vibrato.help.lhs

    > Sound.SC3.UGen.Help.viewSC3Help "Vibrato"
    > Sound.SC3.UGen.DB.ugenSummary "Vibrato"

> import Sound.SC3 {- hsc3 -}

vibrato at 1 Hz, note the use of DC.ar

    {SinOsc.ar(Vibrato.ar(DC.ar(400.0),1,0.02))*0.1}.play

> g_01 =
>     let v = vibrato 'α' AR (dc AR 400) 1 0.02 0 0 0.04 0.1 0
>     in sinOsc AR v 0 * 0.1

compare: k-rate freq input can be a constant

    {SinOsc.ar(Vibrato.kr(400.0,1,0.02))}.play

> g_02 =
>     let v = vibrato 'α' KR 400 1 0.02 0 0 0.04 0.1 0
>     in sinOsc AR v 0 * 0.1

control rate and rateVariation

    {x=MouseX.kr(2.0,100.0)
    ;y=MouseY.kr(0.0,1.0)
    ;v=Vibrato.ar(DC.ar(400.0),x,0.1,1.0,1.0,y,0.1)
    ;SinOsc.ar(v)}.play

> g_03 =
>     let x = mouseX KR 2 100 Linear 0.2
>         y = mouseY KR 0 1 Linear 0.2
>         v = vibrato 'α' AR (dc AR 400) x 0.1 1 1 y 0.1 0
>     in sinOsc AR v 0 * 0.1

control depth and depthVariation

    {n=LFNoise1.kr(1,3,7)
    ;x=MouseX.kr(0.0,1.0)
    ;y=MouseY.kr(0.0,1.0)
    ;v=Vibrato.ar(DC.ar(400.0),n,x,1.0,1.0,y,0.1)
    ;SinOsc.ar(v)}.play

> g_04 =
>     let n = lfNoise1 'α' KR 1 * 3 + 7
>         x = mouseX KR 0 1 Linear 0.2
>         y = mouseY KR 0 1 Linear 0.2
>         v = vibrato 'β' AR (dc AR 400) n x 1 1 y 0.1 0
>     in sinOsc AR v 0 * 0.1