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CD Hardware/Software / Re: Another HDCD thread...
Last post by danadam -Unlike SoX, I don't think ffmpeg has any options to control dither for audio.
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... -af aresample=dither_method=triangular out.wavAlthough this seems to only add noise at appropriate level but doesn't zero the lower bits in the last two cases. And I don't know why "output_sample_bits" works only with "osf=s32".
... -af aresample=dither_method=triangular:dither_scale=8 out.wav
... -af aresample=dither_method=triangular:output_sample_bits=12:osf=s32 out.wav
With the demise of this player, I now regret owning a few RR HDCDs that I knowingly purchased. I now see HDCD as one of those "just because you can doesn't mean you should" sort of things. All that's left is to deal with its sorry legacy (hdcd.exe anyone?).Are you saying that there are some alternative versions that don't use HDCD or that the music on those discs is not worth the hassle? :-)
These are the commands I used to make the separate waveforms.The hdcd filter also has the "analyze_mode" option, which helps to visualize where the PE or LLE happen (see https://wiki.hydrogenaud.io/index.php?title=High_Definition_Compatible_Digital#Analyze_mode).
Original Audio - No alterations.
Audio after decoding with HDCD filter
Here's a screenshot of the two waveforms in Audacity