Peak Extend (PE) is either on or off for the entire song (actually the entire album except in the case of compilations). One the other hand LLE varies throughout the song. But here's the catch -- it's useless!
2. What are all the indicators that HDCD decoding works - but I mean "works absolutely for sure" ?3. What are the indicators that HDCD decoding doesn't work ?
What will be explicit sign that HDCD decoding is not working even if this type of encoding is detected ?
If I have a 16 bit soundcard, can I use the foo_hdcd to decode to the 24bit while playing and use a VST to dither to 16 bit? With the soundcard being 16 bit I can't select 24 bit. So as the flac is playing does the foo_hdcd process to 24 bit with the peak extend, then the VST do a proper dither to 16 bit output even with the output device selected as 16 bit?
The HDCD decoder doesn't care about your sound card capabilities. It would work even if you somehow had an 8-bit sound card and dithered down to that.