Sound producing device
AssigneexMEMS Labs, Inc.
InventorJemm Yue Liang
Life of this patent
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Abstract
A sound producing device is provided. The sound producing device includes a membrane, disposed within a chamber, controlled by a membrane control signal to cause a membrane movement; and a first deflector, disposed within a first opening by the membrane, controlled by a first deflector control signal to cause a first deflector rotation; wherein the sound producing device produces a plurality of air pulses via the membrane movement and the first deflector rotation, the plurality of air pulses has an air pulse rate, the air pulse rate is higher than a maximum human audible frequency; wherein the plurality of air pulses produces a non-zero offset in terms of sound pressure level, and the non-zero offset is a deviation from a zero sound pressure level.
Claims17
A sound producing device, comprising:
- a membrane, disposed within a chamber, controlled by a membrane control signal to cause a membrane movement;
- and
- a first deflector, disposed within a first opening by the membrane, controlled by a first deflector control signal to cause a first deflector rotation;
- wherein the sound producing device produces a plurality of air pulses via the membrane movement and the first deflector rotation, the plurality of air pulses has an air pulse rate, and the air pulse rate is higher than a maximum human audible frequency;
- wherein the plurality of air pulses produces a non-zero offset in terms of sound pressure level, and the non-zero offset is a deviation from a zero sound pressure level.
Dependencies are inferred from the claim text.