Add ability to adjust sound effect volume.

public/locales/en-GB/app.json

@@ -144,6 +144,10 @@
   "room_auth_view_eula_caption": "By clicking \"Continue\", you agree to our <2>End User Licensing Agreement (EULA)</2>",
   "screenshare_button_label": "Share screen",
   "settings": {
+    "audio_tab": {
+      "effect_volume_label": "Sound effect volume",
+      "effect_volume_description": "Adjust the volume at which reactions and hand raised effects play"
+    },
     "developer_settings_label": "Developer Settings",
     "developer_settings_label_description": "Expose developer settings in the settings window.",
     "developer_tab_title": "Developer",

src/room/ReactionAudioRenderer.tsx

@@ -8,12 +8,17 @@ Please see LICENSE in the repository root for full details.
 import { ReactNode, useEffect, useRef } from "react";
 
 import { useReactions } from "../useReactions";
-import { playReactionsSound, useSetting } from "../settings/settings";
+import {
+  playReactionsSound,
+  effectSoundVolume as effectSoundVolumeSetting,
+  useSetting,
+} from "../settings/settings";
 import { GenericReaction, ReactionSet } from "../reactions";
 
 export function ReactionsAudioRenderer(): ReactNode {
   const { reactions } = useReactions();
   const [shouldPlay] = useSetting(playReactionsSound);
+  const [effectSoundVolume] = useSetting(effectSoundVolumeSetting);
   const audioElements = useRef<Record<string, HTMLAudioElement | null>>({});
 
   useEffect(() => {
@@ -30,6 +35,7 @@ export function ReactionsAudioRenderer(): ReactNode {
       const audioElement =
         audioElements.current[reactionName] ?? audioElements.current.generic;
       if (audioElement?.paused) {
+        audioElement.volume = effectSoundVolume;
         void audioElement.play();
       }
     }

src/settings/SettingsModal.module.css

@@ -16,3 +16,20 @@ Please see LICENSE in the repository root for full details.
 .fieldRowText {
   margin-bottom: 0;
 }
+
+.volumeSlider {
+  margin-top: var(--cpd-space-2x);
+}
+
+.volumeSlider > label {
+  margin-bottom: var(--cpd-space-1x);
+  display: block;
+}
+
+.volumeSlider > span {
+  max-width: 20em;
+}
+
+.volumeSlider > p {
+  color: var(--cpd-color-text-secondary);
+}

src/settings/SettingsModal.tsx

@@ -8,7 +8,7 @@ Please see LICENSE in the repository root for full details.
 import { ChangeEvent, FC, ReactNode, useCallback } from "react";
 import { Trans, useTranslation } from "react-i18next";
 import { MatrixClient } from "matrix-js-sdk/src/matrix";
-import { Dropdown, Text } from "@vector-im/compound-web";
+import { Dropdown, Separator, Text } from "@vector-im/compound-web";
 
 import { Modal } from "../Modal";
 import styles from "./SettingsModal.module.css";
@@ -28,9 +28,11 @@ import {
   developerSettingsTab as developerSettingsTabSetting,
   duplicateTiles as duplicateTilesSetting,
   useOptInAnalytics,
+  effectSoundVolume,
 } from "./settings";
 import { isFirefox } from "../Platform";
 import { PreferencesSettingsTab } from "./PreferencesSettingsTab";
+import { Slider } from "../Slider";
 
 type SettingsTab =
   | "audio"
@@ -116,6 +118,8 @@ export const SettingsModal: FC<Props> = ({
   const devices = useMediaDevices();
   useMediaDeviceNames(devices, open);
 
+  const [soundVolume, setSoundVolume] = useSetting(effectSoundVolume);
+
   const audioTab: Tab<SettingsTab> = {
     key: "audio",
     name: t("common.audio"),
@@ -127,6 +131,19 @@ export const SettingsModal: FC<Props> = ({
             devices.audioOutput,
             t("settings.speaker_device_selection_label"),
           )}
+        <Separator />
+        <div className={styles.volumeSlider}>
+          <label>{t("settings.audio_tab.effect_volume_label")}</label>
+          <p>{t("settings.audio_tab.effect_volume_description")}</p>
+          <Slider
+            label={t("video_tile.volume")}
+            value={soundVolume}
+            onValueChange={setSoundVolume}
+            min={0}
+            max={1}
+            step={0.01}
+          />
+        </div>
       </>
     ),
   };

src/settings/settings.ts

@@ -100,4 +100,6 @@ export const playReactionsSound = new Setting<boolean>(
   true,
 );
 
+export const effectSoundVolume = new Setting<number>("effects-sound-volume", 1);
+
 export const alwaysShowSelf = new Setting<boolean>("always-show-self", true);