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Glossary · Audio

What is system audio?

Also called: internal audio, desktop audio, loopback audio, computer sound

Definition

System audio is the sound the computer itself is playing, as opposed to sound picked up by a microphone.

Recording system audio captures a video’s soundtrack, a call, or an app’s sounds directly, with no speakers or microphone in between. On Windows this is done by "loopback": tapping the signal on its way to the output device.

Only sound sent to the device being tapped is recorded, which is usually the default output. If a recording has no system sound, the audio was probably playing through a different device.

In Sceed

Sceed records system audio and the microphone as separate lanes, so each can be levelled or muted after the take.

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Related terms

Audio track
An audio track is one stream of sound in a recording, such as the microphone or the computer’s sound, that can be adjusted separately from the others.
Noise gate
A noise gate silences an audio signal whenever it falls below a set volume, removing background noise between words.
Normalization
Normalization adjusts the volume of a recording to a consistent target level.

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