THE FEUTEX TOOLKIT

Audio Loop Sample Boundary

Find the nearest whole-sample boundary for a tempo-synced loop and report timing error.

Audio workspace● Runs in your browser

01 Your input

Sample ratesamples/sTempo (BPM)BPMBeatsbeats

02 Your result

View or copy raw result data

Result data

Formula

Samples = Math.round(sample_rate*60*beats/bpm); Error ms = 1000*(Math.round(sample_rate*60*beats/bpm)/sample_rate-60*beats/bpm)

Made for real tasks

Find the nearest whole-sample boundary for a tempo-synced loop and report timing error.
Compare two scenarios by changing the inputs and rerunning the tool.

Explore step-by-step workflows →

Worked example

Inputs

Sample rate: 48000 samples/s
Tempo (BPM): 123 BPM
Beats: 16 beats

Expected results

Samples: 374634 samples
Error ms: -0.003048780488 ms

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter sample rate, bpm, beats.
Use consistent units shown beside each input. Run the calculation and review the assumptions below.

Try this example

{
  "sample_rate": 48000,
  "bpm": 123,
  "beats": 16
}

Accuracy and scope

Fixed tempo and quarter-note beat count; loop length is rounded to the nearest sample. Reported error is rounded minus ideal duration, not audio drift compensation or zero-crossing analysis.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.