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Topic: Resampler plugin (Read 480910 times) previous topic - next topic
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Re: Resampler plugin

Reply #575
Would you please add one more configuration setting, which do upsample 4x for [0, 48]kHz and 2x for (48, 96]kHz source.

Thanks.

You can do this with SoX_resampler_mod.

Just add 2 resamplers to DSP chain. First makes 4x upsampling and passes 64000,88200,96000 unmodified. Second makes 2x upsampling and passes 128000,176400,192000 unmodified.

Wouldn't it be simpler do resample 44100,48000,64000,88200,96000,128000,176400,192000 to "UP to 352k/384k"?
And if I want it in two steps I would put
1st 44100,48000,64000,88200,96000,128000 to "UP to 176k/192k"
2nd 176400,192000 to "UP to 352k/384k"

What is the benefit of going into the up-sampling in two steps and not straight forward?
I am still playing with this plugin as I am not 100% sure I can hear any difference in audio so may it all be just placebo. :-)

Re: Resampler plugin

Reply #576
Do I understand correctly that in the case of SoX, the following settings are optimal for downsampling?

• We can do better about lossy music: Opus complexity & qAAC dependence on Apple is a departure from Vorbis & Musepack breakthroughs
• Clipping-free MP3 encoding for vintage gear: SoX to 44.1 kHz → LoudMax -1 dB ISP → ADClip8 → Smart dither 16 bit → Lame3995o -Q1
• Plz, update WavPack hybrid & FSLAC

 

Re: Resampler plugin

Reply #577
@seventhstart, I use the settings you mentioned.

Of course, I'd like to better understand things like
a) minimum vs linear phase in the resampler and
b) TPDF with highpass vs noise-shaped dithering.

The knowledge about sound that travels from article to article is often a set of slang words like a ringing artifact — a rare expert tries to build a bridge to the common people with the help of vernacular language and clearer metaphors (think Carl Sagan, a popularizer of astronomy).

But no doubt, our current conversion setup produces good results.

• We can do better about lossy music: Opus complexity & qAAC dependence on Apple is a departure from Vorbis & Musepack breakthroughs
• Clipping-free MP3 encoding for vintage gear: SoX to 44.1 kHz → LoudMax -1 dB ISP → ADClip8 → Smart dither 16 bit → Lame3995o -Q1
• Plz, update WavPack hybrid & FSLAC