autoreverb chung is a universal reverb effect that takes any sound from the selected input (ex : the system mixer) and sends its reverb to the selected output (ex : the output speakers) with time delay, volume, and up to six plugins tone dsp effects . When connected to to system mixer as input and output , it adds reverb effects to all the computer's any incoming sounds . It is written in freebasic and runs as a standalone application .Connected to the mic as input and external distant speakers as output , it can add extra reverb echo to the room where you play music piano instrument even not connected to the computer . I use it with a Roland go piano ConcertGrand and it sounds better than a real piano.
link => https://sourceforge.net/projects/autoreverb-chung/