Patent ID: 8553909

Claim:
An audio processing system comprising: a dynamic element matching (DEM) component having an output comprising a first number of bits, and further having an input comprising a second number of bits configured to receive a digital audio signal in a first format, wherein the DEM component is configured to: convert the digital audio signal into a second format; while converting the digital audio signal into the second format, randomize an ordering of the output bits of the DEM component with respect to the input bits of the DEM component; and provide the converted digital audio signal through the output bits of the DEM component according to the randomized ordering of the output bits of the DEM component; a digital-to-analog converter (DAC) having an input comprising a first number of bits configured to receive the converted digital audio signal from the DEM component, wherein the DAC is configured to convert the converted digital audio signal into a corresponding analog signal; and an amplifier network having an input configured to receive the analog signal and generate a modulated digital signal based on the analog signal, wherein the amplifier network comprises a negative feedback loop between an output of the amplifier network and the input of the amplifier network, implementing a transfer function configured to reconstruct the analog signal from the modulated digital signal while attenuating quantization noise to produce an amplified driving signal at the output of the amplifier network.