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Old 08-26-2005, 09:50 AM
Chris Cavell Chris Cavell is offline
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Join Date: Mar 2003
Location: Louisiana, USA
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Default Re: feet to millisecond conversion?

Cliffy Nailed it...that's the general approximation.

Most studios keep the place at 74 degrees Fahrenheit...which makes the speed of sound 1133.9676290463692 ft/sec. So the approximation is a little bit off, and that can pose some small issues when you're dealing with large distances.

An easy way to improve the accuracy of that approximation is to add one extra millisecond for every 8 feet, and if it's a really big distance, another millisecond or two on top of that after you add it all up. (Can be helpful with orchestral recording in a large venue and getting the room mics to sound right...you'd need to nudge the room mics earlier in time to make it sound right if aiming for an accurate representation of what it would sound like if seated in the theater.)
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