During routine monitoring of the system’s output waveform (acoustic / respiratory / pneumatic), a transient, non-periodic crack was noted specifically at the transition from peak pressure release to baseline in the exhale stream.
Recurrence of audible crack during the exhale phase of output cycle.
Here’s a short write-up based on the phrase “output exhale crack,” interpreted as a technical or observational note (e.g., in audio analysis, respiratory monitoring, or mechanical diagnostics).