What does DSP mean in car audio?

[SanLincoln]

DSP, also known as an audio processor, is used for processing digital signals. Its internal structure generally consists of an input section and an output section. The internal functions are more comprehensive, with some featuring draggable programming processing modules that allow users to freely configure the system. The audio processing functions typically include the following: Input section: Input gain control (INPUT GAIN), input equalization (multi-band parametric EQ) adjustment (INPUT EQ), and other functions. Output section: Generally includes signal input distribution routing selection (ROUTE), high-pass filter (HPF), low-pass filter (LPF), equalizer (OUTPUT EQ), polarity (POLARITY), and other functions.