FR565956A - Projector-sound amplifier - Google Patents
Projector-sound amplifierInfo
- 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
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 |
---|---|---|---|
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) |
-
1923
- 1923-05-09 FR FR565956D patent/FR565956A/en not_active Expired
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