The ‘Noise’ Machine
This machine is able to generate noises of diverse spectral distributions (see below) which can be used, mainly, for:
- Canceling external noises
A continual noise which covers almost the full range of frequencies audible by human ear, eventually forces the brain to set a new silence threshold. Every external noise below the volume of this noise simply stops being perceived.
- Generating rhythms
Through the Amplitude Modulator, this machine is able to produce from bashes to industrial machinery, even wind and sea waves.
Not all noises are equal. Some of them are high-pitched and harsh, others are low-pitched and bubbly. This machine allows a smooth gradation between both them using the main slider. Using Acoustics jargon we can speak of:
It can be generated using a totally random signal. It is not abundant in nature, and sound harsh and annoying, but it can cancel even nastier high-pitched sounds, like they that make you cringe. There is more information at the Wikipedia.
It is halfway between White noise and Red noise.
RED or BROWNIAN noise
This sound is totally unrelated to the Brown Note, the fictional sound that makes you lose control of your bowels.
Brownian noise is very common in nature, and it belongs to the noise made by a big waterfall, or from a big prairie full of singing crickets, to give two examples. Aural hallucinations are not rare while listening to brownian noise, and many people eventually hear sounds like distorted guitars or screaming saxophones improvising crazy melodies.
This noise is perfect for masking low pitch noises, like the ones coming from building refurbishment or dragged furniture.
This is the only machine in Deepware Brainwaves which allows full stereo panning, because it does not use any binaural effect (which always requires two channels working simultaneously).