be inaudible

Examples (10)

• His voice faded until it was almost inaudible.
• The sound is inaudible to the human ear.
• The faint whisper was completely inaudible amidst the crowd's roar.
• Even with the microphone, her nervous mumble was barely inaudible.
• The high-frequency pitch is often inaudible to older adults.
• For many animals, ultrasound is not inaudible; they use it for navigation.
• The device emits a signal that is generally inaudible to humans.
• By the time he reached the back of the hall, his speech had become inaudible.
• The emergency siren was inaudible over the storm's violent winds.
• The teacher's quiet correction was inaudible to anyone beyond the first row.