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2010-11-19T20:06:50Z
2010-12-13T14:41:02+01:00
Jouve S.A., EPO - Publication - KB, TaggedPDF v1.27
EP-0127247-A2-19841205
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EP-0127247-A2-19841205
A tunable response transducer (20) includes a frame (22) providing an opening (24) covered by a diaphragm and a motor (50,52,54) coupled to the diaphragm to cause motion of the diaphragm in response to motor action. A cavity (66) defined behind the diaphragm is vented through a second opening (26) provided in the frame. Venting through the second opening is controlled by a valve mechanism (40,42,44, 46) which is adjustable to vary selectively the damping of the frequency response characteristic of the transducer in the region of its principal resonant frequency.
A tunable response transducer (20) includes a frame (22) providing an opening (24) covered by a diaphragm and a motor (50,52,54) coupled to the diaphragm to cause motion of the diaphragm in response to motor action. A cavity (66) defined behind the diaphragm is vented through a second opening (26) provided in the frame. Venting through the second opening is controlled by a valve mechanism (40,42,44, 46) which is adjustable to vary selectively the damping of the frequency response characteristic of the transducer in the region of its principal resonant frequency.
en
European Patent Office
EP0127247
EP 0127247
H04R 01/22
H04R 11/00
Tunable response transducer
Tunable response transducer - European Patent Office - EP 0127247 A2
Tunable response transducer - European Patent Office - EP 0127247 A2
Adobe PDF Library 8.0
"EP0127247"; "EP 0127247"; "H04R 01/22"; "H04R 11/00"; "Tunable response transducer"
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1
B
15
EP
0127247
A2
1984-12-05
84300273
1984-01-17
US
497062
1983-05-23
H04R 01/22
H04R 11/00
HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
House, William Neal
Barlow, Roy James et al
Tunable response transducer
Wandler mit abstimmbarem Frequenzgang
Tunable response transducer
Transducteur avec caractéristique de réponse accordable
A tunable response transducer (20) includes a frame (22) providing an opening (24) covered by a diaphragm and a motor (50,52,54) coupled to the diaphragm to cause motion of the diaphragm in response to motor action. A cavity (66) defined behind the diaphragm is vented through a second opening (26) provided in the frame. Venting through the second opening is controlled by a valve mechanism (40,42,44, 46) which is adjustable to vary selectively the damping of the frequency response characteristic of the transducer in the region of its principal resonant frequency.
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