tsepp2000@web.de writes:
> Thank you Mans,
>
> my question was a little more profound. I have linked 3 pictures that show
> the difference between three of many ways. Some filters are also used
> here. My question was about whether someone here has deeper experiences
> and has also made listening comparisons about the highest quality command
> for sox.
The thread you linked is about conversion from PCM to DSD.
> I could not attach my 3 example pictures (Spek): Every file 32 Bit Float,
> Sox-files linear phase. Here the download-link:
>
https://www.file-upload.net/download-14089057/DSF2WAV.zip.html
> The Spek-pictures:
> - Xrecode3.png output 352,8kHz File (Standard-output of XRecode3)
>
> - Sox_rate_savL88200_gain_8_lowpass_1_25000_sinc_30000_n43.png
> sox input.dsf -b 32 -e float output.wav rate -s -a -v -L 88200 gain 8
> lowpass -1 25000 sinc -30000 -n 43
That uses the rate effect, then applies some additional low-pass
filtering, presumably to remove the modulator noise.
> - Sox_rate_savL88200.png
> sox input.dsf -b 32 -e float output.wav rate -b 99 -a -v -L 88200
And that's just the rate effect without any additional filtering.
I don't quite understand what you're asking.
--
Måns Rullgård