What do you call the circuit which employs an analog to digital converter, a mathematical transform, a digital to analog converter and a low pass filter?

A Digital Signal Processor (DSP) is a specialized microprocessor designed specifically for manipulating signals in the digital domain. The complete hardware chain for DSP typically starts with an analog-to-digital converter (ADC) to translate real-world analog signals into binary data. Once in the digital domain, mathematical transforms (such as the Fast Fourier Transform) are applied to filter, compress, or otherwise alter the signal mathematically. Finally, a digital-to-analog converter (DAC) turns the processed binary data back into an analog signal, and a low-pass filter smooths out the rough steps introduced by the digital conversion. Distractors like 'Digital transformer' or 'Mathematical transformer' are fabricated terms.