I din’t know if it would doo what you want but giveawayoftheday web site has an audio editor as their giveaway today.
I usually use Audacity but like geno888 what you posted is over my head & I would need to Google it.
[QUOTE=js1234;2639800] But is possible to copy this signal to one of stereo channel?
I want to make totaly different signals (one for left and aanother to right channel)![/QUOTE]
With Audacity you can use the pulldown to the left of the audio file. You can split the stereo & work with each track. Then put them back together.