CH201674A - Acoustic device. - Google Patents

Acoustic device.

Info

Publication number
CH201674A
CH201674A CH201674DA CH201674A CH 201674 A CH201674 A CH 201674A CH 201674D A CH201674D A CH 201674DA CH 201674 A CH201674 A CH 201674A
Authority
CH
Switzerland
Prior art keywords
acoustic device
acoustic
Prior art date
Application number
Other languages
French (fr)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH201674A publication Critical patent/CH201674A/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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • 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 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
CH201674D 1936-09-09 1937-06-08 Acoustic device. CH201674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99910A US2131593A (en) 1936-09-09 1936-09-09 Acoustic device

Publications (1)

Publication Number Publication Date
CH201674A true CH201674A (en) 1938-12-15

Family

ID=22277206

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201674D CH201674A (en) 1936-09-09 1937-06-08 Acoustic device.

Country Status (5)

Country Link
US (1) US2131593A (en)
CH (1) CH201674A (en)
FR (1) FR822144A (en)
GB (1) GB473878A (en)
NL (1) NL47966C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB656723A (en) * 1948-01-10 1951-08-29 Edward Shipton Improvements in or relating to telephone instruments
US4529059A (en) * 1982-12-27 1985-07-16 Federal Signal Corporation Vibrating diaphragm type audible device with acoustically improved grille and method
US7697698B2 (en) * 2003-08-22 2010-04-13 William Sumner Brown Sound-based vehicle safety system
USD760203S1 (en) * 2015-01-05 2016-06-28 Gibson Brands, Inc. Microphone
USD760704S1 (en) * 2015-01-05 2016-07-05 Gibson Brands, Inc. Microphone
USD760204S1 (en) * 2015-01-05 2016-06-28 Gibson Brands, Inc. Microphone
USD808937S1 (en) * 2016-12-30 2018-01-30 Liangyi Zheng Microphone
USD840476S1 (en) * 2017-07-10 2019-02-12 MerchSource, LLC Kid's microphone
JP1666937S (en) * 2019-09-05 2020-08-31
USD899407S1 (en) * 2020-03-21 2020-10-20 Shenzhen Xunweijia Technology Development Co., Ltd. Microphone
USD918876S1 (en) * 2020-05-19 2021-05-11 Shenzhen Xunweijia Technology Development Co., Shenzhen Microphone

Also Published As

Publication number Publication date
FR822144A (en) 1937-12-21
NL47966C (en)
US2131593A (en) 1938-09-27
GB473878A (en) 1937-10-21

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