Sleep tuning
Best carrier frequency for sleep: comfort wins
The best sleep carrier frequency is usually the one you can listen to quietly for the whole session without irritation.
Carrier frequency is the audible tone
In a binaural session, the carrier is the steady tone you hear in each ear. The beat difference is the small gap between the left and right frequencies.
For sleep, an uncomfortable carrier can ruin the session even if the beat difference is theoretically appropriate.
Lower and softer often works better at bedtime
Many people prefer lower carrier frequencies for sleep because they feel less piercing at low volume. Others prefer a slightly higher tone because it is easier to hear softly.
Use the manual controls only when a preset feels uncomfortable. Move slowly and test small changes instead of sweeping across the full range.
Keep the beat slow for sleep
If your goal is sleep, keep the beat difference in the slow relaxation or delta-style range and adjust the carrier mainly for comfort.
Deep Sleep is a good baseline because it already pairs a low carrier with a slow beat difference.