FR19671E - Electro-acoustic receiving device - Google Patents

Electro-acoustic receiving device

Info

Publication number
FR19671E
FR19671E FR19671DA FR19671E FR 19671 E FR19671 E FR 19671E FR 19671D A FR19671D A FR 19671DA FR 19671 E FR19671 E FR 19671E
Authority
FR
France
Prior art keywords
electro
receiving device
acoustic receiving
acoustic
receiving
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)
Inventor
Paul Franck-Valery
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.)
PAUL FRANCK VALERY
Original Assignee
PAUL FRANCK VALERY
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 PAUL FRANCK VALERY filed Critical PAUL FRANCK VALERY
Application granted granted Critical
Publication of FR19671E publication Critical patent/FR19671E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR19671D 1913-11-06 1914-01-23 Electro-acoustic receiving device Expired FR19671E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR474181T 1913-11-06
FR19671T 1914-01-23

Publications (1)

Publication Number Publication Date
FR19671E true FR19671E (en) 1915-05-05

Family

ID=1360857

Family Applications (1)

Application Number Title Priority Date Filing Date
FR19671D Expired FR19671E (en) 1913-11-06 1914-01-23 Electro-acoustic receiving device

Country Status (1)

Country Link
FR (1) FR19671E (en)

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