Definition of subaudible
1
: too quiet or obscured to be heard clearly : inaudible or barely audible
- … swaying in time with the rhythm, whisper-singing along at a subaudible level …
- —Karen Ravn
- … subaudible messages, i.e. auditory stimuli which are played at a low volume and under … music, ocean waves, etc. so that they cannot be heard.
- —Geoffrey P Lantos
2
: infrasonic 1
- subaudible tones/frequencies
