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Calculators / Science / Sound travel delay
Sound travel delay calculator
Estimate one-way sound delay and round-trip echo time over a stated path.
On this page
One-way travel time0.1s
One-way delay in milliseconds100ms
Round-trip echo time0.2s
Calculator controls
How to calculate
Estimate one-way sound delay and round-trip echo time over a stated path.
One-way travel time =
d/c sOne-way delay in milliseconds =
1000*d/c msRound-trip echo time =
2*d/c sWorked example
- Sound path distance (m): 34.3
- Sound speed (m/s): 343
- One-way travel time: 0.1 s
- One-way delay in milliseconds: 100 ms
- Round-trip echo time: 0.2 s
Assumptions and limits
Speed is supplied for the medium and conditions. Wind, temperature gradients, reflections and processing latency are excluded.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Estimate one-way sound delay and round-trip echo time over a stated path. For an echo, the sound travels the distance twice. Do not double a path measurement that already includes both directions.
When this tool is useful
For an echo, the sound travels the distance twice. Do not double a path measurement that already includes both directions.
Understanding your inputs
| Input | Example |
|---|---|
Sound path distance (m) d | 34.3 |
Sound speed (m/s) c | 343 |
Frequently asked questions
What does this model leave out?
Speed is supplied for the medium and conditions. Wind, temperature gradients, reflections and processing latency are excluded.
How do I reproduce the example?
Enter the displayed example values in their labelled units. Apply the formula before rounding; change one input at a time to compare scenarios.