DE267123C - - Google Patents
Info
- Publication number
- DE267123C DE267123C DENDAT267123D DE267123DA DE267123C DE 267123 C DE267123 C DE 267123C DE NDAT267123 D DENDAT267123 D DE NDAT267123D DE 267123D A DE267123D A DE 267123DA DE 267123 C DE267123 C DE 267123C
- Authority
- DE
- Germany
- Prior art keywords
- sound amplifier
- sound
- mouth
- voice
- handle
- 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.)
- Active
Links
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 235000003560 Valerianella locusta Nutrition 0.000 description 1
- 240000004668 Valerianella locusta Species 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000000537 nasal bone Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- -1 velvet Substances 0.000 description 1
- 210000000216 zygoma Anatomy 0.000 description 1
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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE267123C true DE267123C (enrdf_load_html_response) |
Family
ID=524204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT267123D Active DE267123C (enrdf_load_html_response) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE267123C (enrdf_load_html_response) |
-
0
- DE DENDAT267123D patent/DE267123C/de active Active
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