Strange waterfall

**jpo** · **10-22-09, 10:54 AM**

Hello,
what's wrong with my faterfall graph?
Same db-reading at first 150ms...
Thanks
Juho

**brucek** · **10-22-09, 11:53 AM**

You have altered the waterfall window from its default setting. It looks like you're using a Tukey 0.25 for the Spectral decay Left Window. The Spectral Decay is the window used when a waterfall is generated. The left should be a Hanning Window and the Right should be a Tukey 0.25 window. Once changed, regenerate the waterfall.

If you want to return REW to all its default settings, execute a Delete Settings and Shutdown in the Settings pull down.

When you post a waterfall of a sub, please use the same axis as use when you post a response graph. Use the standard Vertical graph axis of (45dB - 105dB) and the Horizontal graph axis of (15Hz - 200Hz) using the Graph Limits button in the top right corner of REW.

brucek

**jpo** · **10-22-09, 12:06 PM**

Thanks Bruceck,
This looks much better now.
Juho

**brucek** · **10-22-09, 12:25 PM**

Yep.....

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