Beginner DSD and scanner question

I know that there are P25 and some sort of digital EDACS system nearby and want to decode them with DSD. What kind of scanner do I need?Do I need a trunk tracking scanner capable of tracking EDACS or any conventional analog scanner with discriminator tap will work?

Any scanner with a discriminator tap will do. DSD is only decoding audio, it doesn't matter what your scanner is doing or capable of doing just as long as an audio feed is being fed into your computer.