| http://www.w3.org/ns/prov#value | - 20090033419CLASS D AMPLIFIER WITH INCREASED EFFICIENCY - The present invention is a method of operating a speaker by converting an audio signal to a pulse-width modulated signal that has a plurality of positive pulses and a plurality of negative pulses as a function of the audio signal, then driving an H-bridge circuit interconnected to a speaker, wherein the H-bridge circuit comprises an A-side a
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