Audio production2 min read
Noise floor
In short
The noise floor is the level of the constant, quiet sound your recording chain always carries, below the actual signal: mic self-noise, preamp hiss, room hum. A lower noise floor means cleaner audio and less to remove later.
Why it matters
The noise floor sets a ceiling on how clean your recording can be. Everything above it is signal you keep; everything at it is what you will be tempted to remove later, and aggressive removal is where word endings get lost. The lower the floor at capture, the less damage cleanup has to risk.
In practice
Measure it in a quiet moment before you speak. If it is high, fix the source first: a quieter room, a better mic position, a cleaner preamp. That buys more than any software denoiser can, because it never touches the speech.
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