MICROPHONE ARRANGEMENT COMPRISING PRESSURE GRADIENT TRANSDUCERS
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United States of America Patent
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N/A
Issued Date -
Jul 30, 2009
app pub date -
Feb 23, 2009
filing date -
Nov 13, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A microphone arrangement includes pressure gradient transducers that include a diaphragm. Each pressure gradient transducer has a first sound inlet opening that leads to a front portion of the diaphragm and a second sound inlet opening that leads to a back portion of the diaphragm. The directional characteristic of each pressure gradient transducer includes an omni portion, a figure-eight portion, and a direction of maximum sensitivity in a main direction. The acoustic centers of the pressure gradient transducers lie within an imaginary sphere having a radius corresponding to about double the largest dimension of the diaphragm. Projections of the main directions of the pressure gradient transducers form angles between about 110° and about 130° in a base plane.
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