Hemi-sync and MP3

[Tom]

You know how it works. One ear receives a different frequency than the other ear and the difference between the two appears to come from the middle of your brain. MP3 compression throws out the inaudible parts. If your ears cannot pick it up them it does not count anyway. If you do not believe that MP3 files sound the same as wav files or CD audio then there would be reason to doubt MP3 binaurals. Some codecs mix the left and right channels and this is the only thing you have to avoid. I remain fully convinced that a 7-10 Hz difference between the left and right sides will be retained in MP3 compression.

[Helmut]

Hi stefand,
I made some frequency analysis on MP3 Hemi-sync files. The binaural beats are all there.

Helmut

[stefand]

Thanks, that's reassured me. By the way, has anyone here had any successful results using the MP3s?

[Tom]

No projection so far. I have found, though, that some of the MP3 binaurals I burned to CD are interesting in the way they affect my consciousness. Most of them annoy me even uncompressed. I can't tell the difference between MP3 files I made and the original. Wave 1 was interesting. Series 2 Astral Trance by Brainwave Mind Voyages is the only one I have listened to half a dozen times.

[Nick]

stefand,

While not a direct response to your question on MP3, I thought you might be interested in looking at a website on the insight cd. I posted the link at this forum. Several people wrote with information that will give you a lot more detail:

http://www.astralpulse.com/forums/topic.asp?TOPIC_ID=4407

Very best,

[astralmaster]

Helmut,
Just out of curiosity, how did you do a frequency Analasys on mp3 files?

[Helmut]

Hi David,

my reply to topic link is working again, so I will paste our private massage to the forum.

1. letter from Helmut
Hi,
would have prefered to answer in the regular threat, but my repley to
topic link is broken very often since two weeks or so. I already posted to Adrian, but still..

To your question: just load the MP3 file to Cool Edit 2000 (tryout version if you dont have it) and do Analysis/frequency. I think you dont even have to convert it to wav, which would be another way to do it. If you are interested in more details ask.

letter from astralmaster:

Thank you so much for your reply.
Are you saying that after that I should calculate the frequency difference
between the right and lift side, and that would be my binaural beat
frequency?

Yours
David

2. letter from Helmut:

Hi David,

Doing frequency analysis to one single hemi-sycn signal is quite simple. You just run the frequency analysis some short fractions of the file and you get the Hemi-sync frequency from the difference of the left and right cannel (200hz -196hz = 4hz e.g.).

But this is theory! Actually hemi-sync files from TMI and other sources have a very complicated setup. They have up to ten or so different carrier frequencies with biaural (hemi-sync) and monaural beats. Monaural beats are different frequencies on the same side(ear), like 800hz and 827hz, which is a monaural beat of 27hz. The reason to use monaural beats is that hemi-sync signals of  frequ.  higher than 20hz or so, are difficult to hear( depending on sex, age, carrier frequency, vigilance ...).

Most people working with hemi-sync signals, think that they only do a job by bringing you into a state of deep relaxation (alpha, theta and delta state),but are not aware of the higher binaural and monaural beats that keep you awake and stimulate higher cognitive and thinking processes. As a general rule you can say: the higher the focus level, the higher the mon/binaural beat used.

If you run a simple frequency analysis on a sophisticated file, you wont discover this. You have to slice the frequency range of the file into very narrow pieces to see this. I am still looking for a frequency analysis programm, that can do all this better than cool-edit.

As a psychologist I am very interested in the relation between brain wave frequencies and states of mind( e.g. focus levels). TMI (The Monroe Institute) make all their knowlegde about this quite a secret. At least they have published the Going Home Tapes, for which I am greatful.

Hope this helps
Helmut

[astralmaster]

Helmut,
That is absolutely fascinating. How did you go about figuring that out?

[Helmut]

Hi David,

from all of Monroes books, including his biography: catapult and the TMI materials, I got the suspicion that the focus level actually is a direct reference to the (highest) frequencies used to attain these levels. It is not that simple! As I told you, they use a sophisticsted mixture of different signals. What I found out is, that

Focus 10 is mainly 4hz hemi-sync
Focus 12 is mainly 10hz hemi-sync
Focus 21 is mainly 16hz hemi-sync
allways together with low frequency signals, tones, music and pink noise.

So this did not quite confirm my theory, but I think one can see the system behind.
Its also quite sure that TMI  sells a defused version only of their original resident programms and this could also imply, that they lowered the frequencies used. In this case my original theory would still hold. They sure lowered some of the signal volumes to make it saver for beginners.

From all the different systems I tried so far, including my own experimental files, the original hemi-sync cds/tapes work best for me. I specially favor the Wave VII Odyssey CDs and the Going Home - Subject tapes. They have a much better design than the "old" WAVE I -VI that sound a bit old fashioned in comparison. They also use higher focus level up to focus 27 (Going Home).And they are Monroes later works.
I am very happy at the moment with Going Home which I bought 3 weeks ago.

Still some questions?

Helmut

[stefand]

Hi all. Does listening to hemi-sync, the gateway series in particular, on a MP3 player stop it from working? The files are at least 128kps.