Phil Leigh wrote:
> > Olav - very interesting. A couple of thoughts: > 1) I'd expect the WAV file sizes to be similar as that is a function of > the track length and bit-depth rather than musical content. I agree with you on the WAV file size, but I mentioned it as an additional indication that I'd been lucky with the recording of the output from thr NAD player. > 2) Even though dynamic expanison may not be being used on an album, it > may still be using the dynamic filter selection which is an important > part of the process. > 3) I still have my doubts that MS managed to write a software version > of the Microsonics HDCD chip... The loudest peak in the Cronotron WAV is about -1.1dB. In the EAC rip it is -0.1dB, but there is more going on here. In the EAC rip there are many peaks going over -1dB around 1:20 to 2:00 and 4:50 to 5:00. In the Cronorton WAV however we see only one single peak touching -1dB at 1:55. I believe this is "...the expansion of the instantaneous soft limiting of the signal peaks done in the encoder ..." that is described on page 17 under "Decode operations" in the AES paper Eric linked to further up in the thread. There is also a 6dB difference at the other end of the dynamic spectrum which corresponds with "..the expansion of the low level gain compression.." in the same paragraph in the AES paper. > 4) I can't hear any difference at all between 24-bit versions of tracks > captured via WAVOUT with/without HDCD. Have you listened to your two > files? I realise the 1dB level difference will make the louder one > sound better... I have listened to the files. Some of the difference is due to 1dB level difference, but the AD in the M-Audio Transit is the main problem I think. Apart from that the files sound quite similar. > Regards > Phil > > _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
