Hi the list. I have a trouble when i try to transfer music from a analogique source to my computer. I've got a noise in the background, betwen 3000 and 6000 Hz. For the moment i use the soundcard of my pc. Here the answer of lspci 0000:00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2) By default jackd is launch with this following setup : Priority 0 Frames/period 1024 Sample rate 48000 Periods/buffer 2 Dither none Any of you have a idea to reduce this annoying noise, this setup is good according to my soudcard ? Thanks for your help. Cheers P'tit Louis