08:58 <whitequark> oh, harmonics

08:59 <whitequark> Fabrice Bellard used them to output DVB-T with a regular VGA video card

08:59 <whitequark> http://bellard.org/dvbt/

09:06 <Fallenou> this guy is really dead crazy

09:23 <roh> jup. he is.

09:23 <roh> but sadly its not useable that way properly. after all its far beyond spec und doesn only work on a whim

09:24 <roh> also its afaik not realtime and needs heavily preprocessed (modulated in sw) data

09:27 <whitequark> well I guess with fast enough CPU you could preprocess that in realtime

09:27 <whitequark> or maybe CUDA, as this task seems to be nicely parallelizable

09:28 <roh> whatfor? total brainless waste of electricity

09:28 <whitequark> no clue

09:28 <roh> there are affordable modultors for dvb-t -c -s and the hd variants available right now.

09:29 <roh> check for the DATV stuff... digital amateur tv. these switched to digital dvb modulated schemes some time ago too.. since bandwith is rare, one needs to use it as good as possible

09:31 <roh> and for sure its of no use to use abuse graphicscard for this. you get so much unwanted frequencies and noise in neighbouring bands that you will rather disturb other transmissions than get it to work outside of a lab setup

09:31 <roh> doing that was more for 'show' than for using it ;)

09:31 <roh> nice show indeed that was

09:31 <whitequark> sure, I understand that :)

09:37 <roh> if you want to get into such stuff (digital atv) i can give you some pointers to equipment

12:58 <whitequark> roh: not atm

12:58 <whitequark> but thanks for the offer

13:11 <wpwrak> whitequark: nice DVB-T generator. i like that level of madness ;-)