FR623891A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR623891A
FR623891A FR623891DA FR623891A FR 623891 A FR623891 A FR 623891A FR 623891D A FR623891D A FR 623891DA FR 623891 A FR623891 A FR 623891A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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
Fong Chai Lu
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 FR623891A publication Critical patent/FR623891A/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)
FR623891D 1926-10-26 1926-10-26 Loud speaker Expired FR623891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR623891T 1926-10-26

Publications (1)

Publication Number Publication Date
FR623891A true FR623891A (en) 1927-07-02

Family

ID=8986721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR623891D Expired FR623891A (en) 1926-10-26 1926-10-26 Loud speaker

Country Status (1)

Country Link
FR (1) FR623891A (en)

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