Hi,
I'm new with REW and I got similar question about RT60 measurement.
List the equipment first:
Soundcard: Asus laptop built-in (Conexant)/
An active speaker connects to Asus laptop 3.5mm output/
Umik-1 mic connect to Asus laptop USB port
Question about RT60 measurement:
1) Do I need to calibrate umik-1 microphone before the measurement? I have my owned SPL meter, but the SPL value must include A-weighting or C-weighting or Z-weighting, can i use this meter?
2) From discussion above, it looks like I just need to start a frequency response measurement then REW will calculate RT60 for me, right? Why RT60 can be measured by this way?
3) How to calculate RT60 from T20, T30 and EDT?
Look forward to hear back, thank you.
Regards,
Louisa