Systems and methods for performance improvements in digital switching
amplifiers using a low delay corrector. In one embodiment, a digital
pulse width modulation (PWM) amplifier includes a signal processing plant
configured to receive and process an input audio signal. The amplifier
also includes a low delay corrector configured to receive signals output
by the plant. The output of the low delay corrector is added to the input
audio signal as feedback. The plant may consist of a modulator and power
switch, a noise shaper, or any other type of plant. An analog-to-digital
converter (ADC) may be provided to convert the output audio signal to a
digital signal. Filtering may be implemented before or after the ADC, and
a decimator may be placed after the ADC if it is an oversampling ADC.