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Topic: foo_dsp_lowpass (discussion) (Read 2705 times) previous topic - next topic - Topic derived from foo_dsp_lowpass plugin
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foo_dsp_lowpass (discussion)

Quote from: lvqcl on
Lowpass filter.
Can be used before lossy encoding, if your encoder of choice doesn't have lowpass filter with arbitrary frequency.
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This is what I was looking for. Many thanks
🇺🇦 Glory to Ukraine!

Re: foo_dsp_lowpass (discussion)

Reply #1 –
Can u PLEASE implement a -24dB Subsonic Filter (HighPass) too?! I would be VERY pleased, cause thats what i miss "right from beginning"

Re: foo_dsp_lowpass (discussion)

Reply #2 –
Quote from: klez on
Can u PLEASE implement a -24dB Subsonic Filter (HighPass) too?! I would be VERY pleased, cause thats what i miss "right from beginning"


This lowpass filter is just a part of SoX resampler. This plugin is just truncated resampler plugin.
I don't know how to properly implement subsonic highpass filter.

Re: foo_dsp_lowpass (discussion)

Reply #3 –
So far this has been a sort of week-end fun-time a plugin in for me. I load my playlist with sufficiently percussive material, then I set freq to 3500 and width to 1%. The chirpy ringing is really amusing. From here on tweaking phase lets you hear the difference between pre-ringing and post-ringing very clearly.

I suppose the default width of 5% is reasonable when used prior to lossy encoding?

Re: foo_dsp_lowpass (discussion)

Reply #4 –
Plugin messes up channel mask for non-standard channels layouts. For example 5.0 becomes 4.1 when passing through plugin.

Re: foo_dsp_lowpass (discussion)

Reply #5 –
lvqcl
foobar2000 1.5.4, foo_dsp_lowpass.dll 0.0.4
“default” button inside plugin’s settings does not reset settings
• Join our efforts to make Helix MP3 encoder great again
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• Let's pray that D. Bryant improve WavPack hybrid, C. Helmrich update FSLAC, M. van Beurden teach FLAC to handle non-audio data

Re: foo_dsp_lowpass (discussion)

Reply #6 –
@lvqcl, could you update foo_dsp_lowpass to x64, please?
• Join our efforts to make Helix MP3 encoder great again
• Opus complexity & qAAC dependence on Apple is an aberration from Vorbis & Musepack breakthroughs
• Let's pray that D. Bryant improve WavPack hybrid, C. Helmrich update FSLAC, M. van Beurden teach FLAC to handle non-audio data

Re: foo_dsp_lowpass (discussion)

Reply #8 –
@Case: Is it possible to implement a max. lowpass of e.g. 96kHz?

Re: foo_dsp_lowpass (discussion)

Reply #9 –
Yes, I wish it wasn't limited to 25k, what if we alter audio material way beyond? I wanted to have a cutoff point at some point 30k..., but then I left it to the resampler by creating 64khz files. Bigger cutoff possibility would add flexibility.

Re: foo_dsp_lowpass (discussion)

Reply #10 –
I had missed the request to increase the lowpass limit. I uploaded a modification where the limit is now raised to 96 kHz.
The new version can be found at https://foobar.hyv.fi/?view=foo_dsp_lowpass.

Re: foo_dsp_lowpass (discussion)

Reply #11 –
Quote from: Case on
I had missed the request to increase the lowpass limit. I uploaded a modification where the limit is now raised to 96 kHz.
The new version can be found at https://foobar.hyv.fi/?view=foo_dsp_lowpass.
That's awesome. It works. Could you also extend the width? If it makes sense. On a 96k file, I maxed it out to 20% with a cutoff point at 25k. You see in the screenshot, it is still rather a narrow transition.

X

Re: foo_dsp_lowpass (discussion)

Reply #12 –
I increased the maximum width to 100%.

Re: foo_dsp_lowpass (discussion)

Reply #13 –
Cool, thank you very much!