Chris McCormick

Speccy is a small utililty I built for live-coding chiptune music in the browser with Clojurescript.

You can copy sounds from sfxr.me and paste them in as synth definitions, using code to modify any parameter over time, or start from scratch by building a synth up from basic parameters.

You can paste the following examples into the online editor to try it out:

; blippy synth
(sfxr {:wave :square :env/decay 0.1 :note #(at % 32 {0 24 3 29 7 60 12 52 19 29 28 52})})

; donk bass
(sfxr "1111128F2i1nMgXwxZ1HMniZX45ZzoZaM9WBtcQMiZDBbD7rvq6mBCATySSmW7xJabfyy9xfh2aeeB1JPr4b7vKfXcZDbWJ7aMPbg45gBKUxMijaTNnvb2pw"
      {:note #(or
        (at % 57
          {5 35
           27 34})
        (at % 32
           {0 24
            6 29
            18 21
            26 12}))})

; hi hat
(sfxr {:wave :noise
       :env/sustain 0.05
       :env/decay 0.05
       :vol #(sq % [0.3 0.1 0.2 0.1])})

; snare
(sfxr "7BMHBGCKUHWi1mbucW62sVAYvTeotkd4qSZKy91kof8rASWsAx1ioV4EjrXb9AHhuKEprWr2D4u4YHJpYEzWrJd8iitvr23br2DCGu7zMqFmPyoSFtUEqiM64"
      {:note 36
       :vol #(at % 16
         {4 0.5
          12 0.5})})

The full source code and documentation is available at GitHub.

Enjoy!

I'm playing a show tonight at the local science education centre, Scitech, for their adult event, After Dark.

I'll play live electronic music using some Gameboy, Commodore 64, and Raspberry Pi gear and algorave Pd patches. I'll also give a little talk about the tech and how it works.