audible sigh 1.25   He let out an audible sigh.
  audible gasp 1.18   And it was met with audible gasps.
  audible obscenity 0.99   He muttered a string of audible obscenities.
  audible alarm 0.72   Virtually all systems emit an audible alarm.
  audible voice 0.53   Then, in a barely audible voice, he said he did.
  audible sound 0.46   The ultrasound is the lamp, the audible sound is the light.
  audible range 0.26   One actually uses ultrasound, i.e. the frequency is far above the audible range.
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