From 7c94ea53cba951b2365b5901d7214d7418adb306 Mon Sep 17 00:00:00 2001
From: Thomas Weber <muffin@muffin.ink>
Date: Sat, 18 Oct 2025 14:45:51 -0500
Subject: [PATCH] Restrict max sample rate

---
 src/AudioEngine.js | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/AudioEngine.js b/src/AudioEngine.js
index fb219ab4..fb202310 100644
--- a/src/AudioEngine.js
+++ b/src/AudioEngine.js
@@ -42,7 +42,25 @@ const makeAudioContext = () => {
     if (!AudioContext) {
         throw new Error('Browser does not support AudioContext');
     }
-    return new AudioContext();
+
+    const audioContextWithDefaultRate = new AudioContext();
+
+    // By default, browsers will use the sample rate of the output device. For people who have this
+    // configured very high, this can result in extreme increases in memory usage because we
+    // pre-decode all sounds into buffers at this sample rate.
+    if (audioContextWithDefaultRate.sampleRate > 48000) {
+        try {
+            return new AudioContext({
+                sampleRate: 48000
+            });
+        } catch (e) {
+            // If browser can't support our requested rate, we'll have to continue with whatever
+            // rate we got earlier, even if it's not going to be ideal.
+            return audioContextWithDefaultRate;
+        }
+    }
+
+    return audioContextWithDefaultRate;
 };
 
 /**