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csound_tutorial.rst

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Csound

Csound is a sound and music computing system. Jird can output a Csound score corresponding to music written as ratios. If we have some Jird music in a text file music.txt, running

$ jird --csound music.txt

will produce a Csound score file music.sco.

Then if orchestra.orc is a Csound orchestra file, running

$ csound orchestra.orc music.sco

will render the music to a wav file.

In the generated Csound score the fourth p-field is the volume of the note and the fifth p-field is the frequency of the note in Hz. Below is a simple one instrument Csound orchestra file which uses the volume p4 and frequency p5 to set the amplitude and frequency for the vco2 Csound opcode:

.. literalinclude:: ../../music/orchestra.orc

NB the default note volume in Jird is 1, which if used as a Csound oscillator amplitude can give quite a loud output. In the example orchestra above the 0dbfs reference level is set to 5 to give a quieter output. For more information see the Csound get started page.