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Originally Posted by DanDan  From the one post I note the measuring tape calculator again. So once again we use organic methods to identify a certainly destructive reflection, then use ETC to view it amidst a forest of pampas grass? I have repeatedly asked why one would do this. What is the advantage of the ETC. What can be seen through this lens that the simpler views don't have. |
The thing is, without the ETC you won't know that you have a harmful
reflection, or at least you can't say exactly when it's happening unless you
have ears calibrated in milliseconds. Once you see it on the graph and
figure the distance the reflection traveled, you can go about figuring out
which path it took and then treat it. The ETC is then used again to see
the improvement. Repeat until everything within the first 20ms is 10-20db
down.
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In the typical small rooms which this forum deals with, pretty much all reflections are typically under 20mS. Unless you have over a 16 foot ceiling for instance. So, the reflective surfaces certain to do damage are close at hand, literally in many case, and all entirely visible to the eye.
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In general I agree with this but as G.E. has shown, some reflections are
a bit less obvious. He has one that effectively goes around his side and
ceiling aborbers.
Paul P