 Spectrum/RTA feature
Hi everyone!
First let me say that the new REW 4.10 is really quite amazing....Thank you John!!!
The RTA/Spectrum tab is very, very cool.
I have to admit though that I'm a big novice at this stuff so I was wondering a few things as I was trying the new Spectrum Tab features..
- What is the difference between RTA and Spectrum Analysis? In a sense, the graphs are similar yet different. I guess more to the point is, what uses would RTA have over spectrum analysis and vise versa?
- I noticed that when using the DB Y axis, my RTA and spectrum graphs are 20+ DB below the 75db reference when sending noise from the Generator, even though the SPL Meter reads 75 DB. Is this normal? When I take a standard measurement, it is graphed correctly. Here's a snapshot below with the two on the same graph.
The caption of the RTA reads:
"65536-point 1/48 octave RTA using Blackman-Harris 7 window and exponential averaging
Input RMS 94.3dB"
Thats all for now I guess. I'm sure I'll have more questions as I play with it a little more...
Thanks again for a really cool new version of REW!!!
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