RunningSum running sum over n frames

A running sum over a user specified number of samples, useful for running RMS power windowing.

*ar(in, numsamp)

in Input signal

numsamp How many samples to take the running sum over

(initialisation time only, not modulatable. default: 40)

// distorts of course - would need scaling

{ RunningSum.ar(SoundIn.ar) }.play

// Running Average over x samples

(

{

var x = 100;

RunningSum.ar(LFSaw.ar, x) * (x.reciprocal)

}.play

)

// RMS Power

(

{

var input, numsamp;

input = LFSaw.ar;

numsamp = 30;

(RunningSum.ar(input.squared, numsamp) / numsamp).sqrt

}.play

)

// shortcut in class

{ RunningSum.rms(SoundIn.ar) }.play

// play around

(

{

var input, numsamp, power;

numsamp = 500;

input = SoundIn.ar;

power = MouseX.kr(0.1, 4);

(RunningSum.ar(input ** power, numsamp)/numsamp) ** (power.reciprocal)

}.play

)