Sound producing device
AssigneexMEMS Labs, Inc.
InventorsJemm Yue Liang, Lei Chen, Martin George Lim
Life of this patent
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Abstract
A sound producing device includes at least one air pulse generating element. Each of the at least one air pulse generating element includes a membrane, a first air chamber and at least one opening, wherein a chamber pressure exists in the first air chamber, and the opening is connected between the first air chamber and an ambient surrounding the sound producing device. The membrane is actuated to change the chamber pressure of the first air chamber to generate a plurality of air pulses, the air pulses are propagated through the at least one opening, the air pulses produce a non-zero offset in terms of sound pressure level, and the non-zero offset is a deviation from a pressure value of an ambient pressure outside the sound producing device.
Claims30
A sound producing device, comprising:
- at least one air pulse generating element, each of the at least one air pulse generating element comprising:
- a membrane;
- a first air chamber, wherein a chamber pressure exists in the first air chamber;
- and
- at least one opening connected between the first air chamber and an ambient surrounding the sound producing device;
- wherein the membrane is actuated to change the chamber pressure of the first air chamber to generate a plurality of air pulses, the plurality of air pulses are propagated through the at least one opening, the plurality of air pulses produce a non-zero offset in terms of sound pressure level, and the non-zero offset is a deviation from a pressure value of an ambient pressure outside the sound producing device.
Dependencies are inferred from the claim text.