| Merge of faust_exp * faust_exp
+class type rate_type =
+ object
+ method to_int : int
+ method to_float : float
+ method equal : rate_type -> bool
+ method mul : int -> rate_type
+ method div : int -> rate_type
+ end
+
class type signal_type =
object
- method frequency : int
+ method frequency : rate_type
method at : time -> value_type
method add_memory : int -> unit
method add : signal_type -> signal_type