Here’s the code which uses this envelope to create a sound running through these frequencies. You won’t be surprised to learn that the top frequency of 1760 represents a high octave of the note A,Īnd the bottom frequency of 55 repesents a low octave of A. If you’ve been following along with the previous posts, The third envelope likewise ramps down from fifty to one.Īs you might guess, env2 is a pitch envelope.Ī common technique with risers in dance music is to build up from a low frequency to a high one, The first envelope starts with a level of zero, goes up, and then goes back down to zero again. The second one lasts a little over three seconds, The first one lasts three and a half seconds, Two of the envelopes use a linear curve the third is exponential. pairs (,, , ], \ lin ) // amp env var env2 = Env. With that in mind, let’s look at the envelope code. The envelope can have any number of points,Īnd you can also pass in a symbol or string to specify the type of curve you want the envelope to have. These pairs each represent the time and level of a point in the envelope. This code uses Env.pairs, which is the most flexible option. The Env object has many other methods, each of which generate different types of envelopes, In the previous two posts, we’ve seen Env.perc,Ī tight, quick envelope well-suited to drum synthesis. Likewise, startPan and endPan play the same roles they play in the synth hat code The callback function takes three keyword arguments -Īnd amp plays its usual role in defining the amplitude, or volume, of the function. Next, here’s the code: // riser SynthDef ( "riser", ).add Ĭreates a callback function and registers it under the name “riser.” This is the most complex sound in the beat, I’ve shown how a house beat in SuperCollider works.Ī buildup sound used to increase tension prior to a transition.
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