Like most hifi enthusiast, i have problems with bass reflection of the walls of my listening room, resulting in standing waves.
A solution would be to drive a loudspeaker near the back wall with an delayed, inverted signal of the original fron speakers, to cancel the bass.
Maybe a Raspberry Pi with the Wolfson Audio Card is able to do that.
The card must be configured to filter out all frequenciey below 200Hz, delay the signal about 1ms (must be adjusted exactly accoring to the travel time of the sound through the room, invert it and drive a loud speaker.
Is there anyone out there who could give some information on how to do that?
Especially the programming of the integrated DSP for the delay seems to be complicated.
The only "professional" solution i found is the "E-Trap", an US product which costs around $2000.-
If this could be made with a pi, i think a lot of people would pimp there listening rooms with such a solution.
