• Public

  • Public
  • Network
  • Groups
  • Popular
  • People

Three normalized tracks in audacity, showing sine sweep from lower to higher frequencies, all collapsing rapidly after 15kHz. The first track (Unitek) has low volume at the start, increasing linearly until 400Hz, then staying more-or-less equal constant, with some wobble around 5kHz, and falling slightly after 10kHz The second track (uGo) starts out louder, increasing in volume until ~200Hz, then staying level until ~2kHz, then falling slowly, with a bump at 10kHz. The third track (Creative) starts out even lounder, increasing until ~100Hz, then staying mostly level until 700Hz, then falling slightly until ~3kHz, then rising again for a peak at 6kHz, dropping a bit, rising again for another peak at 12kHz - both peaks as high as the 700Hz plateau - then dropping a bit to a bump at 15kHz, after which it collapses like the other cards.