From 4ae2e550aae29978ad4c67ff2a015d929d6ede1c Mon Sep 17 00:00:00 2001
From: Wyatt Gillette <jefferydeaver2010@gmail.com>
Date: Tue, 13 May 2025 19:23:11 +0200
Subject: [PATCH 1/3] LowPassFilter: add no-args constructor

---
 .../src/main/java/com/jme3/audio/LowPassFilter.java  | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java b/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
index 518d1c2af8..4fa8baede1 100644
--- a/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
+++ b/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
@@ -49,13 +49,21 @@ public class LowPassFilter extends Filter {
     /**
      * The overall volume scaling of the filtered sound
      */
-    protected float volume;
+    protected float volume = 1.0f;
     /**
      * The volume scaling of the high frequencies allowed to pass through. Valid values range
      * from 0.0 to 1.0, where 0.0 completely eliminates high frequencies and 1.0 lets them pass
      * through unchanged.
      */
-    protected float highFreqVolume;
+    protected float highFreqVolume = 1.0f;
+
+    /**
+     * Constructs a low-pass filter with default settings.
+     * Required for jME deserialization.
+     */
+    public LowPassFilter() {
+        super();
+    }
 
     /**
      * Constructs a low-pass filter.

From c3c6ba47b729a76e390aaa237c2ece3c5ed4fb07 Mon Sep 17 00:00:00 2001
From: Wyatt Gillette <jefferydeaver2010@gmail.com>
Date: Tue, 13 May 2025 19:24:06 +0200
Subject: [PATCH 2/3] Add files via upload

---
 .../java/com/jme3/audio/AudioFilterTest.java  | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 jme3-core/src/test/java/com/jme3/audio/AudioFilterTest.java

diff --git a/jme3-core/src/test/java/com/jme3/audio/AudioFilterTest.java b/jme3-core/src/test/java/com/jme3/audio/AudioFilterTest.java
new file mode 100644
index 0000000000..ad9016b4c0
--- /dev/null
+++ b/jme3-core/src/test/java/com/jme3/audio/AudioFilterTest.java
@@ -0,0 +1,31 @@
+package com.jme3.audio;
+
+import com.jme3.asset.AssetManager;
+import com.jme3.asset.DesktopAssetManager;
+import com.jme3.export.binary.BinaryExporter;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Automated tests for the Filter class.
+ *
+ * @author capdevon
+ */
+public class AudioFilterTest {
+
+    /**
+     * Tests serialization and de-serialization of a {@code LowPassFilter}.
+     */
+    @Test
+    public void testSaveAndLoad() {
+        AssetManager assetManager = new DesktopAssetManager(true);
+
+        LowPassFilter f = new LowPassFilter(.5f, .5f);
+        LowPassFilter copy = BinaryExporter.saveAndLoad(assetManager, f);
+
+        float delta = 0.001f;
+        Assert.assertEquals(f.getVolume(), copy.getVolume(), delta);
+        Assert.assertEquals(f.getHighFreqVolume(), copy.getHighFreqVolume(), delta);
+    }
+
+}

From 3eebd56efdcf1077cc188c354e600061db2c5ec6 Mon Sep 17 00:00:00 2001
From: Wyatt Gillette <jefferydeaver2010@gmail.com>
Date: Tue, 13 May 2025 20:26:07 +0200
Subject: [PATCH 3/3] LowPassFilter: correct default values for read/write
 fields

---
 jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java b/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
index 4fa8baede1..8c70490ba6 100644
--- a/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
+++ b/jme3-core/src/main/java/com/jme3/audio/LowPassFilter.java
@@ -136,16 +136,16 @@ public void setVolume(float volume) {
     public void write(JmeExporter ex) throws IOException {
         super.write(ex);
         OutputCapsule oc = ex.getCapsule(this);
-        oc.write(volume, "volume", 0);
-        oc.write(highFreqVolume, "hf_volume", 0);
+        oc.write(volume, "volume", 1f);
+        oc.write(highFreqVolume, "hf_volume", 1f);
     }
 
     @Override
     public void read(JmeImporter im) throws IOException {
         super.read(im);
         InputCapsule ic = im.getCapsule(this);
-        volume = ic.readFloat("volume", 0);
-        highFreqVolume = ic.readFloat("hf_volume", 0);
+        volume = ic.readFloat("volume", 1f);
+        highFreqVolume = ic.readFloat("hf_volume", 1f);
     }
 
     /**