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Audio Calculators

Audio file size and bitrate from sample rate and bit depth, recording time, BPM to milliseconds and note lengths.

Key audio formulas

Audio File Sizeuncompressed bytes = sample rate × bit depth × channels × seconds ÷ 8
Audio Bitratebitrate = sample rate × bit depth × channels
Recording Timeseconds = usable bytes × 8 ÷ bitrate in bits per second
Sample RateNyquist = sample rate ÷ 2 · latency = buffer ÷ sample rate
BPMbeat in ms = 60,000 ÷ BPM
Frequencyf = 1 / T

Audio questions

What delay time should I use at 120 BPM?

A quarter note is 500 ms, an eighth 250 ms, and the classic dotted-eighth slapback 375 ms.