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Is Windows Media Lossless Lossless???

Like many of you out there I've been building my own music server on PC, with the goal of remote controlling it over wireless home network by Pocket PC. IMHO the servers available commrcially right now are either way too expensive, don't support uncompressed, or require you to use a TV to view your entire library in any useful, sortable fashion unless you add an even more expensive control system like Crestron. I don't know about you but I don't want the TV or computer monitor on when it's music time, and I don't want a hardwired touch screen on my coffee table, so for now it's Pocket PC for me.

OK, starting with a spanking new 300 Gig drive, my CD Favorites library was first copied in as WAV's. Then I discovered WAV's don't support tagging, at least not in a uniform standard (the jukeboxes I'm trying to remote control with pocket PC, either J. River, Windows Media or WInAmp, don't recognize MusicMatch WAV tags). This means, to the jukeboxes I can control with PocketPC, my WAV libray is 2000 INDIVIDUAL SONGS, not groupable by artist or album, which means the list is HUGE.

So, I put everything in again as Window Media Lossless, which has built-in tags and sorts by album, artist, even has album cover info embedded. J. River Media Center reads the tags, so does WMP 9 or 10, so does MusicMatch. Everything shows up and works on a Pocket PC running NetRemote running J. River. Very elegant GUI. 80 Gigs becmae 40 Gigs. Great, right? EXCEPT I can hear the difference between WMA Lossless and WAV or the original CD!!! Think I'm nuts? Here's what I hear, tell me if you agree:

-Compressed dynamics.
-Softened transients.
-Big nasty screeches from either physical disc read errors or when I had my PC doing something else intesive while ripping. The same song ripped to WAV has no screech!
-Pops at beginnning of albums or individual songs
-And it's not a volume difference!!!

This is playing the same song as WAV and WMA Lossless back to back out of the PC, which eliminates the possiblity of extra jitter coming from the Creative Labs PC soundcard digital out (although does not eliminate the possiblity that WMA lossless generates more jitter than WAV on playback). I also hear the same differences when WMA Lossless is compared to the original CD using digital outs of various Sony gear. My system:

Musical Fidelity CD Pre 24 (multiple digital ins)
Musical Fidelity A308 CR Amp
Harbeth Compact 7 ES-2's or
SoundLab Dynastats
Creative Soundlabs Digital PC Output set at 44.1 KHz, but can run up to 96 kHz/ 24 bit.

I'm very interested to hear if anyone else hears what I hear. Or can suggest a better lossless (although you'd best be sure as this will mean ripping it all again!).

Thanks for listening.
jee
wstritt
170 posts
 
Haven't done what you have done so haven't heard anything.

However, you might try using Apple Lossless conversion rather than WMA.

I recall that someone reported in Stereophile, I believe in conjunction with their review of the iPod, that they had compared WAV files ripped from CDs to the same files converted to Apple Lossless then converted back to WAV and determined that there were no differences (on a bit by bit basis) between the two files. Absent something else influencing the results, should get the same sound.

Good luck.
wstritt
170 posts
 
Excerpt from November, 2004 Stereophile review of Indigo I/O soundcard

"I used iTunes as my primary playback engine, with Apple Lossless Compression applied to the test tracks to keep file sizes manageable. As I wrote in September, ALC compresses AIF files to about 40% of their original size without losing any information. Some readers have asked if ALC changes the sound. But think about it: If the reconstructed file data with ALC are the same as the original AIF, the data presented to the DAC for decoding are the same and the sound must be the same, other than the effects of word-clock jitter. However, though jitter will depend on the stability of the computer's master clock, it will affect ALC and AIF files equally. If the data are the same and the jitter is the same, then the sound should be the same. I certainly heard no differences between an ALC file and the AIF file from which it was made."

Presumably the actual commentary on measurement was in the September, 2004 issue. Unfortunately it does not seem to be online.

edesilva
768 posts
 
This might be interesting reading specifically on WMA:

http://www.hydrogenaudio.org/forums/lofiversion/index.php/t31615.html
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riverside13
6 posts
 
you might want to consider ripping with EAC (exact audio copy)then using J River to search your hard drive and add to J River playlist; at this point you can add tags and album covers to the wav files. This will give you the most accurate error free wav files (with EAC) and easy filing/retrieval with unlimited options with J River. I then play these wav files through a wave terminal u24 digital output to a trivista dac and the sound is very close to my cdp.
good luck, it will take time but well worth it.
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