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Photography & video

Sound Travel Delay Calculator

Estimate audio arrival delay relative to a camera or another recording position.

Units clearly labeledCheck practical equipment limits
Photo & video desk
Photo & video desk

Match the sensor, lens and output settings to your equipment.

See the method

Set up your shot

Runs on your device

Your camera calculation

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter sound travel distance, speed of sound, video frame rate.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Delay = distance/speed of sound. Frame offset = delay×frame rate.

A WORKED EXAMPLE

Using sound travel distance = 20 m, speed of sound = 343 m/s, video frame rate = 25 fps, the result is 58.3090379 ms. Change these example inputs to match your task; use the method above to check each step.

Understanding your result

Acoustic travel only; equipment latency and clock drift are separate. Temperature and air conditions affect sound speed.

What to keep in mind

Acoustic travel only; equipment latency and clock drift are separate. Temperature and air conditions affect sound speed. An ideal geometric or exposure estimate. Lens behavior, stabilization, sensor crop and scene conditions may change practical results.

Common questions

How do I use this sound travel delay calculator?

Estimate audio arrival delay relative to a camera or another recording position. Enter sound travel distance in m, speed of sound in m/s, video frame rate in fps. The starting example is editable; use values for the same system or project.

Which assumptions affect this result?

Acoustic travel only; equipment latency and clock drift are separate. Temperature and air conditions affect sound speed.

Methodology maintained by ClarityKit. How these tools are built and checked.