hdf-0.11: Help/UGen/Oscillator/lf_pulse.help.lhs
> import Sound.DF
> do { o1 <- fmap (\x -> x * 200.0 + 200.0) (lf_pulse 3.0 0.0 0.3)
> ; o2 <- fmap (\x -> x * 0.1) (lf_pulse o1 0.0 0.2)
> ; audition [] (out1 o2) }
> import Sound.DF
> do { o1 <- fmap (\x -> x * 200.0 + 200.0) (lf_pulse 3.0 0.0 0.3)
> ; o2 <- fmap (\x -> x * 0.1) (lf_pulse o1 0.0 0.2)
> ; audition [] (out1 o2) }