FR623776A - Acoustic amplifier device for loudspeakers, phonographs, and similar apparatus - Google Patents
Acoustic amplifier device for loudspeakers, phonographs, and similar apparatusInfo
- Publication number
- FR623776A FR623776A FR623776DA FR623776A FR 623776 A FR623776 A FR 623776A FR 623776D A FR623776D A FR 623776DA FR 623776 A FR623776 A FR 623776A
- Authority
- FR
- France
- Prior art keywords
- phonographs
- loudspeakers
- amplifier device
- similar apparatus
- acoustic amplifier
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR623776T | 1926-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR623776A true FR623776A (en) | 1927-06-30 |
Family
ID=8986655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR623776D Expired FR623776A (en) | 1926-10-28 | 1926-10-28 | Acoustic amplifier device for loudspeakers, phonographs, and similar apparatus |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR623776A (en) |
-
1926
- 1926-10-28 FR FR623776D patent/FR623776A/en not_active Expired
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