What is an Allpass filter?
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@lislegaard @counivers it is a bit of an oversimplification but by the time you finish explaining Laplace/Z transforms to someone who is 5 they might be at least 6 or 7 already
haha!
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@lislegaard @counivers it is a bit of an oversimplification but by the time you finish explaining Laplace/Z transforms to someone who is 5 they might be at least 6 or 7 already
@ahihi gotta learn 'em up early!
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@ahihi gotta learn 'em up early!
@wordsmith @lislegaard @counivers their elementary school classmates are in for a rough time
- alright class, today we are learning about addition!
- of complex numbers? or maybe orthonormal sinusoids? -
@wordsmith @lislegaard @counivers their elementary school classmates are in for a rough time
- alright class, today we are learning about addition!
- of complex numbers? or maybe orthonormal sinusoids?@ahihi @wordsmith @lislegaard Wanna use some Allpass filters just to be original! The other filters are sellout!
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@ahihi @wordsmith @lislegaard Wanna use some Allpass filters just to be original! The other filters are sellout!
@ahihi @wordsmith @lislegaard Reason I remembered them is that they are often used in reverbs! And I came across this freebie from the OG Robert Henke https://www.roberthenke.com/technology/lanzaroteVerb.html
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that is the best explanation i have seen so far!
Indeed a good simple explanation.
For 6 year old folks: Every EQ introduces a frequency-dependend phase shift on the frequencies it is operating on. An allpass filter does so without attentuating or lowering the frequency in question.
The human ear is unable to detect this phase shift, yet in some cases it can have an effect.
This does not happen with FFIR filters, but these introduce a general delay on the entire signal.
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Indeed a good simple explanation.
For 6 year old folks: Every EQ introduces a frequency-dependend phase shift on the frequencies it is operating on. An allpass filter does so without attentuating or lowering the frequency in question.
The human ear is unable to detect this phase shift, yet in some cases it can have an effect.
This does not happen with FFIR filters, but these introduce a general delay on the entire signal.
@nielso @lislegaard @counivers the phase shift does eventually get noticeable when you stack multiple of them. and then you have a fun smearing effect like Diopser / Disperser
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@nielso @lislegaard @counivers the phase shift does eventually get noticeable when you stack multiple of them. and then you have a fun smearing effect like Diopser / Disperser
@ahihi @nielso @lislegaard Is there a good/simple one that works well on Ableton/M4L or VST?
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@ahihi @nielso @lislegaard Is there a good/simple one that works well on Ableton/M4L or VST?
@counivers @nielso @lislegaard if you mean a single allpass filter, i believe there is one in Max. if you mean the smear effect, Diopser is available as VST3 and CLAP. the builds are a bit tricky to find but it looks like latest ones are here https://github.com/robbert-vdh/nih-plug/actions/runs/21066550536
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@counivers @nielso @lislegaard if you mean a single allpass filter, i believe there is one in Max. if you mean the smear effect, Diopser is available as VST3 and CLAP. the builds are a bit tricky to find but it looks like latest ones are here https://github.com/robbert-vdh/nih-plug/actions/runs/21066550536
@ahihi @nielso @lislegaard Thanks! I already had the diopser
Will check that out thanks! -
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