Patent ID: 8618875

Claim:
A multi-channel class-D amplifier comprising: a signal source that provides a plurality of input signals and generates synchronization information, the synchronization information comprising information for switching frequencies, processing offsets and a coded synchronization signal comprising coded portions; and a plurality of class-D amplifier channel modules, each class-D amplifier channel module of the plurality of class-D amplifier channel modules being configured to process a corresponding input signal from the plurality of input signals to produce a corresponding output signal, each class-D amplifier channel module of the plurality of class-D amplifier channel modules comprising a synchronization module configured to recognize an occurrence of its assigned coded signal and upon recognition generate a sync signal for a corresponding class-D amplifier channel module to process a corresponding input signal, wherein the switching frequencies employed by the plurality of class-D amplifier channel modules are substantially similar to one another and the processing of the plurality of input signals is offset in time across the plurality of class-D amplifier channel modules according to the processing offsets.