Comfort  Sound Technology® makes drumming and rhythm uniquely accessible for people with sensitivity to sound, including many people with autism and other special needs. The proprietary construction is designed to reduce the duration of decay more than 50% compared to Mylar® drumheads. Comfort Sound Technology® produces a unique quality of sound and is a great fit for anyone who likes warm, low tones and big vibration. Drumheads with Comfort Sound Technology produce frequencies ranging from a low of 31hz to 65hz depending on the drum diameter.