Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1995-11-20
1998-09-15
Kuntz, Curtis
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
381 711, 381187, H04R 2500
Patent
active
058091564
ABSTRACT:
A sound reproduction device such as a headphone with active noise compensation has a housing and a transducer for converting electrical signals to sound waves is disposed within the housing. The transducer has a diaphragm for separating the volume (V.sub.2) in front of the diaphragm from the volume (V.sub.1) to the rear of the diaphragm. The transducer diaphragm and rear volume (V.sub.1) have a determined compliance. The sound reproduction device includes active noise compensation components for reducing unwanted noise at the output of the transducer. The diaphragm has a compliance (N.sub.M) which is less than the compliance (N.sub.1) of the rear volume (V.sub.1). The diaphragm is preferably constructed from a plurality of layers. In a further preferred arrangement, a damping element is disposed very close to the rear side of the diaphragm. A preferred construction for optimizing the voice coil is described. In an active noise compensation construction employing a microphone having a central axis for picking up noise, a preferred arrangement orients the central microphone axis at an angle of about 45.degree. relative to the central axis of the transducer.
REFERENCES:
patent: 3098307 (1963-07-01), Caldwell
patent: 4107479 (1978-08-01), Heil
patent: 4140203 (1979-02-01), Niguchi
patent: 4276452 (1981-06-01), Suyama et al.
patent: 4570746 (1986-02-01), Das et al.
patent: 4922542 (1990-05-01), Sapiejewski
patent: 5162619 (1992-11-01), Thiele
patent: 5185807 (1993-02-01), Bergin
Article "Larm kontra Larm", Elektronik 19/1992, pp. 44-48.
Bartels Volker
Markmann Burkhard
Barnie Rexford N.
Kuntz Curtis
Sennheiser electronic KG
LandOfFree
Sound reproduction device with active noise compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sound reproduction device with active noise compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound reproduction device with active noise compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-97296