[readme] explain robotuna

README.md

@@ -153,9 +153,21 @@ the only way to reset the pattern is to reset the plugin. if your daw has a way
 
 ### robotuna
 
-WIP automatic pitch correction and pitch shifting. the intention is to use it to make hyperpop-style high-pitched vocals
+automatic pitch correction and pitch shifting. the intention is to use it to make hyperpop-style high-pitched vocals
 
-it kinda works, but not really. since the pitch shifting part is too slow using a phase vocoder, it doesn't run in real time, and there's some clicking noises. i need to rework that whole thing so it can run in real time. i'll probably change the whole thing completely instead of optimizing it cause yeah
+params:
+- `manual/snap`: decides whether to listen to midi (if under 0.5) or to snap to the closest semitone (if over or equal 0.5)
+- `frequency gain`: added gain on top of the correction
+
+robotuna will do pitch detection on the input, and then shift the pitch to match the expected one. the expected pitch can be either: the midi note, if set to manual; or the closest semitone, if set to snap
+
+note: snap mode ignores the midi input
+
+after that, the pitch will be shifted by `frequency gain`
+
+for example:
+- setting to manual mode, setting gain to `2.0`, and not sending any midi notes, will make the audio be one octave up
+- setting to snap mode, gain to `1.0`, will work as a traditional pitch corrector
 
 ### hysteria
 

crates/robotuna/src/lib.rs

@@ -8,7 +8,7 @@ use serde::{Deserialize, Serialize};
 use utils::logs::*;
 use utils::pitch::*;
 
-const DET_LEN: usize = 2 << 8;
+const DET_LEN: usize = 128;
 
 baseplug::model! {
     #[derive(Debug, Serialize, Deserialize)]