diff --git a/doc/classes/ProjectSettings.xml b/doc/classes/ProjectSettings.xml
index e55a605378c..68fdc51553f 100644
--- a/doc/classes/ProjectSettings.xml
+++ b/doc/classes/ProjectSettings.xml
@@ -266,6 +266,9 @@
The mixing rate used for audio (in Hz). In general, it's better to not touch this and leave it to the host operating system.
+
+ Safer override for [member audio/mix_rate] in the Web platform. Here [code]0[/code] means "let the browser choose" (since some browsers do not like forcing the mix rate).
+
Output latency in milliseconds for audio. Lower values will result in lower audio latency at the cost of increased CPU usage. Low values may result in audible cracking on slower hardware.
diff --git a/platform/javascript/audio_driver_javascript.cpp b/platform/javascript/audio_driver_javascript.cpp
index c65d9425e1d..1b685423840 100644
--- a/platform/javascript/audio_driver_javascript.cpp
+++ b/platform/javascript/audio_driver_javascript.cpp
@@ -108,7 +108,7 @@ Error AudioDriverJavaScript::init() {
mix_rate = GLOBAL_GET("audio/mix_rate");
int latency = GLOBAL_GET("audio/output_latency");
- channel_count = godot_audio_init(mix_rate, latency, &_state_change_callback, &_latency_update_callback);
+ channel_count = godot_audio_init(&mix_rate, latency, &_state_change_callback, &_latency_update_callback);
buffer_length = closest_power_of_2((latency * mix_rate / 1000));
#ifndef NO_THREADS
node = memnew(WorkletNode);
diff --git a/platform/javascript/godot_audio.h b/platform/javascript/godot_audio.h
index 54fc8fa3b58..de8f046bbd6 100644
--- a/platform/javascript/godot_audio.h
+++ b/platform/javascript/godot_audio.h
@@ -38,7 +38,7 @@ extern "C" {
#include "stddef.h"
extern int godot_audio_is_available();
-extern int godot_audio_init(int p_mix_rate, int p_latency, void (*_state_cb)(int), void (*_latency_cb)(float));
+extern int godot_audio_init(int *p_mix_rate, int p_latency, void (*_state_cb)(int), void (*_latency_cb)(float));
extern void godot_audio_resume();
extern int godot_audio_capture_start();
diff --git a/platform/javascript/js/libs/library_godot_audio.js b/platform/javascript/js/libs/library_godot_audio.js
index 45c3a3fe2e9..c9dae1a7af3 100644
--- a/platform/javascript/js/libs/library_godot_audio.js
+++ b/platform/javascript/js/libs/library_godot_audio.js
@@ -37,10 +37,14 @@ const GodotAudio = {
interval: 0,
init: function (mix_rate, latency, onstatechange, onlatencyupdate) {
- const ctx = new (window.AudioContext || window.webkitAudioContext)({
- sampleRate: mix_rate,
- // latencyHint: latency / 1000 // Do not specify, leave 'interactive' for good performance.
- });
+ const opts = {};
+ // If mix_rate is 0, let the browser choose.
+ if (mix_rate) {
+ opts['sampleRate'] = mix_rate;
+ }
+ // Do not specify, leave 'interactive' for good performance.
+ // opts['latencyHint'] = latency / 1000;
+ const ctx = new (window.AudioContext || window.webkitAudioContext)(opts);
GodotAudio.ctx = ctx;
ctx.onstatechange = function () {
let state = 0;
@@ -159,7 +163,10 @@ const GodotAudio = {
godot_audio_init: function (p_mix_rate, p_latency, p_state_change, p_latency_update) {
const statechange = GodotRuntime.get_func(p_state_change);
const latencyupdate = GodotRuntime.get_func(p_latency_update);
- return GodotAudio.init(p_mix_rate, p_latency, statechange, latencyupdate);
+ const mix_rate = GodotRuntime.getHeapValue(p_mix_rate, 'i32');
+ const channels = GodotAudio.init(mix_rate, p_latency, statechange, latencyupdate);
+ GodotRuntime.setHeapValue(p_mix_rate, GodotAudio.ctx.sampleRate, 'i32');
+ return channels;
},
godot_audio_resume__sig: 'v',
diff --git a/servers/audio_server.cpp b/servers/audio_server.cpp
index 6df8cd1d14f..a20a5d042e6 100644
--- a/servers/audio_server.cpp
+++ b/servers/audio_server.cpp
@@ -189,6 +189,7 @@ int AudioDriverManager::get_driver_count() {
void AudioDriverManager::initialize(int p_driver) {
GLOBAL_DEF_RST("audio/enable_audio_input", false);
GLOBAL_DEF_RST("audio/mix_rate", DEFAULT_MIX_RATE);
+ GLOBAL_DEF_RST("audio/mix_rate.web", 0); // Safer default output_latency for web (use browser default).
GLOBAL_DEF_RST("audio/output_latency", DEFAULT_OUTPUT_LATENCY);
GLOBAL_DEF_RST("audio/output_latency.web", 50); // Safer default output_latency for web.