From a6439559e584a59ea0e3d8b073d638b4532e57bf Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Sun, 10 Mar 2019 15:04:45 +0100
Subject: [PATCH] tweaked pitch detection to smoothen low audio signals

---
 HISTORY.md     | 1 +
 src/objects.js | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index aa1f07f3..7d38f485 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -51,6 +51,7 @@
 * Objects, Blocks, Threads: added microphone note and pitch detection
 * Tweaked note detection to only change when the audio signal is strong enough
 * updated German translation for pitch-detection
+* tweaked pitch detection to smoothen low audio signals
 
 ### 2019-03-07
 * AudioComp lib: added block to set the microphone's buffer and fft sizes
diff --git a/src/objects.js b/src/objects.js
index 6a27acf4..48bfa500 100644
--- a/src/objects.js
+++ b/src/objects.js
@@ -9065,7 +9065,7 @@ Microphone.prototype.detectPitch = function (buf, sampleRate) {
     }
     rms = Math.sqrt(rms/SIZE);
     if (rms < 0.01)
-        return -1;
+        return this.pitch; // -1;
 
     lastCorrelation = 1;
     for (offset = this.MIN_SAMPLES; offset < MAX_SAMPLES; offset += 1) {
@@ -9095,7 +9095,7 @@ Microphone.prototype.detectPitch = function (buf, sampleRate) {
     if (best_correlation > 0.01) {
         return sampleRate / best_offset;
     }
-    return -1;
+    return this.pitch; // -1;
 };
 
 // CellMorph //////////////////////////////////////////////////////////