Problem with big rooms and long reverberation (>6s) - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #1 of 6 Old 10-23-17, 05:14 PM Thread Starter
Shackster
 
Join Date: Mar 2013
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Problem with big rooms and long reverberation (>6s)

Hi,

I try to measure for the first time a big room with more than 6s of reverberation. It looks like REW can't handle this but maybe I miss something ... If listen to the IR wav file, I can hear a filter cutting the diffuse field ! Also the measurement with a sweep stop before the end of the reverbaration. Is there a limitation of time in the software ?

All the best,

Olivier
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post #2 of 6 Old 10-24-17, 02:25 PM
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John
 
Join Date: Apr 2006
Location: UK
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Re: Problem with big rooms and long reverberation (>6s)

To capture impulses with very long reverberation times use a long sweep (e.g. 1M) and make sure the Analysis preference for IR truncation is set to "Keep full IR".
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post #3 of 6 Old 10-24-17, 05:30 PM Thread Starter
Shackster
 
Join Date: Mar 2013
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Re: Problem with big rooms and long reverberation (>6s)

Dear JohnM, thank you for your reply ! Unfortunately I've already tried this but I have the same problem. I will give a shot with another the version 5.18 (?). Mine was in v5.14...
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post #4 of 6 Old 10-27-17, 03:05 PM Thread Starter
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Re: Problem with big rooms and long reverberation (>6s)

Ok it seems to work perfectly well with the v18 ! I still have a question about the spectrogram, it seems to be limited to 2000ms ...
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post #5 of 6 Old 10-27-17, 03:09 PM Thread Starter
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Re: Problem with big rooms and long reverberation (>6s)

..
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post #6 of 6 Old 10-27-17, 03:13 PM
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Re: Problem with big rooms and long reverberation (>6s)

Try the beta version, it has much wider limits.
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