From 6764f6c4a09f7f09eef4ab3893222cb0d3f899f4 Mon Sep 17 00:00:00 2001
From: codex <codex@example.local>
Date: Thu, 11 Jun 2026 01:34:07 +0200
Subject: [PATCH] Add microphone noise suppression toggle

---
 public/app.js     | 34 ++++++++++++++++++++++++++++++----
 public/index.html | 10 ++++++++--
 public/styles.css | 35 ++++++++++++++++++++++++++++++-----
 3 files changed, 68 insertions(+), 11 deletions(-)

diff --git a/public/app.js b/public/app.js
index ef9e438..18e433e 100644
--- a/public/app.js
+++ b/public/app.js
@@ -27,6 +27,7 @@ const shareButton = document.querySelector("#share-button");
 const announceButton = document.querySelector("#announce-button");
 const selfMicVolumeInput = document.querySelector("#self-mic-volume");
 const selfMicMeter = document.querySelector("#self-mic-meter");
+const noiseSuppressionInput = document.querySelector("#noise-suppression");
 const announcementDialog = document.querySelector("#announcement-dialog");
 const announcementForm = document.querySelector("#announcement-form");
 const announcementInput = document.querySelector("#announcement-input");
@@ -38,6 +39,7 @@ const clientIdStorageKey = "kkkmeet.clientId";
 const cameraStorageKey = "kkkmeet.cameraDeviceId";
 const micStorageKey = "kkkmeet.micDeviceId";
 const micVolumeStorageKey = "kkkmeet.selfMicVolume";
+const noiseSuppressionStorageKey = "kkkmeet.noiseSuppression";
 const watchHeightStorageKey = "kkkmeet.watchPanelHeight";
 const watchCollapsedStorageKey = "kkkmeet.watchPanelCollapsed";
 const rtcConfig = {
@@ -672,7 +674,7 @@ function mediaConstraints() {
   const micDeviceId = localStorage.getItem(micStorageKey);
 
   return {
-    audio: micDeviceId ? { deviceId: { exact: micDeviceId } } : true,
+    audio: audioConstraints(micDeviceId),
     video: {
       width: { ideal: 1280 },
       height: { ideal: 720 },
@@ -681,6 +683,17 @@ function mediaConstraints() {
   };
 }
 
+function savedNoiseSuppression() {
+  return localStorage.getItem(noiseSuppressionStorageKey) !== "false";
+}
+
+function audioConstraints(deviceId = "") {
+  return {
+    noiseSuppression: savedNoiseSuppression(),
+    ...(deviceId ? { deviceId: { exact: deviceId } } : {})
+  };
+}
+
 async function ensureLocalStream() {
   if (localStream) return localStream;
 
@@ -819,10 +832,12 @@ function outboundAudioTrack() {
 }
 
 async function replaceLocalTrack(kind, deviceId) {
-  if (!deviceId) return;
+  if (kind !== "audio" && !deviceId) return;
 
   if (!localStream) {
-    localStorage.setItem(kind === "video" ? cameraStorageKey : micStorageKey, deviceId);
+    if (deviceId) {
+      localStorage.setItem(kind === "video" ? cameraStorageKey : micStorageKey, deviceId);
+    }
     return;
   }
 
@@ -830,7 +845,7 @@ async function replaceLocalTrack(kind, deviceId) {
   const wasEnabled = oldTrack?.enabled ?? true;
   const constraints = kind === "video"
     ? { video: { deviceId: { exact: deviceId }, width: { ideal: 1280 }, height: { ideal: 720 } } }
-    : { audio: { deviceId: { exact: deviceId } } };
+    : { audio: audioConstraints(deviceId) };
   const stream = await navigator.mediaDevices.getUserMedia(constraints);
   const newTrack = stream.getTracks()[0];
   newTrack.enabled = wasEnabled;
@@ -1414,6 +1429,16 @@ selfMicVolumeInput.addEventListener("input", () => {
   setSelfMicVolume(selfMicVolumeInput.value);
 });
 
+noiseSuppressionInput.addEventListener("change", () => {
+  localStorage.setItem(noiseSuppressionStorageKey, String(noiseSuppressionInput.checked));
+  replaceLocalTrack("audio", micSelect.value).catch((error) => {
+    console.error(error);
+    noiseSuppressionInput.checked = !noiseSuppressionInput.checked;
+    localStorage.setItem(noiseSuppressionStorageKey, String(noiseSuppressionInput.checked));
+    setStatus("Could not change noise suppression.");
+  });
+});
+
 cameraSelect.addEventListener("change", () => {
   replaceLocalTrack("video", cameraSelect.value).catch((error) => {
     console.error(error);
@@ -1474,6 +1499,7 @@ shareButton.addEventListener("click", async () => {
 
 selfMicVolumeInput.value = String(savedSelfMicVolume());
 selfMicMeter.value = 0;
+noiseSuppressionInput.checked = savedNoiseSuppression();
 
 const savedName = localStorage.getItem(nameStorageKey);
 if (savedName) {
diff --git a/public/index.html b/public/index.html
index 8850c1d..4bc51d7 100644
--- a/public/index.html
+++ b/public/index.html
@@ -113,10 +113,16 @@
             <button id="announce-button" type="button">Announce</button>
             <div class="self-mic-control" aria-label="Local microphone volume">
               <label>
-                <span>Mic</span>
+                <span>Capture volume</span>
                 <input id="self-mic-volume" type="range" min="0" max="200" step="1" />
               </label>
-              <meter id="self-mic-meter" min="0" max="1" low="0.15" high="0.65" optimum="0.45"></meter>
+              <div class="self-mic-level">
+                <meter id="self-mic-meter" min="0" max="1" low="0.15" high="0.65" optimum="0.45"></meter>
+                <label class="noise-suppression-toggle">
+                  <input id="noise-suppression" type="checkbox" />
+                  <span>Noise suppression</span>
+                </label>
+              </div>
             </div>
           </div>
         </div>
diff --git a/public/styles.css b/public/styles.css
index 1b68a25..aeb6483 100644
--- a/public/styles.css
+++ b/public/styles.css
@@ -609,10 +609,10 @@ button[aria-pressed="false"] {
 
 .self-mic-control {
   display: grid;
-  grid-template-columns: minmax(120px, 160px) 56px;
+  grid-template-columns: minmax(120px, 160px) minmax(88px, 112px);
   align-items: end;
   gap: 8px;
-  min-width: 190px;
+  min-width: 238px;
 }
 
 .self-mic-control label {
@@ -624,18 +624,43 @@ button[aria-pressed="false"] {
   font-weight: 650;
 }
 
-.self-mic-control input {
+.self-mic-control input[type="range"] {
   width: 100%;
   height: 18px;
   padding: 0;
 }
 
-.self-mic-control meter {
-  width: 56px;
+.self-mic-level {
+  display: grid;
+  grid-template-rows: 18px 14px;
+  gap: 5px;
+}
+
+.self-mic-level meter {
+  width: 100%;
   height: 18px;
   align-self: end;
 }
 
+.noise-suppression-toggle {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  min-width: 0;
+  color: #aeb7c3;
+  font-size: 10px;
+  font-weight: 650;
+  white-space: nowrap;
+}
+
+.noise-suppression-toggle input {
+  width: 12px;
+  height: 12px;
+  margin: 0;
+  padding: 0;
+  flex: 0 0 auto;
+}
+
 .self-preview {
   position: relative;
   overflow: hidden;