diff --git a/voicegardens/static/voicegardens.js b/voicegardens/static/voicegardens.js
index b79b562..8d23058 100644
--- a/voicegardens/static/voicegardens.js
+++ b/voicegardens/static/voicegardens.js
@@ -419,3 +419,14 @@ function windowResized() {
    **/
   resizeCanvas(windowWidth, windowHeight);
 }
+
+function getMaxPitch(spectrum) {
+  /**
+   * Get max pitch.
+   */
+  for (let x = spectrum.length - 1; x > 0; x--) {
+    if (spectrum[x] != 0) {
+      return x;
+    }
+  }
+}