CH250533A - Grain microphone. - Google Patents

Grain microphone.

Info

Publication number
CH250533A
CH250533A CH250533DA CH250533A CH 250533 A CH250533 A CH 250533A CH 250533D A CH250533D A CH 250533DA CH 250533 A CH250533 A CH 250533A
Authority
CH
Switzerland
Prior art keywords
microphone
grain
grain microphone
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Standard Telephon Und Radio
Original Assignee
Standard Telephon & Radio Ag
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 Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH250533A publication Critical patent/CH250533A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
CH250533D 1943-10-29 1945-03-17 Grain microphone. CH250533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL613552X 1943-10-29

Publications (1)

Publication Number Publication Date
CH250533A true CH250533A (en) 1947-08-31

Family

ID=19788177

Family Applications (1)

Application Number Title Priority Date Filing Date
CH250533D CH250533A (en) 1943-10-29 1945-03-17 Grain microphone.

Country Status (3)

Country Link
CH (1) CH250533A (en)
FR (1) FR907524A (en)
GB (1) GB613552A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976947C (en) * 1952-06-25 1964-09-17 Standard Elek K Lorenz Ag Resilient clamping of the membrane of a speech or ear capsule
DE1061825B (en) * 1954-02-26 1959-07-23 Hans Widmaier Coal semolina microphone capsule

Also Published As

Publication number Publication date
GB613552A (en) 1948-11-30
FR907524A (en) 1946-03-14

Similar Documents

Publication Publication Date Title
CH239583A (en) Jig.
CH256408A (en) Motocultor.
CH261402A (en) Stylograph.
CH247010A (en) Stylograph.
CH250533A (en) Grain microphone.
CH241312A (en) Telephone set.
CH238877A (en) Grain point.
CH261676A (en) Montre-réveil.
DK66117C (en) Microphone.
CH252308A (en) Scythe.
CH249350A (en) Culottes.
CH244138A (en) Torque amplifier.
DK71668C (en) Counter-coupled amplifier.
DK62411C (en) Barberomatomat.
DK67241C (en) Opmaskenaal.
ES8987Y (en) Cycle-float.
DK69478C (en) Kande.
ES9348Y (en) Bracelet-case.
DK68142C (en) Kande.
ES9241Y (en) Secafirmas.
DK63210C (en) Ajlespreder.
DK64521C (en) Gashane.
DK69956C (en) Shagpibe.
CH262470A (en) Plane.
CH259863A (en) Moving coil microphone.