Gearslutz.com - View Single Post - What frequencies to use for ETC measurement?

gremmy · 16th March 2010

Hi guys,

I took a look at an old ETC graph for my room that involved a bass frequency sweep, from 20hz to 200hz, and it occured to me that this probably isn't the best way to measure ETC since those lower frequencies are generally very difficult to absorb at first reflections.

To measure ETC, is it more reasonable to do a sweep of 1000hz to 20000hz? My goal is to create an RFZ, and then to see if I can do some interesting things with the Haas effect. But I'm never going to absorb reflections at 30hz.

16th March 2010	#1
gremmy Gear nut Joined: Jan 2010 Posts: 107 Thread Starter	What frequencies to use for ETC measurement? Hi guys, I took a look at an old ETC graph for my room that involved a bass frequency sweep, from 20hz to 200hz, and it occured to me that this probably isn't the best way to measure ETC since those lower frequencies are generally very difficult to absorb at first reflections. To measure ETC, is it more reasonable to do a sweep of 1000hz to 20000hz? My goal is to create an RFZ, and then to see if I can do some interesting things with the Haas effect. But I'm never going to absorb reflections at 30hz.