sounds:zoia

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sounds:zoia [2023-04-23 21:18] – asdfsounds:zoia [2024-02-13 23:40] (current) – [Bluebox MIDI sync] remove section, as it is not feasible asdf
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 ===== Patch notes ===== ===== Patch notes =====
 +
 ==== Turing Machine ==== ==== Turing Machine ====
 To imitate the Music Thing Turing Machine, we use a ring of sample and hold modules as our shift register. The output of the last is fed into both the output and an input switch. The switch is controlled by a comparator whose inputs are the write probability (positive) and a triggered random value (negative). When the latter exceeds the former, the ring continues to loop unchanged; otherwise, a new note is inserted into the start of the loop. Thanks to the module's versatile I/O options, the final output can be sent to an oscillator, a MIDI device, or through the control port as CV.   To imitate the Music Thing Turing Machine, we use a ring of sample and hold modules as our shift register. The output of the last is fed into both the output and an input switch. The switch is controlled by a comparator whose inputs are the write probability (positive) and a triggered random value (negative). When the latter exceeds the former, the ring continues to loop unchanged; otherwise, a new note is inserted into the start of the loop. Thanks to the module's versatile I/O options, the final output can be sent to an oscillator, a MIDI device, or through the control port as CV.  
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 </graphviz> </graphviz>
  
-My first idea was to use a sequencer module. Each step can be set with input from another module, and the sequencer has a reset input. By using a counter as a trigger, I had hoped to be able to make the number of steps easily adjustable. I had to walk away from that attempt for several reasons, and I'm only now realizing that the Zoia has no built-in counter module, let alone the ability to count beyond 1. +An alternative idea would be to use a sequencer as the shift register. This arrangement requires a connection to each step of the sequence, but it allows us to dynamically adjust the number of steps (and program an initial sequence).  
 + 
 +<graphviz> 
 +digraph G { 
 +  rankdir=LR; 
 +   
 +  seq; 
 +  lfo_ramp [shape="circle", label="Ramp"]; 
 +  rand1 [shape="circle",label="Random"]; 
 +  rand2 [shape="circle",label="Random"]; 
 +  quant; 
 +  dmux; 
 +  mux; 
 +  comp1 [shape="triangle", orientation="270"]; 
 +  comp2 [shape="triangle", orientation="270"]; 
 +  var_steps [shape="cds", label="Steps"]; 
 +  var_pwrite [shape="cds", label="Pwrite"]; 
 +  out; 
 +   
 +  var_pwrite -> comp1; 
 +  rand1 -> comp1; 
 +  rand2 -> quant -> mux; 
 +  comp1 -> mux [headlabel="sel"]; 
 +   
 +  mux -> dmux; 
 +  dmux -> seq [penwidth=2,label="one for each step"] 
 +   
 +  lfo_ramp -> dmux [headlabel="sel"]; 
 +  var_steps -> comp2 [headlabel="-"]; 
 +  lfo_ramp -> comp2 [headlabel="+"]; 
 +  comp2 -> lfo_ramp [headlabel="phase reset"]; 
 +  comp2 -> seq [headlabel="reset"]; 
 +   
 +  seq -> mux; 
 +  seq -> out; 
 +} 
 +</graphviz>
  
 ===== Module reference ===== ===== Module reference =====
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 === Cabinet sim === === Cabinet sim ===
  
 +{{tag>needswork}}
  • sounds/zoia.1682284713.txt.gz
  • Last modified: 2023-04-23 21:18
  • by asdf