EP 0614327 B1 19980520 - Electroacoustic transducer having a partition wall and a mask wall
Title (en)
Electroacoustic transducer having a partition wall and a mask wall
Title (de)
Elektroakustischer Wandler mit einer Trennwand und einer Maskenwand
Title (fr)
Transducteur électro-acoustique ayant une paroi de séparation et une paroi de masque
Publication
Application
Priority
AT 41993 A 19930304
Abstract (en)
[origin: US5303209A] In an electroacoustic transducer (1) having a diaphragm (5), behind which a partition wall (24) is situated, which partition wall extends transversely of the transducer axis (9) and is traversed by partition openings (29, 30, 31, 32) having a small cross-sectional area of at the most 0.2 mm2, and having a mask wall (38) arranged adjacent the partition wall and provided with mask-wall openings (39, 40, 41, 42) of large cross-sectional area, in the other wall (38) being coincident with at least one opening (29, 30, 31, 32) of small cross-sectional area, each opening (29, 30, 31, 32) of small cross-sectional area is situated between two spacer elements (49, 50, 51, 52, 53, 54, 55, 56) arranged between the two walls (24, 38), and each time two spacer elements (49, 50, 51, 52, 53, 54, 55, 56) together with the two walls (34, 38) bound a duct-like gap (57, 58, 59, 60) between the two walls (24, 38) in order to form an acoustic resistance.
IPC 1-7
IPC 8 full level
H04R 1/28 (2006.01); H04R 1/22 (2006.01); H04R 9/02 (2006.01)
CPC (source: EP US)
H04R 1/225 (2013.01 - EP US); H04R 9/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE DK FR GB
DOCDB simple family (publication)
US 5303209 A 19940412; AT 400911 B 19960425; AT A41993 A 19950815; DE 59405970 D1 19980625; EP 0614327 A1 19940907; EP 0614327 B1 19980520; JP H06327082 A 19941125
DOCDB simple family (application)
US 7871893 A 19930616; AT 41993 A 19930304; DE 59405970 T 19940228; EP 94200503 A 19940228; JP 3145094 A 19940301