Fix/piano example (#153)

* feat: declared macros in CMakeLists.txt

* feat: implemented VectorMath

* feat: introduce VectorMath methods in audio processing functions

* refactor: small refactoring in VectorMath.cpp

* refactor: yarn format

* fix: removed nodes disconnect and added closing context

---------

Co-authored-by: Maciej Makowski <maciej.makowski@swmansion.com>

Author: maciejmakowski2003

apps/common-app/src/examples/Piano/Piano.tsx

@@ -30,6 +30,10 @@ const Piano: FC = () => {
     });
 
     notesRef.current = newNotes as Record<KeyName, PianoNote>;
+
+    return () => {
+      audioContextRef.current?.close();
+    };
   }, []);
 
   return (

apps/common-app/src/examples/Piano/PianoNote.tsx

@@ -49,9 +49,6 @@ class PianoNote {
 
     this.oscillator.stop(tNow + 0.1);
 
-    this.gain.disconnect(this.audioContext.destination);
-    this.oscillator.disconnect(this.gain);
-
     this.oscillator = null;
     this.gain = null;
   }

apps/common-app/src/examples/SharedUtils/soundEngines/HiHat.ts

@@ -41,7 +41,7 @@ class HiHat implements SoundEngine {
       gain.gain.exponentialRampToValueAtTime(this.volume * 0.33, time + 0.03);
       gain.gain.exponentialRampToValueAtTime(this.volume * 0.0001, time + 0.3);
       gain.gain.setValueAtTime(0, time + 0.3 + 0.001);
-      //number of inputs of filter is 1 on android- check it
+
       oscillator.connect(bandpassFilter);
       bandpassFilter.connect(highpassFilter);
       highpassFilter.connect(gain);