11_Test_functions

Functions and .scope messages

An easy way to audition synthesis processes is to test them within a function. To do this, append a .scope or a .play message to a function. The .scope message, which works only with the internal server, displays a visual representation of a sound wave.

////////////////////////////////////////////////////////////////////////////////////////////////////

Boot (turn on) the servers.boot;

Run this example, and look at the scope window.// test a synthesis process in a function ( { SinOsc.ar([440.067, 441.013], 0, 1) * SinOsc.ar([111, 109], 0, 0.2) }.scope; )

////////////////////////////////////////////////////////////////////////////////////////////////////

Code can be transfered from a test function into a synthdef. In the following example, the code from the function (above) is the second argument to the Out ugen.( SynthDef("ringMod", { Out.ar( 0, SinOsc.ar([440.067, 441.013], 0, 1) * SinOsc.ar([111, 109], 0, 0.2) ) }).add; ) Synth("ringMod")

Multi-channel expansion

Expand a ugen to two channels with an array in any of the argument (control) slots.{ Saw.ar([500, 933], 0.1) }.scope;

Another (longer) way to write the same thing is{ [ Saw.ar(500, 0.1), Saw.ar(933, 0.1)] }.scope;

Expand a ugen to three channels by adding values to the array.{ Saw.ar([500, 933, 2033], 0.1) }.scope; // 4 channels { Saw.ar([500, 933, 2033, 895], 0.1) }.scope;

////////////////////////////////////////////////////////////////////////////////////////////////////

go to 12_UnaryOp_synthesis