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Guide for idiot to testing ipod with RMAA needed, Brief but enough
4sure
post Aug 10 2012, 15:19
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Hi there. Can someone a little bit bother to explain (briefly) how to measure ipod etc. with RightMark Audio Analyzer?


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skamp
post Aug 10 2012, 16:22
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It is rather trivial, actually.

  • Generate a 16 bit / 44.1 kHz test signal and calibration signal .wav files with RMAA. Put those .wav files on the iPod.
  • Connect the iPod to the line input of your soundcard. Use either the headphone jack or the Line Out Dock with a special cable.
  • If you decide to use the headphone jack, you might want to measure the iPod with a "load", i.e. with headphones attached. You'll need a 3.5mm jack splitter for that. Connect the splitter to the iPod's headphone jack, plug the headphones into the splitter, as well as the 3.5mm male-male cable from your soundcard.
  • Disable all sound processing features on the iPod (EQ).
  • Set the volume on the iPod to the maximum (0 dB, I don't think it goes higher, so it shouldn't clip). Skip this if you're using the LOD.
  • Play the calibration .wav file on the iPod and record it with your soundcard, using any audio recording software (e.g. Audacity).
  • Repeat the previous step and adjust the recording volume on your soundcard until the recorded wave is close to 0 dBFS (but don't go too high and make it clip!).
  • Play the test signal on your iPod and record it with your soundcard.
  • Load the recorded test signal .wav file in RMAA (not the one on the iPod).
  • Export the results as HTML + images


This post has been edited by skamp: Aug 10 2012, 16:49


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