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Rules of Thumb about Resampling

Lambda

Major Contributor
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Mar 22, 2020
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want to resample all my 96kHz songs down to 48kHz
Why would you?
Note that for real-time resampling, libsoxr may have a higher latency
than non-FFT based resamplers. For example, when using the `High Quality'
configuration to resample between 44100Hz and 48000Hz, the latency is
around 1000 output samples, i.e. roughly 20ms (though passband and FFT-
size configuration parameters may be used to reduce this figure).

so it is not ~20ms and not real time... but if you use 192k its maybe only 5ms

I don't know about this software
 

N9R

Member
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Aug 21, 2021
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Can you elaborate? Like how do you resample audio in real time with SoX?
e.g. I want to resample all my 96kHz songs down to 48kHz in real time within MusicBee (if possible).
Musicbee has this built in:

Untitled.png
 

kchap

Addicted to Fun and Learning
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Jun 10, 2021
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I've converted all my 44.1/16 files to 192/24. I was getting annoyed with with the fact the some manufacturers were not implementing the standard linear phase, sharp cutoff anti-aliasing filter. I use SoX.

I was advised to drop the gain when up-sampling to avoid inter-sample overs. I can say I learnt the hard way that it is mandatory. I always drop the gain by 3.5 dB.

I'm happy with the results. Maybe I should gone for 96K instead of 192K but I have plenty of space on my NAS.
 
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