All Audio Fundamentals guides
Learn the audio concepts behind everyday editing decisions: frequency and musical pitch, EQ ranges, BPM and note timing, reference tones, and how pink noise differs from white or brown noise. These guides pair concise explanations with interactive browser tools, so you can hear or calculate the idea instead of memorizing a chart. Start with the frequency chart for EQ work, the note chart or pitch detector for tuning, and the BPM tools for delay and reverb timing.
Pink Noise Generator
Play pink noise instantly, compare white and brown profiles, set a timer, and download a local 30-second WAV without recording or uploading audio.
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Audio Frequency Chart: EQ Bands & Instruments
Map EQ bands, voice and instrument energy across 20 Hz–20 kHz, then isolate a problem range and test a short reference tone.
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Musical Note Frequency Chart & Calculator
Look up every note from C0 to B8 or convert notes and frequencies in either direction with an adjustable A4 reference.
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Online Pitch Detector: Note, Hz & Cents
Use your microphone to identify one steady note, its frequency and how many cents it sits sharp or flat. Audio stays in your browser.
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BPM to MS Calculator: Delay & Note Times
Convert a known tempo into straight, dotted, and triplet note times, or reverse a delay time back to BPM.
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Tap Tempo: Free Online BPM Counter
Tap along with any steady beat to estimate BPM, check timing stability and copy the result without using a microphone or uploading audio.
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Online Tone Generator: Play Sine, Square & Sweep Tones
Play an exact browser-generated tone, compare four waveforms or run a timed frequency sweep without uploading or recording audio.
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