> import Sound.SC3 {- hsc3 -}
> import qualified Sound.SC3.UGen.Bindings.DB.External as X {- hsc3 -}

> g_01 =
>   let s = pulse AR 0.1 0.001 * 0.1
>       fr = 50 + 5000 * sinOsc AR 50 0
>       dt = 0.5
>   in X.complexRes s fr dt