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Multi-Way Conventional loudspeakers with crossovers

rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
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Old 6th September 2017, 06:16 PM   #2161
mark100 is offline mark100  United States
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Originally Posted by fluid View Post
Have you tried cascading another filter at the same frequency in the OpenDRC to get a higher slope. IIR slope plus filter linearization to keep the latency down. LR4 from the Linea and LR4 from the open DRC should get you LR8 overall.
Yes, thanks. Tugging and pulling at lot's of combos
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Old 6th September 2017, 06:46 PM   #2162
GDO is offline GDO
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Originally Posted by BYRTT View Post
Right if its science for our hearing but that front also moves from time to time, regarding real world wave shapes i can do my own science and see output verse input is hopeless distorted no matter what we hear .

Wave shape output 50Hz SQ wave from a DC - light-speed domain:
Click the image to open in full size.


Wave shape output 50Hz SQ wave from summed DC - 500Hz pass-band with a 2nd order LR XO point then 500Hz - light-speed pass.band:
Click the image to open in full size.



Wave shape output 50Hz SQ wave from a 20-20kHz domain:
Click the image to open in full size.


Wave shape output 50Hz SQ wave from summed 20 - 500Hz pass-band with a 2nd order LR XO point then 500Hz - 20kHz pass-band:
Click the image to open in full size.
Oh nooo, not the squared (head...) wave test agaiiin...
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Old 7th September 2017, 11:53 PM   #2163
mark100 is offline mark100  United States
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Originally Posted by GDO View Post
Oh nooo, not the squared (head...) wave test agaiiin...
In all my experience, science and listening agree.......
perfect magnitude response,
perfect phase response,
perfect impulse response,....
perfect square wave response......

get any ONE of them right, and ALL the others are right too.

It is truly glorious, how getting any one of them right,.... sounds
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Old 8th September 2017, 01:55 AM   #2164
Jim the Oldbie is offline Jim the Oldbie  United States
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Smooth magnitude response FTW (as the kids say)!! Enjoying some right now. Even more fun if it magnitudes right down to 16 Hz, wheee!

Jim
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Old 8th September 2017, 06:44 AM   #2165
silverprout is offline silverprout  France
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Originally Posted by mark100 View Post
perfect magnitude response
It is utterly funny to see the propagation of the generalisation of this kind of idea.

I rarely see CSD graphs... some people seems to have equalized perfectly their loudspeakers system but the CSD shows that their hear more resonances than audio signal.
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Old 8th September 2017, 09:24 AM   #2166
torgeirs is offline torgeirs  Norway
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"mark100:The windowing also alters the steepness of the filter vs number of taps: Think I found lanscoz window (sorry for missspelling) had the highest oct/db vs taps. There may be "better" windows out there or in RePhase?
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Old 8th September 2017, 10:11 AM   #2167
BYRTT is offline BYRTT  Denmark
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rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
Quote:
Originally Posted by silverprout View Post
It is utterly funny to see the propagation of the generalisation of this kind of idea.

I rarely see CSD graphs... some people seems to have equalized perfectly their loudspeakers system but the CSD shows that their hear more resonances than audio signal.
Think can follow what you mean but can also follow what mark100 mean and actual pages back he shared nice CSDs, don't know if its rarely but up front below two-wayer correction clean up CSD.
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Old 8th September 2017, 12:37 PM   #2168
mark100 is offline mark100  United States
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Quote:
Originally Posted by silverprout View Post
It is utterly funny to see the propagation of the generalisation of this kind of idea.

I rarely see CSD graphs... some people seems to have equalized perfectly their loudspeakers system but the CSD shows that their hear more resonances than audio signal.
Hi, what does CSD stand for ?

Fwiw, I meant perfect responses in anechoic type environment. ..
I tune my speakers outdoors for closest substitute.

I've found that magnitude, phase, impluse, and yes ..I've even looked at square wave response...........I've found they all move together...fix one, and others get fixed...that's my real point here ....

But more importantly, sound improves. Hardest test of all imo, is off axis square wave response
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Old 8th September 2017, 12:47 PM   #2169
pos is offline pos  Europe
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Quote:
Originally Posted by mark100 View Post
I've found they all move together...fix one, and others get fixed...
Agreed, resonances will show as decays on a CSD, and as a bumps or dips in the magnitude response.
This is just a matter of using the correct visualization for what you want to show (or hide ).
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Old 8th September 2017, 01:05 PM   #2170
silverprout is offline silverprout  France
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Quote:
Originally Posted by mark100 View Post
Hi, what does CSD stand for ?
Fwiw, I meant perfect responses in anechoic type environment. ..
I tune my speakers outdoors for closest substitute.
I've found that magnitude, phase, impluse, and yes ..I've even looked at square wave response...........I've found they all move together...fix one, and others get fixed...that's my real point here ....
But more importantly, sound improves. Hardest test of all imo, is off axis square wave response
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Originally Posted by pos View Post
Agreed, resonances will show as decays on a CSD, and as a bumps or dips in the magnitude response.
This is just a matter of using the correct visualization for what you want to show (or hide ).
You can't fix resonances, the only cure is to d'ont trigger them.
When i tune my multi-sub configuration, i use pure tones and band passed white noise... a 50Hz pure tone can give a flat FR response at 0dB from 20 to 200Hz.
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