24 lines
No EOL
465 B
Racket
24 lines
No EOL
465 B
Racket
#lang racket
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(require oregano)
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(define my-sin (preset-instrument "sin-inst"))
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(param-slider "change frequency" 300 1000 400
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(lambda (val)
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(set-inst-param my-sin "freq" val)))
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(param-check-box "synth on" #f
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(lambda (v)
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(if v
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(inst-on my-sin)
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(inst-off my-sin))))
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(show-gui)
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;; example:
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(sleep 0.5)
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; (note-on my-sin 500 1)
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; (note-off my-sin) |