Electrical audio signal processing systems and devices – Noise or distortion suppression – Interpolation
Patent
1994-05-23
1996-04-09
Chan, Wing F.
Electrical audio signal processing systems and devices
Noise or distortion suppression
Interpolation
336175, 336176, H04B 1500
Patent
active
055069096
ABSTRACT:
A noise filtering device includes an upper casing member and a mating lower casing member, each defining a recess with a flexible flange disposed along the periphery thereof for receiving therein a magnet having inclined side surfaces. The flexible flange is bent inward to abut against the inclined side surfaces of the magnet so as to securely hold the magnet within the recess of each of the casing members. A connection member which is constituted by a portion of each of the casing members and has ends respectively secured to the casing members is provided to hold the casing members together along one side thereof so as to allow the casing members to be rotatable relative to each other about the connection member. A groove is formed on each of the magnets and extending from one side of the casing members to the opposite side to allow a signal wire to be received therebetween to extend through the noise filtering device. A pin is formed on an edge of the upper casing members, having an expanded free end to insert into a hole, having a complementary shape, formed on a confronting edge of the lower casing to secure the upper casing to the lower casing so as to hold the signal wire between the magnets disposed in the casing members.
REFERENCES:
patent: 4970476 (1990-11-01), Kitagawa
patent: 5373277 (1994-12-01), Naito
Chan Wing F.
Jet Man Enterprise Co., Ltd.
Klein David I.
Oh Minsun
Rosenberg Morton J.
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