REW V5.17 Beta 10 smoothing bug - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

 3Likes
Reply
 
Thread Tools
post #11 of 17 Old 10-02-16, 10:17 AM Thread Starter
Elite Shackster
 
Join Date: Jan 2010
Location: GTA, Ontario
Posts: 1,369
Re: REW V5.17 Beta 10 smoothing bug

Quote:
JohnM wrote: View Post
All the measurements in that file had a frequency dependent window, to remove it use the IR Windows dialog for each measurement and de-select it. Also check that frequency dependent window is not selected in the Impulse Response window defaults in the Analysis preferences.

Thanks John! That is indeed where the smoothing was being applied.

Let me ask, Was this global ( FDW smoothing ) a choice that I made in the past ?

Or is FDW now a default choice for every newly installed program ( my cleared Preferences not-withstanding ) ?

EarlK is online now  
Sponsored Links
Advertisement
 
post #12 of 17 Old 10-02-16, 01:01 PM
REW Author
 
JohnM's Avatar
John
 
Join Date: Apr 2006
Location: UK
Posts: 6,410
Re: REW V5.17 Beta 10 smoothing bug

The default for FDW is off, so it looks like you must have selected FDW in the Analysis preferences at some point so it was applied for all new measurements from then.
JohnM is online now  
post #13 of 17 Old 10-02-16, 01:35 PM Thread Starter
Elite Shackster
 
Join Date: Jan 2010
Location: GTA, Ontario
Posts: 1,369
Re: REW V5.17 Beta 10 smoothing bug

Quote:
JohnM wrote: View Post
The default for FDW is off, so it looks like you must have selected FDW in the Analysis preferences at some point so it was applied for all new measurements from then.
Thanks for that!

So why doesn't deleting preferences & shutting down the program, then uninstalling the program & rebooting the computer ( before re-installing the program ) not give me the expected behavior ( of no FDW being applied to any newly acquired file ) ?

Or put another way, why does an older local file preference get carried forward ( after everything above is executed ) to be effectively made into a ( an unseen ) global preference ( for all new captures ) ?

Or in other words; Why doesn't the "Preferences" window ( & all choices made within it ) reign supreme ?

EarlK is online now  
post #14 of 17 Old 10-02-16, 02:49 PM
REW Author
 
JohnM's Avatar
John
 
Join Date: Apr 2006
Location: UK
Posts: 6,410
Re: REW V5.17 Beta 10 smoothing bug

Delete preferences and shut down works for me, a previous selection of applying FDW in Analysis preferences gets cleared (along with everything else being set back to defaults) and new measurements after REW is restarted don't have FDW applied. On Windows preferences are stored in the registry, delete preferences and shut down removes that registry key and all its contents. There is no other repository for the preferences.
JohnM is online now  
post #15 of 17 Old 10-03-16, 05:38 PM Thread Starter
Elite Shackster
 
Join Date: Jan 2010
Location: GTA, Ontario
Posts: 1,369
Re: REW V5.17 Beta 10 smoothing bug

Thanks John for guiding me through the wilderness on this matter ( I've sent a donation your way ).

For those of us ( in our 60's and who are more likely ) to forget where we've been within the program you might consider adding a pop-up dialogue box ( when a user is in the Smoothing Menu ) challenging that "Remove Smoothing" is impossible due to FDW being in place.
- You could always offer the user the option ( then & there ) to disable FDW before granting the request to remove all smoothing.

Additionally, when FDW is enacted ( and a user chooses 1/48 smoothing / or other ) it would be handy to actually see FDW-1/48, FDW-1/24, FDW-1/12, etc. indicated within the lower legend ( there's obviously quite a visual difference of any FDW-1/xx smoothing versus regular 1/xx smoothing ) .
- That simple indicator would have most likely prevented this thread.

Thanks Again! <> EarlK
EarlK is online now  
post #16 of 17 Old 10-03-16, 06:09 PM
REW Author
 
JohnM's Avatar
John
 
Join Date: Apr 2006
Location: UK
Posts: 6,410
Re: REW V5.17 Beta 10 smoothing bug

Although the FDW has an effect on the response that looks like smoothing, it is a form of variable windowing of the impulse response rather than a choice of smoothing - its effect is due to progressively narrowing the region of the impulse being analysed to steadily remove all but the direct response. The combination of removing the room's influence at higher frequencies (and so removing comb filtering) and the reduced frequency resolution of an ever narrower window combine to produce a response that looks smoothed, particularly at high frequencies. It doesn't really qualify as smoothing though. Having some indication when an FDW has been applied is a good idea nonetheless, I'll add that to the list and think about how it might best be done.
JohnM is online now  
post #17 of 17 Old 10-22-16, 08:28 AM Thread Starter
Elite Shackster
 
Join Date: Jan 2010
Location: GTA, Ontario
Posts: 1,369
Re: REW V5.17 Beta 10 smoothing bug

Quote:
JohnM wrote: View Post
Although the FDW has an effect on the response that looks like smoothing, it is a form of variable windowing of the impulse response rather than a choice of smoothing - its effect is due to progressively narrowing the region of the impulse being analysed to steadily remove all but the direct response. The combination of removing the room's influence at higher frequencies (and so removing comb filtering) and the reduced frequency resolution of an ever narrower window combine to produce a response that looks smoothed, particularly at high frequencies. It doesn't really qualify as smoothing though. Having some indication when an FDW has been applied is a good idea nonetheless, I'll add that to the list and think about how it might best be done.
Thanks John for adding the [ FDW ] notification in the Beta 11 release.

That is much appreciated!

EarlK is online now  
Reply

Bookmarks

Tags
10 , beta , bug , rew , smoothing , v517

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome