Enter the distance and speed of sound into the calculator to determine the audio delay. This calculator can also evaluate any of the variables given the others are known.

Audio Delay Formula

The following formula is used to calculate the audio delay in milliseconds from feet.

AD = D / S

Variables:

  • AD is the audio delay in milliseconds (ms)
  • D is the distance in feet (ft)
  • S is the speed of sound in feet per millisecond (ft/ms)

To calculate the audio delay, divide the distance in feet by the speed of sound in feet per millisecond. The result will be the time it takes for the sound to travel that distance, in milliseconds. This can be used to synchronize the audio output from speakers placed at different distances from the audience.

What is Audio Delay?

Audio Delay Feet to Ms is a conversion method used in sound engineering to calculate the time it takes for sound to travel a certain distance. This is important in settings such as live concerts or theater productions where speakers are placed at different distances from the audience. The speed of sound is approximately 1 foot per millisecond, so this conversion helps sound engineers to synchronize the audio output from different speakers, ensuring that all members of the audience hear the sound at the same time, regardless of their position.

How to Calculate Audio Delay?

The following steps outline how to calculate the Audio Delay in Feet to Ms.


  1. First, determine the distance in feet (D).
  2. Next, determine the speed of sound in feet per millisecond (S).
  3. Next, gather the formula from above = AD = D / S.
  4. Finally, calculate the Audio Delay in Feet to Ms.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

distance in feet (D) = 100

speed of sound in feet per millisecond (S) = 1.1