None of them spoke in what the kin would have considered an audible range.

Scotty joined in just as the sound seemed on the verge of passing from the audible range.

The audible range of sound is 20 hertz-20 kilohertz.

That's the laser, translated into sound and then stepped down to the audible range.

The sound was very high and faint-like a dog whistle that had been pitch-lowered into just audible human range.

Frequencies outside of the human audible range can be omitted in additive synthesis.

The music swelled and developed a throbbing almost below the audible range.

One actually uses ultrasound, i.e. the frequency is far above the audible range.

There was a strange whining sound, almost above my audible range.

He knew that the sound-waves of the faster time-plane were at a frequency which was far beyond his present audible range.