2017-12-01, 07:45 PM
Just the Die Hard LD PCM track from zoidberg's Blu Ray hardware-decoded with my Dolby SDU4.
The original decoding is to LCRS. 5.1 was derived by splitting S to SL and SR with -3 dB (Matrix multiplication with 0.707) to "create phantom center", thus keeping surround volume equal, and creating an LFE from all the channels' crossover at 200 Hz. Channels were left intact, so the original decoded channels more or less are untouched (aside from the -3dB on the surrounds).
To improve SNR, since it's an analogue process, I raised the original LD PCM track by 6 dB before sending it out into the decoder. 6dB should equal an exact doubling of the raw value, so no rounding errors should be introduced through that. Neither is clipping introduced, as the original peaks were at a felt -9dB.
File is available as 5.1 48kHz 24bit FLAC, around 3 GB. Active members of forum can PM me for mega link. Whoever has it has my permission to share, but might want to talk to zoidberg/PDB as the source was their capture.
Sadly I was unable to mux it back with the stream from zoidberg's Blu Ray. I remember some people mentioning the stream was weird. If anyone has a tip on how to do it, it'd be appreciated. Demuxing with tsMuxerGUI works, muxing with MKVToolnix weirdly glitches out. Remuxing with ffmpeg creates a weird unseekable file.
The original decoding is to LCRS. 5.1 was derived by splitting S to SL and SR with -3 dB (Matrix multiplication with 0.707) to "create phantom center", thus keeping surround volume equal, and creating an LFE from all the channels' crossover at 200 Hz. Channels were left intact, so the original decoded channels more or less are untouched (aside from the -3dB on the surrounds).
To improve SNR, since it's an analogue process, I raised the original LD PCM track by 6 dB before sending it out into the decoder. 6dB should equal an exact doubling of the raw value, so no rounding errors should be introduced through that. Neither is clipping introduced, as the original peaks were at a felt -9dB.
File is available as 5.1 48kHz 24bit FLAC, around 3 GB. Active members of forum can PM me for mega link. Whoever has it has my permission to share, but might want to talk to zoidberg/PDB as the source was their capture.
Sadly I was unable to mux it back with the stream from zoidberg's Blu Ray. I remember some people mentioning the stream was weird. If anyone has a tip on how to do it, it'd be appreciated. Demuxing with tsMuxerGUI works, muxing with MKVToolnix weirdly glitches out. Remuxing with ffmpeg creates a weird unseekable file.
Sorry for putting you on the spot like that, I wanted to delete the post but didn't know how.
