A while back, we reviewed some basics on how to apply digital filters to sort out signals with undesirable elements riding on top of them, i.e. a square wave that’s being corrupted by a sinusoidal ...
Over the years controversy has raged back and forth on whether brick wall filters used in digital audio (namely for CD playback systems) exhibit phase shifts in the audio band (20Hz to 20kHz). Audio ...
In this DI, high school student Tommy Liu modifies a popular low-cost DIY oscilloscope to enhance its input noise rejection and ADC noise with anti-aliasing filtering and IIR filtering. Three ...
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