http://rarewares.hydrogenaudio.org/others.html "LPCM 24bit processor" works to convert 24/96 DVD-V audio to .wav. I don't know about 20/48. Reading the helpfile of lpcm24 is a good idea anyway.
I tried a lot of audio editing/conversion software last days, but I still didn't find the software which can read the 48 kHz, 20 bits LPCM files.
The most of the software which can read LPCM files, gives just a 16 or 24 bits option, not 20 bits.
I don't know in how far the 20 bits are standard, anyway also my software DVD player, PowerDVD, can?t read the LPCM track, my hardware player, Pioneer 350, can.
The workaround for me on this moment is the following:
I use DVD Decrypter and rip not just the audio, but the LPCM audio with the video as a VOB file. I found the program MPEG Mediator, http://www.mpeg-mediator.com, which can extract the audio from a VOB file as a WAV file.
The weird thing is that MPEG Mediator recognizes the VOB file as a file with 16 bits audio and also the extracted WAV file is a 48 kHz, 16 bits WAV file.
