CH480769A - Acoustic device for low frequency sound reproduction - Google Patents

Acoustic device for low frequency sound reproduction

Info

Publication number
CH480769A
CH480769A CH684968A CH684968A CH480769A CH 480769 A CH480769 A CH 480769A CH 684968 A CH684968 A CH 684968A CH 684968 A CH684968 A CH 684968A CH 480769 A CH480769 A CH 480769A
Authority
CH
Switzerland
Prior art keywords
low frequency
sound reproduction
acoustic device
frequency sound
acoustic
Prior art date
Application number
CH684968A
Other languages
German (de)
Inventor
Anders Amneus Kristers Lars
Original Assignee
Anders Amneus Kristers Lars
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 Anders Amneus Kristers Lars filed Critical Anders Amneus Kristers Lars
Publication of CH480769A publication Critical patent/CH480769A/en

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
    • H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
CH684968A 1968-05-04 1968-05-08 Acoustic device for low frequency sound reproduction CH480769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681762237 DE1762237C3 (en) 1968-05-04 1968-05-04 Public address system, in particular for low-frequency sound reproduction

Publications (1)

Publication Number Publication Date
CH480769A true CH480769A (en) 1969-10-31

Family

ID=5696936

Family Applications (1)

Application Number Title Priority Date Filing Date
CH684968A CH480769A (en) 1968-05-04 1968-05-08 Acoustic device for low frequency sound reproduction

Country Status (3)

Country Link
CH (1) CH480769A (en)
DE (1) DE1762237C3 (en)
FR (1) FR1572648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142604A (en) * 1976-09-15 1979-03-06 Smith Todd G Speaker structure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162049A1 (en) * 1983-01-28 1985-11-27 Krister Amnéus An arrangement in acoustic systems
DE3920041C1 (en) * 1989-06-20 1990-12-06 Amneus Engineering, Vaellingby, Se
DE3920060A1 (en) * 1989-06-20 1991-01-03 Mb Electronic Gmbh Loudspeaker housing with acoustically damped resonator opening

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885024A (en) * 1959-05-05 Loudspeaker cabinets
US2065751A (en) * 1935-12-31 1936-12-29 Rca Corp Acoustic resistance device
GB496619A (en) * 1937-01-23 1938-12-02 Philips Nv Improvements in loudspeakers
DE1074651B (en) * 1956-03-08 1960-02-04 Deutsche Post Betnebslaboratorium fur Rundfunk und Fernsehen Ber Im Adlershof Arrangement to achieve the expansion of the frequency range in the direction of the lower Frc frequencies in acoustic radiators
DE1275136B (en) * 1965-03-05 1968-08-14 Akg Akustische Kino Geraete Electrodynamic directional microphone with phase-rotating acoustic delay element of the LR type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142604A (en) * 1976-09-15 1979-03-06 Smith Todd G Speaker structure

Also Published As

Publication number Publication date
FR1572648A (en) 1969-06-27
DE1762237B2 (en) 1980-01-03
DE1762237C3 (en) 1983-12-08
DE1762237A1 (en) 1970-04-23

Similar Documents

Publication Publication Date Title
IT987490B (en) HEADSET DEVICE FOR LISTENING
FR1497849A (en) Loud speaker
CH490766A (en) Audio frequency amplifier
FR1401643A (en) Loud speaker
CH446442A (en) Sound recording device
BE756400A (en) ACOUSTIC SPEAKER
OA03688A (en) Acoustic transducer.
CH480769A (en) Acoustic device for low frequency sound reproduction
AT259044B (en) Electrodynamic sound transducer
BE772944A (en) ACOUSTIC ATTENUATOR
CH461124A (en) Microphone for voice recorder
AR198011A1 (en) AUDIO FREQUENCY AMPLIFIER
IT958032B (en) SPEAKER DEVICE FOR SOUND AMPLIFICATION
CH428525A (en) Sound reproduction device
FR1461089A (en) Loud speaker
AT288164B (en) Sound pick-up device for film recorders or reproducers
BE756414A (en) PERFECTED ACOUSTIC CIRCUIT FOR ELECTRO-ACOUSTIC TRANSDUCERS
FR1428916A (en) Electroacoustic transducer
AT289915B (en) Attenuator for condenser microphones
IT941415B (en) ACOUSTIC ATTENUATOR
CH528129A (en) Loudspeakers for sound reproduction devices
FR1492550A (en) Acoustic transducer
SE393415B (en) SOUND Muffler PALKRAN
FR91732E (en) Improvements to electrodynamic acoustic transducers
FR1453850A (en) Improvements to electrodynamic acoustic transducers

Legal Events

Date Code Title Description
PL Patent ceased