WAV versus FLAC

I wish to thank everybody who shared his or her aural observations as well as to these who shared with me their knowledge of the basics of engineering and psychology.

I cannot experiment (yet) as I do not have yet the music server - blame go to Alex with his extraordinary optical storage based front end I am 99.9% close to decision to get Diamond from Sonic Science - in moment Neal will let me know if he can implement some engineering "toys" I asked him to implement. I just want to enjoy HiRez downlaods and they take a space. I know a little about bits (other then that these bits bite sometimes) and eager to learn relevant info. Thank you

For what its worth, I used EAC and ripped Williams SeaSymphony - TELARC: firstly in WAV format and then in FLAC format in two separate folders

On one hand I use low fidelity computer audio...so my results may be dubious

On other hand - After I listen to these a few times, I asked my wife to go beteen file#1 and file#2 and "click" and I was listening BLINDLY

Results: from 9 trials I indentified WAV and FLAC correctly 9 times and it was rather easy as each has its own unique sonic characteristic.

I cannot say which one is "better": WAV was warmer but softer and FLAC was crisper but not bright and with better PRAT factor. If this is true "forever" then probaply WAV is better for solos such as female voice and small ansembles and FLAC is better for symphonic music...

its not definite experiment but its was fun, please do not take it seriously.

" ...the quality with FLAC (and other lossless formats) greatly varies on different computer configurations. So it looks like it is indeed a computer issue"

Hmmmmmm, I did my "fun" experiment using relatively powerful CPU - Intel Core i7 950 3.06GHz (Quad Core), ASUS Rampage III motherboard with SATA3, 12 GBytes of RAM and a SATA3 Hard Drive etc - hardly a typical "slow" computer having audible problem in FLAC processing.....

Of course, very obviously that problem lies not with bit-by-bit file but with hardware and/or software involved or may be satan involvment.

While, I "ripped" using EAC, the payback was Media Monkey
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" some, like Simo, above hear it regularly enough to ID file types...or at least tell the difference."

Oh no dear. I don;t have music server yet. Just I read so much that FLAC and WAV sound (or should sound) identical that the statement of contrary from the highly respectable professional audio engineer "forced" me to post original question - just curiocity, nothing more -this why this forum exist.

This small experiment of mine was 10 minutes - one time shot test using my working computer NOT regular listening to music from server (as I don;t have one) and for fun only.

I, personally attribute the difference I very clearly observed to my 12 years education as the professional pianist as well as blind nature of testing with... 100% accuracy.

Speaking about nature of testing - PLEASE, do your testing BLINDLY only BLINDLY and BLINDLY only

Almarg: Thank you for the warning. I am going to investigate it. Simon