From 84bc43dbfc19497839bb0cee0bbace2f4eb8cb2f Mon Sep 17 00:00:00 2001
From: KevinGrajeda <yokevin20@gmail.com>
Date: Sat, 18 Mar 2023 16:51:41 -0600
Subject: [PATCH 1/2] add setType() to PolySynth

---
 src/polysynth.js | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/polysynth.js b/src/polysynth.js
index 806ad8ed..18bf504c 100644
--- a/src/polysynth.js
+++ b/src/polysynth.js
@@ -210,6 +210,29 @@ class PolySynth {
     });
   }
 
+  /**
+   *  Set type to 'sine', 'triangle', 'sawtooth' or 'square'.
+   *  If the current synthVoice is not MonoSynth, it
+   *  replaces the current voice with MonoSynth.
+   *  @method  setType
+   *  @for p5.PolySynth
+   *  @param {String} type 'sine', 'triangle', 'sawtooth' or 'square'.
+   */
+  setType(type) {
+    if (!(this.audiovoices[0] instanceof p5.MonoSynth)) {
+      console.warn(
+        '`PolySynth.setType()` replaces the synthVoice with `MonoSynth`'
+      );
+      this.AudioVoice = p5.MonoSynth;
+      this.audiovoices = [];
+      this._allocateVoices();
+    }
+
+    this.audiovoices.forEach((voice) => {
+      voice.setType(type);
+    });
+  }
+
   /**
    *  Trigger the Attack, and Decay portion of a MonoSynth.
    *  Similar to holding down a key on a piano, but it will

From 0130db75e40d745670f541d571d9ca6f0b1c4199 Mon Sep 17 00:00:00 2001
From: KevinGrajeda <yokevin20@gmail.com>
Date: Sat, 18 Mar 2023 17:01:47 -0600
Subject: [PATCH 2/2] add test for PolySynth.setType()

---
 test/tests/p5.PolySynth.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/tests/p5.PolySynth.js b/test/tests/p5.PolySynth.js
index b763f4a2..f9f62ef8 100644
--- a/test/tests/p5.PolySynth.js
+++ b/test/tests/p5.PolySynth.js
@@ -57,6 +57,14 @@ describe('p5.PolySynth', function () {
         expect(monoSynth.env).to.have.property('control');
       }
     });
+    it('can change synthType', function () {
+      let polySynth = new p5.PolySynth(p5.MonoSynth, 6);
+      polySynth.setType('square');
+      for (let i = 0; i < 6; i++) {
+        const monoSynth = polySynth.audiovoices[i];
+        expect(monoSynth.getType()).to.equal('square');
+      }
+    });
 
     it('can trigger a note attack at the present moment with only one argument', function (done) {
       let polySynth = new p5.PolySynth(p5.MonoSynth, 3);