The star suffixes (==**,/=**,<**,<=**,>**,>=**) are because the result of the
operators is not of type Bool, as is required by the signature for the
classes Eq and Ord.

> import Sound.SC3 {- hsc3 -}

> g_01 =
>     let o = sinOsc KR 1 0
>         t = [o >** 0
>             ,o >=** 0
>             ,o <** 0
>             ,o <=** 0
>             ,o ==** 0
>             ,(o <** 0.001) * (o >** (-0.001))]
>         f = [220, 330, 440, 550, 660, 770]
>         p = envPerc 0.01 1
>         e = envGen KR (mce t) 0.1 0 1 DoNothing p
>     in mix (sinOsc AR (mce f) 0 * e)