Howling Noise

I`ve finally found a solution to the howling noise my pc was making.
Audio demo: howling-noise (60dB gain from the original!)


  • Both soundcards on both speakersets had the same “noise” (meaning it couldn`t be the soundcard, cabling system or speakers!)
  • Shutting down my sequencer stopped the noise
  • The noise was periodic
  • The soundcard`s controlpanel VUmeters lighten up so the problem was “in the box”.

The problem seemed to be in the box, next step was locating the problem.
It could be:

  1. Routing scheme problem
  2. Instrument
  3. Effect

It seemed to be an instrument with effects on it. The effects on the channel seemed to cause the problem.

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