The Ultimate Binaural Beat Generator | Online & Free

If you need to be calm, focused, be in a super learning mode, or sleep and dream, try binaural beats. They get your brain in coherence. They work for me, and I have recommended this to many people. You can create your own with this website or you can find pre-made ones by others on youtube. I like them with relaxing music. Has anyone else tried this?

"Brainwaves are electrical activity patterns caused by the neurons of the brain communicating with each other. Brainwaves can be detected using sensitive medical equipment such as an EEG. They provide an indication of the mental state of an individual.

Brainwaves are divided into four main categories: the Delta waves, when deep sleep occurs; the Theta waves, associated with a state of somnolence and reduced consciousness; the Alpha waves, when we are in a state of physical and mental relaxation; and the Beta waves, emitted when we are consciously alert, or when we feel agitated or tense.

Brainwave frequencies are in the range of 0.1 to 4 (Delta), 4 to 7 (Theta), 7 to 13 (Alpha) and 13 to 30 (Beta) cycles per second (Hz).

Brainwave entrainment (or synchronization), aims to cause our brainwave frequencies to fall into step with a periodic stimulus having a frequency corresponding to the intended brain-state. This can be used, for example, to induce sleep. This page uses binaural beats as auditory stimuli."

1 Hz - Delta | Lethargic
2 Hz - Delta | Deep Sleep
3 Hz - Delta | Dreamless
4 Hz - Theta | Drowsy
6 Hz - Theta | Fantasy
8 Hz - Alpha | Relaxed
12 Hz - Alpha | Conscious
16 Hz - Beta | Focused
24 Hz - Beta | Active
32 Hz - Beta | Fear


"A binaural beat is an auditory illusion perceived when two different pure-tone sine waves, both with frequencies lower than 1500 Hz, with less than a 40 Hz difference between them, are presented to a listener dichotically, that is one through each ear. For example, if a 530 Hz pure tone is presented to a subject's right ear, while a 520 Hz pure tone is presented to the subject's left ear, the listener will perceive the auditory illusion of a third tone, in addition to the two pure-tones presented to each ear. The third sound is called a binaural beat, and in this example would have a perceived pitch correlating to a frequency of 10 Hz, that being the difference between the 530 Hz and 520 Hz pure tones presented to each ear.

Following the technique of measuring such brainwaves by Berger, there has remained a ubiquitous consensus that electroencephalogram (EEG) readings depict brainwave wave form patterns that alter over time, and correlate with the aspects of the subject's mental and emotional state, mental status, and degree of consciousness and vigilance. It is therefore now established and accepted that discreet electroencephalogram (EEG) measurements, including frequency and amplitude of neural oscillations, correlate with different perceptual, motor and cognitive states.

Furthermore, brainwaves alter in response to changes in environmental stimuli, including sound and music; and while the degree and nature of alteration is partially dependent on individual perception, such that the same stimulus may precipitate differing changes in neural oscillations and correlating electroencephalogram (EEG) readings in different subjects, the frequency of cortical neural oscillations, as measured by the EEG, has also been shown to synchronize with or entrain to that of an external acoustic or photic stimulus, with accompanying alterations in cognitive and emotional state. This process is called neuronal entrainment or brainwave entrainment.

Entrainment is a term originally derived from complex systems theory, and denotes the way that two or more independent, autonomous oscillators with differing rhythms or frequencies, when situated in a context and at a proximity where they can interact for long enough, influence each other mutually, to a degree dependent on coupling force, such that they adjust until both oscillate with the same frequency. Examples include the mechanical entrainment or cyclic synchronization of two electric clothes dryers placed in close proximity, and the biological entrainment evident in the synchronized illumination of fireflies.

Entrainment is a concept first identified by the Dutch physicist Christiaan Huygens in 1665 who discovered the phenomenon during an experiment with pendulum clocks: He set them each in motion and found that when he returned the next day, the sway of their pendulums had all synchronized.

Such entrainment occurs because small amounts of energy are transferred between the two systems when they are out of phase in such a way as to produce negative feedback. As they assume a more stable phase relationship, the amount of energy gradually reduces to zero, with system of greater frequency slowing down, and the other speeding up.

Subsequently, the term 'entrainment' has been used to describe a shared tendency of many physical and biological systems to synchronize their periodicity and rhythm through interaction. This tendency has been identified as specifically pertinent to the study of sound and music generally, and acoustic rhythms specifically. The most ubiquitous and familiar examples of neuromotor entrainment to acoustic stimuli is observable in spontaneous foot or finger tapping to the rhythmic beat of a song.