improvements in sound amplifying devices for sound reproducing and recording instruments

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR613218D Expired FR613218A (en) 1925-05-11 1926-03-22 Improvements to sound reproduction systems

Country Status (5)

Country Link
US (3) US1722008A (en)
BE (3) BE335673A (en)
DE (2) DE463897C (en)
FR (3) FR613216A (en)
GB (3) GB256677A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943412C (en) * 1951-06-13 1956-05-17 Elbau Elektrotechnik Aappbau Protective body for sound emitters
DE949406C (en) * 1953-06-07 1956-09-20 Wilhelm Silberkuhl Dipl Ing Sound cabinet with several loudspeakers that stimulate resonators
US3015366A (en) * 1956-12-14 1962-01-02 George M Bishop Speaker system

Also Published As

Publication number Publication date
US1722007A (en) 1929-07-23
GB256677A (en) 1926-08-11
FR613218A (en) 1926-11-12
DE463897C (en) 1928-08-06
GB261154A (en) 1926-11-18
US1722008A (en) 1929-07-23
BE335672A (en)
US1730286A (en) 1929-10-01
BE335673A (en)
DE463898C (en) 1928-08-06
FR613216A (en) 1926-11-12
BE335674A (en)
GB259103A (en) 1926-10-07

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