What Are Binaural Beats?

January 13, 2016

There are three main types of sound-based brainwave recordings: binaural beats, monaural beats, and isochronic tones. Our audio programs use combinations of all three types, in addition to music and affirmations.

Binaural beats were discovered in 1839, and have been studied extensively. They have been shown to be a viable and effective method of brain retraining. These beats work by introducing two pure sine wave tones of different frequencies to the brain – usually through headphones.

Each ear receives one tone, and the brain combines the two sounds to create an internal pulse. For example when a 315 Hz wave is played into the right ear and a 325 Hz wave is played into the left ear, the brain integrates these tones to create a pulse that repeats at a rate of 10 Hz, which is in the Alpha range. Since the Alpha range is associated with relaxation, this has a relaxing effect. The pulse produced by the brain exists only within the brain itself.

The frequencies of the two tones must be below 1,000 hertz for the beating to be noticeable. The difference between the two frequencies must be small (less than or equal to 30 Hz) for the effect to occur; otherwise, the two tones will be heard separately and no beat will be perceived.

Binaural beat stimulation has been used extensively to induce a variety of states of consciousness, and scientists have studied the effects of these stimuli on relaxation, focus, attention, and states of consciousness. Binaural beats have been used successfully to decrease anxiety, enhance relaxation, and for the treatment of addictions.

Blog Archive
« Back to Blog
Learn More