Elongated-pattern sonic transducer
First Claim
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1. A sonic transducer comprising:
- A) a base;
B) a diaphragm forming end edges and side edges and having a width between its side edges and a length between its end edges that is at least 1.2 times the width;
C) means for converting between diaphragm motion and electrical signals; and
D) means for securing the diaphragm'"'"'s side edges to the base, thereby causing the diaphragm to have a lengthwise stiffness, and for securing its end edges to the base sufficiently more rigidly than the side edges that the diaphragm has a lengthwise stiffness within 50% of its widthwise stiffness.
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Abstract
A sonic transducer (10) includes an elongated diaphragm (12) secured to a base (14) by a clamping member (16). The shapes of the surfaces (26, 30) by which the base (14) and clamping element (16) engage the diaphragm (12) are different at the end regions (28) from what they are in the side regions (32). The result is a more-rigid clamping at the ends than at the sides, which causes the lengthwise and widthwise stiffnesses of the diaphragm to be more nearly equal and thus the sound production from various regions of the diaphragm to be more nearly in phase than they would be if the clamping were uniform.
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Citations
10 Claims
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1. A sonic transducer comprising:
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A) a base; B) a diaphragm forming end edges and side edges and having a width between its side edges and a length between its end edges that is at least 1.2 times the width; C) means for converting between diaphragm motion and electrical signals; and D) means for securing the diaphragm'"'"'s side edges to the base, thereby causing the diaphragm to have a lengthwise stiffness, and for securing its end edges to the base sufficiently more rigidly than the side edges that the diaphragm has a lengthwise stiffness within 50% of its widthwise stiffness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification