For the upcoming White Noise Boutique, I’ll be generating bespoke white noise for visitors using a variety of methods. These quick tests show that, while they sound essentially the same, different algorithms do in fact generate different white noise. For each generator, a spectrogram and frequency plot are shown for a ten-second sample. The plots were generated with Audacity.
Above: the AES_OFB algorithm from the Dieharder suite, one of two cryptographically-secure methods.
Linear congruential generator, an old-fashioned and non-secure generator.
The only “true” generator here, via the operating system’s built-in “dev/random” command, which creates random numbers from hard drive entropy.
The Threefish generator, also via the Dieharder suite and the other cryptographically-secure algorithm.
A few historical random number generators. From top to bottom: Galton’s dice (capable of 24 digits instead of the usual 6), a Type 1390-B Random Noise Generator (runs on 6D4 tubes and was likely the device used for RAND Corp’s “A Million Random Digits”), and the first two iterations of random.org’s generators (both run on un-tuned radio noise fed into a computer).
I particularly like the plug on the left side. Via IET Labs.
Renderings for a store selling boutique white noise – includes lathe-cut records, specialized algorithm- and radiation-based noise generation, and a faraday cage for data privacy.
Continue reading “White Noise Boutique: Renderings”
In 1922 in the port town of Baku in celebration of the fifth anniversary of the revolution composer, performance instigator and music journalist Arseny Avraamov (1886-1944), inspired by the poetry of Alexei Gastev, has staged his best-known creation – the Symphony of Sirens. This bruitist spectacular used the services of a huge cast of choirs joined by spectators, the foghorns of the entire Caspian flotilla, two batteries of artillery guns, a number of full infantry regiments including a machine-gun division, hydroplanes, and all the factory sirens of Baku. Conductor posted on specially built tower signaled various sound units with colored flags and pistol shots.
While I could find no recordings online, there is apparently this book with CD which you can preview here. The above image is of Avraamov conducting the performance.
Via: Theremin Center
Revision: noticed the other day that the above CD cover looks a whole lot like the tonewheels I’ve been looking at. Strange.