| They point to research showing that manatees cannot hear the low-pitched sound of slow-moving boats and thus avoid approaching vessels. |
| His voice was low-pitched, but the wind carried his words back to the patio. |
| If sound were involved, that would be fast enough to produce a low-pitched hum. |
| It is cropped close to the low-pitched gable roof of a ranch house where a mysterious figure enclosed in the oval medallion floats by. |
| His voice was low-pitched, self-assured, altogether a man's voice, the sort of man who was master of his own affairs. |
| One was a high-pitched sound that resembled a doorbell while the other was a low-pitched sound that gradually increased in pitch. |
