Introducing STRACHEY

This video introduces the Random Looping Sequencer 'STRACHEY'. The module is named for computer pioneer Christopher Strachey. Biographical information can be found at: https://en.wikipedia.org/wiki/Christopher_Strachey https://history.computer.org/pioneers/strachey.html Details of Stracheys' involvement in the first recording of computer-generated music can be found at: https://link.springer.com/chapter/10.1007/978-3-319-53280-6_8 https://blogs.bl.uk/sound-and-vision/2016/09/restoring-the-first-recording-of-computer-music.html Full design details for the STRACHEY Sequencer are at: https://github.com/m0xpd/STRACHEY and the Tuning Strategy which is central to STRACHEY's operation, is at: https://github.com/m0xpd/TuningStrategyForVoltages STRACHEY's architecture is inspired by Music Thing Modular's 'Turing Machine' and its 'Voltages' expander. STRACHEY implements a software version of a Turing Machine and TWO VOLTAGES expanders, which it tunes according to my "Tuning Strategy'. The two virtual Voltages expanders produce outputs for STRACHEY's channels A and B. Even though they are both set to the same initial tuning, channel A and B's outputs are different because: 1) Channel A appears at every beat of the system clock, whereas Channel B only appears at the onsets of a Euclidean Pattern of length equal to the Turing Machine's cycle length and density set by STRACHEY's DENSITY controls. A CV input allows the density to be modulated to provide change and interest to this parameter. 2) Channel A's pitch range can be extended by up to 3 octave using the SPAN controls. Again, SPAN can be CV controlled. 3) STRACHEY implements a 'Permutation matrix' between the gates and weights of channel A, which can change dynamically according to 16 different 'METHODS', thereby introducing a new dimension of variation to Random Looping Sequencers. Like all STRACHEY's functions, this permutation is under CV control.