1CLASS:: MeanTriggered 2summary:: Mean of recent values, triggered 3categories:: UGens>Filters 4 5DESCRIPTION:: 6Calculates the mean of the most recent length values, but only paying attention to values input while the trigger is greater than zero. One application of this is to calculate a running mean of values coming from FFT analysis. 7 8While trig<=0, the last-measured mean is held constant. 9 10The length argument is set at initialisation, and cannot be modulated. The length is directly reflected in the amount of real-time memory taken by this UGen, so please think carefully before using large values of length. Values in the low single- or double-figures are expected. 11 12 13EXAMPLES:: 14 15code:: 16s.boot; 17// Simple polling of mean values - you could do this without a UGen! 18x = {|val=1, t_trig=0| MeanTriggered.kr(val, t_trig, 3).poll(t_trig, "Mean of recent 3 values"); }.play; 19x.set(\val, 10.rand.postln, \t_trig, 1); // Execute this repeatedly 20 21x.free; 22 23// Using it as an audio filter - compare the sounds of these: 24x = {WhiteNoise.ar(0.1)}.play; 25x.free; 26x = {MeanTriggered.ar(WhiteNoise.ar(0.1), 1, 3)}.play; // Note that ".sum" would be more efficient here... 27x.free; 28x = {MeanTriggered.ar(WhiteNoise.ar(0.1), 1, 11)}.play; // Note that ".sum" would be more efficient here... 29x.free; 30:: 31 32