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FR565956A - Projector-sound amplifier - Google Patents

Projector-sound amplifier

Info

Publication number
FR565956A
FR565956A FR565956DA FR565956A FR 565956 A FR565956 A FR 565956A FR 565956D A FR565956D A FR 565956DA FR 565956 A FR565956 A FR 565956A
Authority
FR
France
Prior art keywords
projector
sound amplifier
amplifier
sound
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
Georges-Charles Vacher
Theodore-Marie Schmitt
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 filed Critical
Application granted granted Critical
Publication of FR565956A publication Critical patent/FR565956A/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)
FR565956D 1923-05-09 1923-05-09 Projector-sound amplifier Expired FR565956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR565956T 1923-05-09

Publications (1)

Publication Number Publication Date
FR565956A true FR565956A (en) 1924-02-07

Family

ID=8946773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR565956D Expired FR565956A (en) 1923-05-09 1923-05-09 Projector-sound amplifier

Country Status (1)

Country Link
FR (1) FR565956A (en)

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