FR521300A - Cornet acoustique pour buts techniques - Google Patents

Cornet acoustique pour buts techniques

Info

Publication number
FR521300A
FR521300A FR521300A FR521300DA FR521300A FR 521300 A FR521300 A FR 521300A FR 521300 A FR521300 A FR 521300A FR 521300D A FR521300D A FR 521300DA FR 521300 A FR521300 A FR 521300A
Authority
FR
France
Prior art keywords
acoustic horn
technical purposes
purposes
horn
technical
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
FR521300A
Other languages
English (en)
Inventor
Arnold Hartmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR521300A publication Critical patent/FR521300A/fr
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
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR521300A 1920-07-28 1920-07-28 Cornet acoustique pour buts techniques Expired FR521300A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR521300T 1920-07-28

Publications (1)

Publication Number Publication Date
FR521300A true FR521300A (fr) 1921-07-09

Family

ID=8917178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR521300A Expired FR521300A (fr) 1920-07-28 1920-07-28 Cornet acoustique pour buts techniques

Country Status (1)

Country Link
FR (1) FR521300A (fr)

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