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Audio Lexicon glossary

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About Audio Lexicon

DAWs / SYNTHESIZERS / EFFECTS

The audio glossary.

1355 definitions for recording, sound design and everything in between.

Browse 29 topics, search terms and acronyms, or open a definition for practical notes and references. Audio tools help with pitch, samples, tempo and level conversions.

Terminology can vary between products. Calculations show their units and assumptions so you can check whether they fit your task.

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Note ↔ frequency

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12-tone equal temperament; note 69 is the tuning reference. MIDI Note On numbers are integers 0–127; fractional / outside-range results are mathematical pitch coordinates, not messages.

Results use up to 8 significant digits; ≈ means rounded display. Whole-sample rounding is applied separately. Inputs are retained during this session; reloading resets them.

UNSW Physics · note numbers, cents and frequencies (opens in a new tab)