Frequency for sleep 0.5hz 4hz

0.5 Hz: This is within the 1–4 Hz delta range associated with deep sleep, though the cited description of sleep-related sound stimulation uses tones just below 1 Hz—not specifically 0.5 Hz. 1 4 Hz: This is at the upper edge of the 1–4 Hz delta range, which is associated with helping the transition to and maintenance of sleep; 4–8 Hz theta activity is described as deep relaxation or subtle sleep/meditation, not simply “lighter sleep.” 2

Binaural beats use different sound frequencies in each ear, and low-frequency beats may support relaxation or sleep, but the material does not specifically recommend a 0.5–4 Hz bedtime range or give a bedtime routine involving dimming lights and reducing screen time. 3