CH375541A - Device for recording or reproducing acoustic oscillations with a variable acoustic impedance - Google Patents

Device for recording or reproducing acoustic oscillations with a variable acoustic impedance

Info

Publication number
CH375541A
CH375541A CH8187759A CH8187759A CH375541A CH 375541 A CH375541 A CH 375541A CH 8187759 A CH8187759 A CH 8187759A CH 8187759 A CH8187759 A CH 8187759A CH 375541 A CH375541 A CH 375541A
Authority
CH
Switzerland
Prior art keywords
recording
acoustic
reproducing
variable
oscillations
Prior art date
Application number
CH8187759A
Other languages
German (de)
Inventor
Schenkel Gerrit
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH375541A publication Critical patent/CH375541A/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 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Springs (AREA)
  • Telephone Set Structure (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
CH8187759A 1958-12-19 1959-12-16 Device for recording or reproducing acoustic oscillations with a variable acoustic impedance CH375541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL234436 1958-12-19

Publications (1)

Publication Number Publication Date
CH375541A true CH375541A (en) 1964-02-29

Family

ID=19751489

Family Applications (1)

Application Number Title Priority Date Filing Date
CH8187759A CH375541A (en) 1958-12-19 1959-12-16 Device for recording or reproducing acoustic oscillations with a variable acoustic impedance

Country Status (6)

Country Link
CH (1) CH375541A (en)
DE (1) DE1115302B (en)
ES (1) ES254241A1 (en)
FR (1) FR1242763A (en)
GB (1) GB934632A (en)
NL (2) NL108508C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187635A (en) * 1978-04-03 1980-02-12 Deissler Robert J Method and apparatus for sound production

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263408A (en) * 1936-04-11 1941-11-18 Lakhovsky George Means for improving the sound emitted by microphones, loudspeakers, and the like
DE1073546B (en) * 1955-05-26 1960-01-21 Rudolf Gorike Wien Dr Directional microphone with low vibration and wind sensitivity

Also Published As

Publication number Publication date
FR1242763A (en) 1960-09-30
DE1115302B (en) 1961-10-19
GB934632A (en) 1963-08-21
NL108508C (en)
NL234436A (en)
ES254241A1 (en) 1960-03-01

Similar Documents

Publication Publication Date Title
FR1222650A (en) Improvements in recording exploration devices
CH364848A (en) Device with a magnetostrictive resonator
CH375541A (en) Device for recording or reproducing acoustic oscillations with a variable acoustic impedance
FR1245602A (en) Magnetic transducer
FR1242146A (en) Magnetic transducer
CH437838A (en) Apparatus for reducing or eliminating the mutual interference in a multi-magnetic sound head
CH393217A (en) Drive device on a loom
FR1354754A (en) Bidirectional transducer
CH369292A (en) Drive on a device for sound recording and playback
CH414226A (en) Device for sensing holes in a recording medium
CH384887A (en) Electromechanical transducer for recording or scanning a groove-shaped recording track
CH389680A (en) Circuit arrangement for generating a control signal
CH352303A (en) Device for drilling down a casing
CH371311A (en) Device for the gradual advancement of tapes
CH346863A (en) Device for shaking vessels
CH360864A (en) Device for milling curves on curve organs
FR1178742A (en) Advanced training in cartridge loaders
CH431120A (en) Device for connecting a microphone provided with a detachable switch to a sound recording and / or reproducing device
AT196637B (en) Device for playing records with a rotatable record magazine
FR1158789A (en) Further training on strainers
AT187510B (en) Device for picking up perforated parts
CH374216A (en) Turntable for records with a large central opening
CH327133A (en) Arrangement with a rod-shaped magnetostrictive oscillator
CH373614A (en) Hydraulically controlled device
CH386712A (en) Recording device with a tape-shaped recording medium