wishbone...
I would agree with pinkfreud-ga that it would be hard to exactly
duplicate current holosync productions. However, I own some very
early productions, and the basic sonic structure is more obvious,
and not covered by other sounds. As I understood it then, the
basic technique was to use separate frequencies with each ear,
resulting in an artificial 'beat' frequency, perceived by the
listener in the middle of the brain, consisting of the difference
between the two. This beat frequency was manipulated, for example,
from 12hz (hertz, or cycles per second) - a waking brainwave
frequency, down to, say, 5hz - theta wave frequency, thereby
'entraining' the brain and moving it into creative levels normally
only achieved in deep sleep. This could be done, for example, by
using 300hz in the left ear and 312 in the right, and then reducing
the right frequency. This is still the basic technique, as far as
I know, to which subtle sophistications have been added.
One of the programs cited in pinkfreud's previous answer, linked
in her comment above, is for the program "Brainwave Generator",
which, as she noted, can be downloaded here:
http://www.bwgen.com/download.htm
or here: http://www.simtel.net/pub/dl/15525.html
I've used this program, and it reproduces the basic technique
described above, and additionally, has some enhancements,
such as secondary voices, and background sounds. It is also
programmable, so you can create your own programs.
Oh, and did I mention that it's free! The registered
version allows you to 'import' other pattern files created
by others, but the free version comes with many good ones,
and allows you to save the ones you create yourself.
I have every confidence that this would satisfy your needs.
If you check it out and agree, let me know, and I'll post
this as an answer and arrange for the a percentage (defined
by you) to go to pinkfreud-ga, as you wish.
sublime1-ga |