BE337525A - - Google Patents
Info
- Publication number
- BE337525A BE337525A BE337525DA BE337525A BE 337525 A BE337525 A BE 337525A BE 337525D A BE337525D A BE 337525DA BE 337525 A BE337525 A BE 337525A
- Authority
- BE
- Belgium
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
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1008—Earpieces of the supra-aural or circum-aural type
-
- 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
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
- H04R1/1075—Mountings of transducers in earphones or headphones
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR605038T | 1925-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE337525A true BE337525A (enrdf_load_stackoverflow) |
Family
ID=8973695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE337525D BE337525A (enrdf_load_stackoverflow) | 1925-10-26 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1784172A (enrdf_load_stackoverflow) |
| BE (1) | BE337525A (enrdf_load_stackoverflow) |
| FR (1) | FR605038A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2614646A (en) * | 1952-10-21 | Frequency receiving bell with an |
-
0
- BE BE337525D patent/BE337525A/xx unknown
-
1925
- 1925-10-26 FR FR605038D patent/FR605038A/fr not_active Expired
-
1926
- 1926-10-11 US US140911A patent/US1784172A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR605038A (fr) | 1926-05-18 |
| US1784172A (en) | 1930-12-09 |