NL7008177A - - Google Patents
Info
- Publication number
- NL7008177A NL7008177A NL7008177A NL7008177A NL7008177A NL 7008177 A NL7008177 A NL 7008177A NL 7008177 A NL7008177 A NL 7008177A NL 7008177 A NL7008177 A NL 7008177A NL 7008177 A NL7008177 A NL 7008177A
- Authority
- NL
- Netherlands
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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6918401A FR2045129A5 (en) | 1969-06-04 | 1969-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7008177A true NL7008177A (en) | 1970-12-08 |
Family
ID=9035138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7008177A NL7008177A (en) | 1969-06-04 | 1970-06-04 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE751297A (en) |
| FR (1) | FR2045129A5 (en) |
| NL (1) | NL7008177A (en) |
-
1969
- 1969-06-04 FR FR6918401A patent/FR2045129A5/fr not_active Expired
-
1970
- 1970-06-01 BE BE751297D patent/BE751297A/en unknown
- 1970-06-04 NL NL7008177A patent/NL7008177A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE751297A (en) | 1970-11-16 |
| FR2045129A5 (en) | 1971-02-26 |