Originally Posted by audioguy
Originally Posted by djbluemax1
All the little settings in Windows (and the various different versions of Windows that different users may be on) that need to be correctly set for everything to work together. No sound from HDMI? Did you set your soundcard's outputs correctly? My laptop doesn't automatically output sound through the HDMI connection, only video. I have to go into the configuration to change that manually. Once I know how and where to do that, it's quick and simple, but until and unless I know that, it can be a PITA. Did I configure the input channel settings in Windows correctly for REW? (this was my first PITA when trying to hook up my external soundcard. Took a while for me to figure that one out).
And where does one go to learn EXACTLY where to look, what to change, what to not change? That is one of the many
frustrations I am having
Therein is the major problem with REW, AFAIK, there really isn't one place where you can go to find ALL the correct settings and parameters to set before beginning. The REW Help file will help set the basics for REW, but there are too many possible equipment configurations for Windows computers. Different systems may (and do) need slightly different settings.
HTS can be a LOT of help as those folks have lots of experience with using and configuring REW setups, but even there, with my particular setup (Windows 7 PC to Roland Quad Capture external soundcard to calibrated EMM-6 mic), I eventually had to figure it out myself by going into every menu (Windows and REW) before I could figure out what had to be set in what manner for everything to work properly.
Originally Posted by kbarnes701
Originally Posted by AustinJerry
I think we should agree in this thread on certain standards for the graphs we publish. My recommendations:
- Use 1/24 smooting for full-range graphs, and no smooting
for graphs that focus on bass frequencies, say below 300Hz.
- Adjust vertical axis resolution so that the scale shows in 5 dB increments (I believe Jason made the same recommendation).
- Always include a full-range graph (20-20,000 Hz), as well as a graph that focuses on a problem range (e.g. bass frequencies 20-300 Hz).
Having said that, would you care to re-publish your averaged graph with 1/24 smoothing, rather than 1/3 smoothing?
I agree. This ought to be in one of the first posts in the thread if we are going to remember to do it and what it stipulates. HST, I always do 1/24th anyway, but I also often make a 1/6th as I understand that it can give us a better idea of what our ears actually hear. 1/24th tells us better what is going on, 1/6th tells us better what it might sound like. Please correct me if I am wrong.
EDIT: looking at your two graphs Jerry - the 10db peak to peak difference between 970Hz and just over 1kHz all but disappears on the 1/3 smoothed graph - as it is quite deep but also very narrow, does this not correspond more to what we hear? IOW, we could obsess over that small frequency band as shown in the 1/24th graph and spend a lot of time trying to smooth it, but a quick glance at the 1/3 (or pref 1/6th) smoothed graph would show us that is probably inaudible anyway? Have I got this right or am I way off?
The higher up the FR range we go, the less audible any dips etc. over narrow frequencies are, but a huge dip around the 970-1kHz region will be audible. Our ears are extremely sensitive to that region.
I know that figuring REW out is already going to be time consuming, but if anyone is interested in how the results of measuring and correcting FR anomalies affects the audible outcome, I highly recommend downloading and trying the Harman How-To-Listen program.
*** edited to add *** I went back to look at the specific graph you were referring to and you're actually right, the 10db difference over that small range would be very difficult to hear for most listeners (who aren't Tom Holman).
MaxEdited by djbluemax1 - 1/11/13 at 1:50am