Gain / Levels

What is it?

Gain is the input volume of a microphone — how much the signal is amplified as it enters the system. Levels are the resulting measured loudness, displayed on meters. Together they're audio's most basic discipline: set the gain so the voice sits in the healthy zone — strong enough to be clear above the noise floor, never so hot it clips (slams the ceiling and distorts into crackle).

Practical example

The two failure modes are heard daily on streams. Too low: the host's voice is a whisper under hiss; viewers crank their volume, then get blasted by a notification sound. Too high: every excited moment shatters into distorted crunch — and clipping is unfixable afterward; the waveform's tops were cut off at capture. The fix is the soundcheck ritual: speak at show volume, watch the meter, set gain so peaks ride high-green/low-yellow with headroom to spare. Sixty seconds before the show prevents the entire category.

Key things to know (non-technical)

• The meter colors are the whole interface: green = healthy, yellow = approaching, red = clipping — "keep it out of the red" is the first commandment of live audio.
• Gain vs volume: gain is set at the input (the capture); volume adjusts later (the playback). A bad gain can't be rescued by volume — garbage captured is garbage forever.
• Real voices are dynamic: set gain for the loudest the speaker gets (the laugh, the excitement), not their calm intro voice.
• Auto-gain exists and helps casual use, but it "breathes" (pumping levels as it chases the voice) — fixed gain after a soundcheck beats it for shows.

In Tupic Live

A pre-show soundcheck in Tupic Live — "say a few words at show volume," meter feedback, auto-suggested gain with clipping protection — institutionalizes the sixty seconds that separate broadcasts people can listen to from broadcasts people leave.