Hi there,
if it's any use to you I have used LifeFlow with mp3, C.D.'s and ipod. I find all of them work equally well and have and continue to experience amazing results. I am not technically minded so I have copied a piece from Raven who is. Hope this helps you:-
I think I can answer your question. With your familiarity with audio work you're probably aware that any mp3 compression reduces both the top end and lower end of the frequency spectrum of a sound. It's not like compression in Zip format. In mp3 you're not eliminating blank spaces, you're trimming off the top and bottom ends of the sound spectrum.
Presuming that Michael's originals for LifeFlow were .wav formatted files, and are first generation mp3 compressions to 192kbps mp3 directly from the original .wav, loss of audio would be negligible. Like you, I can generally pick out compressions just by listening. I have both the downloaded versions of LifeFlow as well as the originals on CD and can verify that to the ear of a non-professional there will be little or no discernible difference between the versions. In particular, when I ran my tests on the wave intensity of the actual entrainment waves buried in the tracks I could find no differences at all, either by ear or on the spectrograph.
The entrainment waves would appear to be too far from either the top or bottom end of the audio spectrum to be affected by mp3 compression as little as 192kbps. I suspect Michael could probably have gone down as low as 160kbps and still had no degradation. At 128kbps...I think we might have seen some loss. Probably not a lot, but some.
But since my ear has been so acutely sensitized, like yours, I had to have both the CD version as well as the downloaded set. That's just me being anal, though. In reality I'm sure it makes no difference at all.
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Having used the whole LifeFlow series and having beneffited in so many ways, I realize it is easy for me to feel this confident, however I have seen so many wonderful success stories from people who have used only the download method. Also, I had invested a great deal of money and time on other programmes in the past which were of little or no help to me. When I was first introduced to Michael and Project Meditation I was hugely impressed with not only LifeFlow but also his free course Discover Meditation. I wish you much happiness and joy on your journey of self discovery
