Therefore amplified vibration on the skin gives only information about low-pitched sounds.
It picks up all low-pitched sounds but not high-pitched sounds.
They knew the box could hear low-pitched sounds, and it could feel through the square pad on its base.
But interpack speech and Samnorsk were low-pitched sound - they would scarcely be affected.
A low-pitched humming sound was coming from it.
The elevator door opened with a low-pitched sound of music.
With a creaking, low-pitched sound, the monster moved upward.
The project, which began last January, involves sending intense pulses of low-pitched sound through the oceans.
There was very little noise, just a low-pitched humming sound in the background.
This is because low-pitched sounds have long wavelengths which cannot resolve the difference between closely spaced objects.