I can offer a hypothetical--however do not know know practical it will turn out to be. There is a fair amonut of bad science on this topic on you tube. The gamma wave frequency is associated with attentional focus and arguably a unified sense of self. If it could be entrained it should lead to a meditative focus-like exceptionally well-trained meditators. Some but not all studies on meditating Buddhist monks suggest this is so. Does this really and more generally occur--I will say there is nothing lost in trying--we all go into a 40Hz range on occasion without ill effect-- but I would not put confidence in the purported methods out there at present. Good luck.
While binaural beats are the most common technique we use for producing brainwave entrainment music, we do use other brainwave entrainment techniques such as isochronic tones, monaural beats and amplitude modulation. If these techniques have been used then you will find them mentioned in the written description of the music productions that include them. If not mentioned, then you can assume that binaural beats are the only brainwave entrainment technology in use.
For centuries, brainwave entrainment has been associated with a number of benefits. Of the range of brainwave states that exist there are four frequencies that are the focus of brainwave entrainment; each of these states has a different physiological effect and achieves a different result. What they have in common is the power to trigger your state of mind in order to get a specific outcome.
Like I’ve said, anyone can throw together a low-quality audio, and fool someone who is not that familiar with brainwave entrainment. At the same time, anyone who genuinely cares enough to study, learn, experiment, and practice, practice, practice can make a good quality audio as well (without a degree in neuroscience, or some kind of “certification”) However, this takes time, and that’s why everyone doesn’t quit their day job to spend their lives creating brainwave entrainment technology (except me and a handful of other brainwave entrainment geeks out there)
Isochronic tones are basically just a single tone with the volume being turned on and off at regular intervals. When you apply the same effects to music or a noise, it’s usually referred to as amplitude entrainment effects (in Mind Workstation anyway). When you apply the on/off effect to music or noise it’s usually done by targeting a specific frequency range in the sound and only turning that part on/off, leaving the rest of the music/noise untouched. What that does is allow parts of the music/noise to play without being distorted/interrupted, making it sound more pleasant to listen to. It produces a kind of fluttering sound as I like to call it and you can adjust the level of intensity.
Because each track is specifically aimed at attaining a certain outcome, you can pick exactly which track you want for what you want to do. This is great for beginners because you can start off with some simple tracks such as Instant Energy Boost or Endorphin Release. And then if you find you like them you can choose some of their more hardcore stuff (such as Lucid Dreaming or Shaman Consciousness).
Sleep improvement: There is significant anecdotal evidence that sleep induction and/or quality may be improved as a result of brainwave entrainment. While it is important to consider the placebo effect or simply the effect of a relaxing sound, many people have reported noticeable improvements in their ability to fall asleep and wake up feeling refreshed as a result of entrainment. Entraining frequencies within the slower wave ranges such as alpha, theta, or delta, may help individuals transition more quickly to those states.
Both brainwave entrainment and neurofeedback deal with brainwaves, but the similarity stops there. Entrainment pushes your whole brain into a pre-determined state, while neurofeedback teaches you how to move specific parts of your brain on your own. It is the differeence between forcing the brain into a given position, and skills building so you can move it there yourself.