[Current Date]
Some institutional releases (notably for the Navy’s "Gateway Assessment Study" in the 1980s) had longer lead-in tones. The "-l" may indicate the "Long" variant of Focus 10, which gives the brain 15 minutes to synchronize rather than 5. Hemi-Sync - The Gateway Experience -FLAC- -corrected-l
Some original CD releases (and subsequent rips) were slightly sped up or slowed down due to master clocking errors. A "corrected" version likely refers to pitch correction back to 440 Hz concert pitch or the original master tape speed. Changing the pitch changes the binaural beat frequency; a 10 Hz theta wave slowed by 2% becomes a 9.8 Hz muddled wave. [Current Date] Some institutional releases (notably for the
– Exploration of the "Energy Bar Tool" and "Remote Viewing." Hemi-Sync - The Gateway Experience -FLAC- -corrected-l