Glossary
What is a plosive?
The thump when a P or B sends a puff of air straight into the microphone. It reads as a low boom rather than a word, and on small speakers it can disappear entirely, which is why it so often survives to publication.
Plosives are a recording problem with a recording fix: a pop filter, or simply speaking slightly across the microphone instead of straight into it. Both cost nothing and beat any repair.
When one is already in the take, the energy is almost entirely below about 100 Hz — under the useful range of a voice. A high-pass filter set around 80–100 Hz removes most of the thump and takes nothing you would miss, which is why Cast applies one automatically at 80 Hz on every voice lane — it is part of the presets, not a control you have to find.
A plosive that is loud enough to distort the recording cannot be repaired this way: the waveform is already clipped, and no filter restores what was never captured. That one is worth re-recording.
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