Tom DeVito 10.24.2011

Start: 9:00

  • Tried to solve the sound distortion problems
  • Found out that in order to pan or balance the most significant bit is the sign.
  • Took another shot at trying to resolve the hum which seemed worse now.  It just occurred to me that this might be because two channels are at max volume now, instead of just one.  I will have to remember to check this tomorrow
  • After many failed attempts to fix the problem, as well as the pan and balance function not being able to completely isolate the channels, I think its best to get two more midi shields and just have one for each finger.  The sound is pretty clear when only one channel is playing.  Not sure why this issue is happening, I even tied to isolate it by using the arduino that isn’t hooked up to anything.
  • The headphones port makes the same noise when not hooked up to the amplifiers.  It seems to have something to do with the ground not being isolated but everything I try either makes it so the midi commands won’t execute or theres not enough power for anything.
  • The reset pin has to be set high or the device is off.
  • I can eliminate the some of the noise by putting the channels on low volume til they are needed the main amplifier already does this though so its more a problem of the two channels.

end: 5:00