class:: Dseries summary:: Demand rate arithmetic series UGen. related:: Classes/Demand, Classes/Dgeom, Classes/Duty, Classes/TDuty categories:: UGens>Demand Description:: Demand rate arithmetic series UGen. See link::Classes/Pseries:: for structurally related equivalent. classmethods:: method::new argument::start Start value. Can be a number or any other UGen. argument::step Step value. Can be a number or any other UGen. argument::length Number of values to create. Can be a number or any other UGen. Examples:: code:: ( { var a, freq, trig; a = Dseries(0, 1, 15); trig = Impulse.kr(MouseX.kr(1, 40, 1)); freq = Demand.kr(trig, 0, a) * 30 + 340; SinOsc.ar(freq) * 0.1 }.play; ) ( { var a, freq, trig; a = Dseries(0, 1, inf); trig = Dust.kr(MouseX.kr(1, 40, 1)); freq = Demand.kr(trig, 0, a) % 15 * 30 + 340; SinOsc.ar(freq) * 0.1 }.play; ) ::