FR897298A - Electro-acoustic receiver - Google Patents

Electro-acoustic receiver

Info

Publication number
FR897298A
FR897298A FR897298DA FR897298A FR 897298 A FR897298 A FR 897298A FR 897298D A FR897298D A FR 897298DA FR 897298 A FR897298 A FR 897298A
Authority
FR
France
Prior art keywords
electro
acoustic receiver
acoustic
receiver
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
Other languages
French (fr)
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.)
Henry Radio Heinrich & Co
Original Assignee
Henry Radio Heinrich & Co
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 Henry Radio Heinrich & Co filed Critical Henry Radio Heinrich & Co
Application granted granted Critical
Publication of FR897298A publication Critical patent/FR897298A/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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR897298D 1942-08-18 1943-08-17 Electro-acoustic receiver Expired FR897298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE897298X 1942-08-18

Publications (1)

Publication Number Publication Date
FR897298A true FR897298A (en) 1945-03-16

Family

ID=6848635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR897298D Expired FR897298A (en) 1942-08-18 1943-08-17 Electro-acoustic receiver

Country Status (1)

Country Link
FR (1) FR897298A (en)

Similar Documents

Publication Publication Date Title
CH270405A (en) Microphone.
FR897298A (en) Electro-acoustic receiver
FR980016A (en) Interference receiver
FR892903A (en) Loud speaker
FI20228A (en) Spinnmunstycke
FR879177A (en) Receiver basket
FR899736A (en) Television receiver
FR890072A (en) Microphone
FR899685A (en) Receiver of t. s. f.
FR951009A (en) Radio receivers
FR899776A (en) Receiver of t. s. f. with built-in speaker
ES159628A2 (en) IMPROVEMENTS MADE
FI21171A (en) Sät att förädla Pappersmaterial
FI21230A (en) Sätt att använda sulfitavfallslut
FI22219A (en) Sätt att framställa sulfonamider
BE454393A (en) Bakhoven
ES155700A3 (en) CYCLOPATINET
ES156854A1 (en) HORNILLO-TERMO
FI19098A (en) Klädhängare
FI19828A (en) Ledkort
FI20110A (en) Sintrad hårdmetallegering
FI20127A (en) Flaska
FI20136A (en) Upprivbart omhölje
FI20404A (en) Svettlapp
FI20544A (en) Hetgasmotor