Shelving Filters
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- KVRer
- Topic Starter
- 3 posts since 2 May, 2011
Hello all
Does anybody now how to create low-shelf filters in SonicBirth? Since there is no element for this, and I'm knew to SonicBirth, I'm wondering how can this be implemented.
Thanks
Does anybody now how to create low-shelf filters in SonicBirth? Since there is no element for this, and I'm knew to SonicBirth, I'm wondering how can this be implemented.
Thanks
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- KVRist
- 223 posts since 19 Apr, 2011
i haven't done this before specifically, but i would use the crossover element to split the signal into the component above the shelf and below the shelf and then you can use that to raise or lower the level of each of those as you like.
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- KVRer
- Topic Starter
- 3 posts since 2 May, 2011
Thanks for that It seems like a nice and cleaver solution.goldenhelix wrote:i haven't done this before specifically, but i would use the crossover element to split the signal into the component above the shelf and below the shelf and then you can use that to raise or lower the level of each of those as you like.
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- KVRist
- 225 posts since 11 Apr, 2007 from Montreal, Canada
Keep in mind though that since the SB crossover element is a "Linkwitz-Riley 24db/octave crossover", the outputs will have a phase difference of 360°.
http://en.wikipedia.org/wiki/Linkwitz-Riley_filter
http://www.linkwitzlab.com/filters.htm#3
http://en.wikipedia.org/wiki/Linkwitz-Riley_filter
http://www.linkwitzlab.com/filters.htm#3
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- KVRer
- Topic Starter
- 3 posts since 2 May, 2011
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Yes I will do, thanks for that. Also thanks for the cool LINKWITZLAB link, very very useful info.Kewl wrote:Keep in mind though that since the SB crossover element is a "Linkwitz-Riley 24db/octave crossover", the outputs will have a phase difference of 360°.
http://en.wikipedia.org/wiki/Linkwitz-Riley_filter (http://en.wikipedia.org/wiki/Linkwitz-Riley_filter)
http://www.linkwitzlab.com/filters.htm#3 (http://www.linkwitzlab.com/filters.htm#3)
Cheers
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- KVRist
- 239 posts since 17 Aug, 2005
This is correct, and the crossover will not make a very good sounding shelving EQ for this reason.Kewl wrote:Keep in mind though that since the SB crossover element is a "Linkwitz-Riley 24db/octave crossover", the outputs will have a phase difference of 360°.
http://en.wikipedia.org/wiki/Linkwitz-Riley_filter
http://www.linkwitzlab.com/filters.htm#3
A typical shelving EQ has a 6dB / oct slope.
I've tried a number of methods, but without recursive equations or a specific building block, I've found it impossible.
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- KVRer
- 16 posts since 4 Apr, 2010
Have you tried using this (see bottom of thread) to build the shelving filter?
http://www.kvraudio.com/forum/viewtopic.php?t=229979
http://www.kvraudio.com/forum/viewtopic.php?t=229979
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- KVRist
- 239 posts since 17 Aug, 2005
I was very active in that thread, but I never did try that out... thanks for the reminder!RogerJoensson wrote:Have you tried using this (see bottom of thread) to build the shelving filter?
http://www.kvraudio.com/forum/viewtopic.php?t=229979