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==The XO as an audio signal generator==
 
==The XO as an audio signal generator==
The doorbell and remote doorbell showed how to generate an audio tone in Turtle Art, the following code in Pippy can also generate a tone (from Guzman Trinidad)
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The doorbell, remote doorbell and Teletype show how to generate an audio tone in Turtle Art, the following code in the Pippy Activity can generate a tone of variable duration (from Guzman Trinidad).
    
  import pippy
 
  import pippy
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