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- Order number: 120092
- Depth: 40
The A-117 provides two units: a digital noise source with variable clock rate for noise and digital random as well as a nice 808-ish sound source with two or six oscillators for cowbell, hi hat or cymbal sounds.
The digital noise generator uses random sequences of square waves (18 step shift register with multiple feedback), whose rate can go from random clicks to noise. The colour of the noise is very different from the analog noise produced by the A-118. The frequency range of the internal clock oscillator is about 100Hz - 100kHz.
In addition to a manual setting, the rate can be controlled by an external clock, also in audio rate.
The 808 Source aims to re-create the sort of multi-oscillator array that was used in Roland's TR-808 and 606 drum machines as the basis of the sound of the hi-hat, cymbals and cowbell. The cowbell mix uses two oscillators, and the cymbals mix six.
A-117 auf Doepfers Homepage;http://www.doepfer.de/a117.htm; Bedienungsanleitung (pdf);http://www.doepfer.de/a100_man/a117_anl.pdf
WIth a long trajectory building synths, MIDI keyboards and designing bespoke devices for music pioneers Kraftwerk, Dieter Doepfer decided to design his own modular synthesizer in 1995 based on existing electrical and mechanical specifications of lab equipment he used during his years at university. The official presentation of the system at 1996 Frankfurt Musikmesse caught everyone by surprise and created lots of interest. After Doepfer published the specifications on his website, many instrument designers and engineers saw the potential of the new Eurorack format. Doepfer continues expanding their catalog of over 200 modules (and counting), operating from their modest offices in the outskirts of Munich.