omega;215919 Wrote: > -opaqueice > > Hi! > > I have installed Audacity & audiodiffmaker today and started some > testing. > > My Laptop only have a Mono-Mic in, so a tested on my "Slimserver PC" > > I wanted to learn & Test Audacity and audiodiffmaker before i began > testing on the SB3 & DAC. > > I connected my NAD CD player to the line in on the Soundcard. > Started testing with a Music Audio CD. > > But i always get a audible "difference wave" (A-B) how matter i do. > > > I have tripple checked all settings Line in levels etc, and i start > recording as careful i can be. > (Same start point pressing "rec" in the programs and "Play" on the CD > player. > > But i end up with the "same" diff file how matter i do. > > I tried to record both from audiodiffmaker and Audacity but the same > result. > > The diff file is almost quiet but i can hear the track/song very very > very weak. > (I can follow & recognize the song easy) > > And i pickup "much" interference from the PC, Fan noise etc. > > I tried the SB3 analog output for a test run but there is the same > "strange" diff file there to. > > I think i need som better soundcard that is 100% quiet and have a > S/PDIF in for this test? > > But why this diff file ? i shall be quiet? i don´t change anything > during the A and B recordings. > > And this test must be quiet "during tuning", otherwise it´s useless to > go on with this. > > Do you have some tips regarding this? > > > Best Regards! > > /Mats :-)
Omega (Mats), I would not start with music. Instead, I suggest using a standard 1 kHz wav file (either from the CD player or Squeezebox). Using this "fixed" frequency, you may be able to hear some pattern (harmonics, etc) in the diff file. With music, I'm afraid the signal is too complicated to hear a real difference. -- ezkcdude There are 10 kind of people in the world - those who understand binary and those who don't. SHINYMETAL '*Site*' (http://www.ezdiyaudio.com)| '*RSS*' (http://www2.kumc.edu/students/ezamir/rss/ezdiyaudio.xml) |'*Forum*' (http://ezdiyaudio.informe.com) ------------------------------------------------------------------------ ezkcdude's Profile: http://forums.slimdevices.com/member.php?userid=2545 View this thread: http://forums.slimdevices.com/showthread.php?t=36503
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