Belles Ondes : Creative Engineering

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===== PunchLine Adaptive Delay =====
Instrument delay with fine controls for precise delay ciseling.

==== Overview ====
{{drawio>punchline:functional.png}}

  * Mono delay line - Faust smooth Delay model
  * Guitar level input, One guitar level output
  * Delay Tail to maintain delay tap propagation when FX is turned Off, otherwise turning off operates "like" a true  bypass
  * Hi and Low frequencies cut within feedback channel
  * Three modes
    * Manual Mode : Time adjust Manually from TBD to TBD, feedback manual adjust from 0.1 to 1.1
    * Tap Tempo mode : Delay time adjusted using Tap Tempo input
    * Tap Signature mode : Delay time adjusted using fractions of tap tempo, selected by delay time knob.


==== Operation ====
{{drawio>punchline:mech_principle.png}}

==== Controls ====
  * Button controls
    * Mode
      * Press = Cycle 
        * Tap Tempo Classic
        * Tap Tempo Subdivision
        * Fixed 0.5s<->2s
        * Fixed 0.15s<->0.6s
        * Fixed 0.04<->0.16s
      * Hold = Reverb Setup
    * Tail On/Off
  * Center Ring Controls 
    * Delay control
      * Feedback
      * Time
      * Filter
    * Reverb control
      * Low RT60 : Zita model Low frequency RT60, cutoff frequency at 400Hz, 1 to 8 second long
      * High RT60 : Zita model High frequency RT60, cutoff frequency at 400Hz, 1 to 8 second long
      * Damping : High frequnecy damping 

==== Color Coding ====
{{drawio>punchline:color.png}}

==== Schematic and Interconnection ====

{{ :punchline:schema.png |}}

^ Signal ^ Pin ^ Functional Teensy Pin ^ Pedal Function ^
| Pot 1 | 18 | A0 | Feedback control |
| Pot 2 | 20 | A2 | Time control |
| Pot 3 | 21 | A3 | Filter control |
| Pot 4 | 26 | A8 | //Spare// |
| GND   | 1  | GND | GND |
| Punch | 2  | 0-RX1 | Punch Footswitch |
| Leds  | 3  | 1-TX1 | Led Output |
| Tap   | 4  | 2_Out | Tap Tempo Footswitch |
| Mode  | 5  | 3_LRCLK2 | Mode switch  |
| Tail  | 6  | 4_BCLK | Tail switch |
| On_Off | 7 | 5_IN2 | On Off Punch Footswitch |
==== Design ====
{{ :vibrate.zip |}}


==== Mode Tap Signature ====
Tempo display principle in Subdivision mode.
{{drawio>punchline:time_signature.png}}