REW Beta Release Fly Time misurement

[Cippino]

good morning,
does anyone know how i measure the signal flight time in REW beta 61?
thank you

 

[John Mulcahy]

If you measure with a timing reference REW will show the delay relative to the reference.

 

[Cippino]

thanks for the answer but I wanted to know if I can have a value in terms of time or distance between the speaker and the microphone or how much time passes from when the signal starts to when it arrives. what I always hear called flight time

 

[John Mulcahy]

If you only want to know how long sound takes to get from speaker to microphone use a tape measure to measure the distance and divide by the speed of sound, which is about 343 m/s in dry air at 20 C.

If you make a measurement with a loopback timing reference you will get the time taken from the signal leaving the interface to arriving back at the interface, assuming your mic is connected to the same interface. That may be longer then the time taken for the sound to travel from speaker to mic depending on what processing delays there are in the replay path.