In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound waves above 20 kHz are known as ultrasound and are not perceptible by humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.

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Echo & Reverb Box

Echo & Reverb Box

“This build is based around a great little reverb module you can get on eBay for under $5. Ive used it now in a couple of projects (listed below) but this time I wanted to have a stand along reverb …

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