# How does FMOD measure velocity? -\> Built in speed parameter

**URL:** <https://qa.fmod.com/t/how-does-fmod-measure-velocity-built-in-speed-parameter/19195>\
**Category:** FMOD Studio\
**Created:** [August 28, 2022, 12:19am UTC](https://qa.fmod.com/t/how-does-fmod-measure-velocity-built-in-speed-parameter/19195 "2022-08-28T00:19:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![fractanimal](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/fractanimal/32/3897_2.png) [@fractanimal](https://qa.fmod.com/u/fractanimal)\
**Post date:** [August 28, 2022, 12:19am UTC](https://qa.fmod.com/t/how-does-fmod-measure-velocity-built-in-speed-parameter/19195/1 "2022-08-28T00:19:36Z")

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I’m assigning the built in (absolute) speed parameter to control the amount of wind you hear as a car speeds up.

I’m just curious how FMOD measures velocity, and in what Units.

While I’m here does anyone also know how Unity measures velocity?

Thanks!

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**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\
**Post date:** [August 31, 2022, 3:59am UTC](https://qa.fmod.com/t/how-does-fmod-measure-velocity-built-in-speed-parameter/19195/2 "2022-08-31T03:59:55Z")

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Hi,

An explanation of how we measure velocity in terms of the Speed parameter can be found under [FMOD Studio | Parameter Reference](https://fmod.com/docs/2.02/studio/parameters-reference.html).

Hope this helps!

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<div class="post-metadata">

**Author:** ![fractanimal](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/fractanimal/32/3897_2.png) [@fractanimal](https://qa.fmod.com/u/fractanimal)\
**Post date:** [September 1, 2022, 10:17pm UTC](https://qa.fmod.com/t/how-does-fmod-measure-velocity-built-in-speed-parameter/19195/3 "2022-09-01T22:17:29Z")

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Perfect, thank you