Seeking Understanding: Artifact Analysis in Multiband Distortion
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@Mighty23 tried the snippet, I don't see any artefacts here, even with the same settings
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@DanH Thank you very much for your response. I'd like to ask if you've used a samplerate different from 48000 and a buffer size of 480.
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Sub frequency artifacts (most likely "pre-ringing") can be a result of linear phase filtering.
Dan Korneff - Producer / Mixer / Audio Nerd
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@Dan-Korneff What should I try to prevent or correct this?
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@Mighty23 said in Seeking Understanding: Artifact Analysis in Multiband Distortion:
@Dan-Korneff What should I try to prevent or correct this?
use a high pass filter set at 20Hz
HISE Development for hire.
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@Dan-Korneff Isn't pre-ringing a result of audio playing backwards?
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@Lindon Do you mean a low pass filter, as in preventing aliasing?
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@clevername27 Not that I know of. Playing the audio backwards is actually a possible solution to the issue.
In general, all EQ creates ringing. It usually occurs AFTER the signal, so it's masked most of the time. Linear phase filters create a ripple in the audio at the crossover points (aka: ringing) Due to the latency caused by linear phase filters, some of this ringing occurs before the transient and is now audible. -
@clevername27 said in Seeking Understanding: Artifact Analysis in Multiband Distortion:
@Lindon Do you mean a low pass filter, as in preventing aliasing?
no - several types of distortion approaches produce harmonics - in fact in a lot of cases this is what you want - but these can appear above your source freq. and below it, looking at the op's image there seems to be a low freq harmonic being added at around 20Hz, its a pretty simple High-pass filter to remove this.
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@Lindon said in Seeking Understanding: Artifact Analysis in Multiband Distortion:
ooking at the op's image there seems to be a low freq harmonic being added at around 20Hz
Does this undesirable occurrence associated with distortion have a specific term?
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