FR491182A - Universal speaker - Google Patents

Universal speaker

Info

Publication number
FR491182A
FR491182A FR491182DA FR491182A FR 491182 A FR491182 A FR 491182A FR 491182D A FR491182D A FR 491182DA FR 491182 A FR491182 A FR 491182A
Authority
FR
France
Prior art keywords
universal speaker
speaker
universal
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
Alexandre Vaugean
John Rochat
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.)
JOHN ROCHAT
Original Assignee
JOHN ROCHAT
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 JOHN ROCHAT filed Critical JOHN ROCHAT
Application granted granted Critical
Publication of FR491182A publication Critical patent/FR491182A/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)
FR491182D 1915-05-15 1915-05-15 Universal speaker Expired FR491182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR491182T 1915-05-15

Publications (1)

Publication Number Publication Date
FR491182A true FR491182A (en) 1919-05-24

Family

ID=1527213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491182D Expired FR491182A (en) 1915-05-15 1915-05-15 Universal speaker

Country Status (1)

Country Link
FR (1) FR491182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968576C (en) * 1938-12-22 1958-03-06 Klangfilm Gmbh Loudspeaker arrangement for the transmission of stereo-acoustic performances

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968576C (en) * 1938-12-22 1958-03-06 Klangfilm Gmbh Loudspeaker arrangement for the transmission of stereo-acoustic performances

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