ELECTRONICS:

This section is handled completly by the software, which provides a stereo output with two synth. In the first version of software we created a precalculated sinusoidal wavetable. In some softwares the wavetable is calculated once per cycle, stretching it basing to the frequency.

PROJECT PURPOSES:

It is important to coadiuvate the effect of the light stimulations in a matter that work synergically with the first one.

Usually the domain frequencies of stimulation covers from 0Hz to 30/40Hz. There is no ways to stimulate a subject banging in his ears pulsing waves in this domain (usually human hearing domain starts from 40-50Hz). So there is a technique known as BBF (Binaural Beat Frequency).

The trick is to use a base frequency of 300/400Hz or more, with two synths which provide a double-channel output. One channel is shifted of n Hz while the other is fixed at the base frequency. These output are amplified and played by a common stereo headphones. As every student knows is that if we have two similar waveforms frequency-shifted of n Hz (n=0..50), we could hear an amplitude modulation which has the exact frequency of n Hz (Beat Frequency).

This is the way. Beat is generated virtually in our brain. Someone says that it is a good way to synchronize the two brain hemisphere.