GB360510A - - Google Patents
Info
- Publication number
- GB360510A GB360510A GB24391/30A GB2439130A GB360510A GB 360510 A GB360510 A GB 360510A GB 24391/30 A GB24391/30 A GB 24391/30A GB 2439130 A GB2439130 A GB 2439130A GB 360510 A GB360510 A GB 360510A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- apertures
- sound guide
- loud
- horn
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Road Signs Or Road Markings (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE581341T | 1930-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB360510A true GB360510A (enrdf_load_html_response) | 1931-11-12 |
Family
ID=31895413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24391/30A Expired GB360510A (enrdf_load_html_response) | 1930-05-24 | 1930-08-14 |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT126062B (enrdf_load_html_response) |
DE (1) | DE581341C (enrdf_load_html_response) |
FR (1) | FR700370A (enrdf_load_html_response) |
GB (1) | GB360510A (enrdf_load_html_response) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069686B (enrdf_load_html_response) * | 1959-11-26 |
-
1930
- 1930-05-24 DE DE1930581341D patent/DE581341C/de not_active Expired
- 1930-07-31 AT AT126062D patent/AT126062B/de active
- 1930-08-05 FR FR700370D patent/FR700370A/fr not_active Expired
- 1930-08-14 GB GB24391/30A patent/GB360510A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR700370A (fr) | 1931-02-27 |
AT126062B (de) | 1931-12-28 |
DE581341C (de) | 1933-07-29 |
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