Class D micro-speaker

摘要

A micro-speaker. The micro-speaker includes a first plate, a second plate, and a diaphragm. The first plate is biased to a first voltage. The second plate is biased to a second voltage. The diaphragm is positioned between the first plate and the second plate and is configured to receive a digital signal. The digital signal causes the diaphragm to cycle between fully displaced toward the first plate and fully displaced toward the second plate, creating air pressure pulses that mimic the digital signal.

主权项

1. A micro-speaker comprising:
a first plate including a plurality of openings and biased to a first voltage; a second plate including a plurality of openings and biased to a second voltage; and a diaphragm positioned between the first plate and the second plate and configured to receive a digital signal, the digital signal causing the diaphragm to cycle between a first fully displaced position near the first plate and a second fully displaced position near the second plate, forcing air through the plurality of openings in the first plate and the second plate, and creating air pressure pulses that mimic the digital signal; and wherein the digital signal creates a sufficient bias such that the diaphragm is fully displaced immediately and does not stop at any point between the first fully displaced position and the second fully displaced position, the first fully displaced position being a first distance from the first plate such that the diaphragm does not contact the first plate, and the second fully displaced position being a second distance from the second plate such that the diaphragm does not contact the second plate.