muse working with encoder as control

quantum/process_keycode/process_audio.h

@@ -1,6 +1,8 @@
 #ifndef PROCESS_AUDIO_H
 #define PROCESS_AUDIO_H
 
+float compute_freq_for_midi_note(uint8_t note);
+
 bool process_audio(uint16_t keycode, keyrecord_t *record);
 void process_audio_noteon(uint8_t note);
 void process_audio_noteoff(uint8_t note);
@@ -8,4 +10,4 @@ void process_audio_all_notes_off(void);
 
 void audio_on_user(void);
 
-#endif
+#endif