| Red Noise |
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In science, red noise, '''Brownian noise''', or '''brown noise''' is the kind of Signal Noise produced by Brownian Motion . EXPLANATION The graphic representation of the sound signal mimics a Brownian pattern. Its Spectral Density is proportional to 1/f2, meaning it has more energy at lower frequencies, even more so than Pink Noise . It decreases in power by 6 DB per Octave and, when heard, has a "damped" or "soft" quality compared to White and Pink Noise . See also Purple Noise , which is a 6 dB increase per octave. PRODUCTION Brown noise can be produced by Integrating White Noise . That is, whereas ( Digital ) white noise can be produced by randomly choosing each Sample independently, brown noise can be produced by adding a random offset to each sample to obtain the next one. SEE ALSO |
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