No. The Hemi-Sync® process has evolved into a sophisticated multi-layering of Hemi-Sync® signals – “designer mixes” of sound frequencies, fashioned to be optimally effective for a given application. Naturally, Hemi-Sync® sleep products incorporate predominately delta frequencies; learning products predominately beta and so forth. However these designer mixes are supplemented with special sound frequencies, which enable the desired result. This is the “key” to the effectiveness of Hemi-Sync.