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Question about filters
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Better to filter separate or together?
Separate
100%
 100%  [ 3 ]
Together
0%
 0%  [ 0 ]
More details needed..
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 0%  [ 0 ]
Total Votes : 3

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Volter



Joined: Aug 09, 2018
Posts: 1
Location: UK

PostPosted: Thu Aug 09, 2018 11:45 am    Post subject: Question about filters
Subject description: Are there benefits to filtering before or after mixing voices?
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Hello!

First post, hopefully one of many. Very Happy

I have been working on a poly synth design that I plan to build soon, I am wanting to have 6 voices, and was wondering if there are any benefits to filtering each voice separately before mixing them? vs mixing and then using a single filter.

Thanks for your time.

-Volt
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JovianPyx



Joined: Nov 20, 2007
Posts: 1630
Location: West Red Spot, Jupiter
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PostPosted: Thu Aug 09, 2018 3:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

Separate if modulation is done to each voice separately, like using an envelope to modulate filter frequency. Then as each voice is activated, the filter's envelope starts at the start of each note and the character of the filter is applied to each note. If this is attempted with a single filter (as in a paraphonic synth) the effect is very different.

If the filter is meant to modify the collection of all voices, then a singular filter is all that is needed, but I don't see how this can adequately include modulation.

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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Tue Aug 14, 2018 11:34 am    Post subject: Reply with quote  Mark this post and the followings unread

If you really want to go down the DIY polyphonic path I'd suggest seperate filters. With seperate filters you can still
simulate the same result as a having a single filter (or use only 1 of them) but it's often a nicer result to have a filter
for each voice. This does mean that you would also need seperate envelope generators to control each filter so make
sure you know what you will be getiing into.

oh and
welcome party!

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