Which smoothing?

dcashel

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Yamaha RTX-V2700
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NHT Super One
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SVS SB-16 Ultra
Which smoothing in REW is recommended when looking at frequencies below 100Hz and above 100Hz?
 

Wayne A. Pflughaupt

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Yamaha CX-A5000 A/V Preamp / Processor
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Yamaha RX-Z9 AV Receiver (as multichannel amp)
Universal / Blu-ray / CD Player
Denon DCT-3313 UDCI Universal Disc Player
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Canton Karat 920
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Realistic Minimus 7 (front EFX speakers)
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Canton Plus D
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Yamaha YDP2006 Digital Parametric EQ (front mains)
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Yamaha YDP2006 Digital Parametric EQ (surrounds)
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I like 1/3-octave smoothing above 100 Hz because it generates a graph that looks like what you actually hear. Finer-resolution smoothing, especially beyond 1/6-octave, gets scary-looking graphs that compel people to go overboard with the equalizing, chasing every little ripple in response. Below 100 Hz no smoothing is best. You can utilize REW’s variable smoothing feature to get both in a single graph.

Regards,
Wayne
 

Harrycr

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I like 1/3-octave smoothing above 100 Hz because it generates a graph that looks like what you actually hear. Finer-resolution smoothing, especially beyond 1/6-octave, gets scary-looking graphs that compel people to go overboard with the equalizing, chasing every little ripple in response. Below 100 Hz no smoothing is best. You can utilize REW’s variable smoothing feature to get both in a single graph.

Regards,
Wayne
What frequency range do you EQ?

Are you still using the Z9
 

Wayne A. Pflughaupt

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Staff member
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May 21, 2017
Messages
637
Location
Corpus Christi, TX
More  
Preamp, Processor or Receiver
Yamaha CX-A5000 A/V Preamp / Processor
Main Amp
Yamaha RX-Z9 AV Receiver (as multichannel amp)
Universal / Blu-ray / CD Player
Denon DCT-3313 UDCI Universal Disc Player
Front Speakers
Canton Karat 920
Center Channel Speaker
Canton Karat 920
Front Wide Speakers
Realistic Minimus 7 (front EFX speakers)
Surround Speakers
Canton Plus D
Surround Back Speakers
Yamaha YDP2006 Digital Parametric EQ (front mains)
Front Height Speakers
Yamaha YDP2006 Digital Parametric EQ (surrounds)
Rear Height Speakers
Yamaha YDP2006 Digital Parametric EQ (sub)
Subwoofers
Hsu ULS-15 MKII
Other Speakers or Equipment
Adcom ACE-515 (for power management)
Video Display Device
Yamaha DT-2 (digital clock display)
Screen
Pioneer PDP-6010FD 60" Plasma TV
Remote Control
Stock Yamaha Remote
Streaming Equipment
Roku Express
Other Equipment
Audio Control R130 Real Time Analyzer
I’ve typically EQ’d full range, but at this time have none on my current speakers (although they could us a bit in the 4-6K range). Center speaker is mainly EQ’d to address program material shortcomings.

Still using the Z9, but as an outboard multichannel amplifier. Currently using the Z7 as front end.

Regards,
Wayne
 

teyhyrh4r

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I look at the envelope of the unmoothed graph. we don't hear like any smoothing since our ears filter dips out, while any smoothing treats dips and peaks the same; creating an average
 

teyhyrh4r

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Aug 7, 2019
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No, smoothing is applied to squared magnitudes so peaks have a greater influence than dips.

ok, but if any smoothing existed that shows what we hear (in-room at least, the smoothings were created for loudspeaker meassuring) it would be flat for a neutral response.
in fact if I eq a var smoothed graph of my LP with a rather unfamous target found in a book of Dr Tool

a.jpg


it aprouches a flat envelope on the unsmoothed graph

b.jpg


I think house curves are just adoptions to the distorsions the smoothed graphs produce, and we should use unsmoothed graphs
 

sm52

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Mar 14, 2019
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892
If you use the minimum smoothing 1/48, then such a graph is already readable and is as similar as possible to an unsmoothed one, including the phase graph. Greater smoothing, 1/24 gives better readability, but the phase graph is already far from the original. And an unsmoothed graph is very difficult to read.
 
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