Autism and Aspergers Treatment Binaural beats (ADHD, SPD)Beta Brain Waves With Isochronic Tones (12-15 Hz) | Good Vibes 
Frequency Used :
12.0-15.0 Beta (low) – relaxed focus, improved attentive abilities [NEU+CRI]; Treating Hyperactivity [RA] ; Sensorimotor Rhythm (SMR) – Used in the treatment of mild autism .
How to use binaural beats:
Find a comfortable place free of distractions. It's important not to listen to binaural beats when you need to do something that requires your full attention like driving. Avoid any tasks that are mentally demanding because the meditative state is not conducive to quick, action-oriented critical thinking.
Listen to binaural beats when you want to relax, clear your mind, get your creative juices flowing, engage your intuition to help solve problems and for personal development work such as repeating affirmations and doing visualization.
Be sure to give yourself enough listening time! The brain requires about 7 minutes to entrain, or fall in sync, with the audio stimulus. Give yourself at least 15-30 minutes of listening time to experience the benefits.