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GB782998A - A device for the reproduction of sound - Google Patents

A device for the reproduction of sound

Info

Publication number
GB782998A
GB782998A GB976/55A GB97655A GB782998A GB 782998 A GB782998 A GB 782998A GB 976/55 A GB976/55 A GB 976/55A GB 97655 A GB97655 A GB 97655A GB 782998 A GB782998 A GB 782998A
Authority
GB
United Kingdom
Prior art keywords
acoustic
loud
mass
speaker
acoustic resistance
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
GB976/55A
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Publication of GB782998A publication Critical patent/GB782998A/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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • 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
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means 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)

Abstract

782,998. Loud-speakers. TESLA NARODNI PODNIK. Jan. 12, 1955 [J an. 20, 1954], No. 976/55. Class 13. [Also in Group XXXIX] The front of a loud-speaker is loaded by an acoustic resistance and an acoustic mass in parallel. The acoustic resistance 3 may consist of a layer of cloth which may be supported by wire or a perforated metal sheet. An opening 4 in the sheet 3 acts as acoustic mass. In Fig. 4 the acoustic mass is formed by an auxiliary diaphragm 41 close to the loud-speaker diaphragm, openings 3<SP>1</SP> covered with cloth forming the acoustic resistance.
GB976/55A 1954-01-20 1955-01-12 A device for the reproduction of sound Expired GB782998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS782998X 1954-01-20

Publications (1)

Publication Number Publication Date
GB782998A true GB782998A (en) 1957-09-18

Family

ID=5455501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB976/55A Expired GB782998A (en) 1954-01-20 1955-01-12 A device for the reproduction of sound

Country Status (1)

Country Link
GB (1) GB782998A (en)

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