Digital signal processing involves taking an audio signal (it can be any signal but in this case it's audio)and digitally manipulating it to achieve the desired result. It may sound simple ...

Fun fact: While many people think of quantization as a new technology driven by the AI boom, its roots actually go back to signal processing and information theory from decades ago.

The VFD speed was set by an analog voltage signal, converted by an analog-to-digital converter (ADC), and has a quantization error, Q = full scale/number output states. For any analog input, noise ...