I have been following this thread since the beginning and start doing to research on an effective way to do meditation. I came across a website called brainsync
http://www.brainsync.com/ that excite the brain wave at beta, alpha, theta and delta frequency with differential sound in both right and left side.
Have this approach ever been combined with the solfeggio frequencies
http://www.astrovera.com/philosophy/...equencies.html
to accelerate the meditation process?