loop recording!

src/time.rs

@@ -1,16 +1,21 @@
 /// Number of data frames in a second.
+#[derive(Debug)]
 pub struct Hz(pub u32);
 
 /// One data frame.
+#[derive(Debug)]
 pub struct Frame(pub u32);
 
 /// One microsecond.
+#[derive(Debug)]
 pub struct Usec(pub u64);
 
 /// Beats per minute as `120000` = 120.000BPM
+#[derive(Debug)]
 pub struct Tempo(pub u64);
 
 /// Time signature: N/Mths per bar.
+#[derive(Debug)]
 pub struct Signature(pub u32, pub u32);
 
 /// NoteDuration in musical terms. Has definite usec value