$Page Poly Synth
$TargetName Poly Synth

*Making a polyphonic synth*
The only differences between this instrument and its $Link monophonic version <Set:../../Mono Synth/Mono Synth.als> are that it is possible to set the amount of voices and there is no Glide parameter.

As you can see when you play the example clip, this version supports simultaneous, overlapping notes. Set the number of voices to 1 to hear how this sounds with a monophonic synth. The reason the Glide parameter is removed is that the glide would only be applied within one voice. With notes being distributed over voices, which note glides to which would be undetermined.

Poly-Synth.png

-> When changing the amount of voices of a [poly~] object, all voices will be set to their initial state, so afterwards we need to resend the parameter values to their inlets.
-> [line~] takes two values: the first is the value you want to output, the second is the time in ms it takes to reach that value. Here this is used to create a glide effect.
-> As a sound source, a saw waveform needs to be generated by [saw~] instead of the very similar [phasor~]. This is because [saw~] makes sure that no high frequencies fold over to the low end of the spectrum due to aliasing.

$Link Learn more about aliasing <https://en.wikipedia.org/wiki/Aliasing#Sampling_sinusoidal_functions>