Update Feedback for Volume Change

DynamicIsland/Localizable.xcstrings

@@ -3382,6 +3382,10 @@
         }
       }
     },
+    "Audio feedback" : {
+      "comment" : "A section header that lists audio feedback settings.",
+      "isCommentAutoGenerated" : true
+    },
     "Authorize" : {
       "comment" : "A button that authorizes an app extension.",
       "isCommentAutoGenerated" : true
@@ -15194,6 +15198,10 @@
     },
     "Pinned Items" : {
 
+    },
+    "Plays the supplied feedback clip whenever you press the hardware volume keys." : {
+      "comment" : "A help text describing the audio feedback feature.",
+      "isCommentAutoGenerated" : true
     },
     "Please configure your API key for the selected AI provider in model settings." : {
 
@@ -16032,6 +16040,9 @@
           }
         }
       }
+    },
+    "Requires Accessibility permission so Dynamic Island can intercept the hardware volume keys." : {
+
     },
     "Reset" : {
       "localizations" : {

DynamicIsland/components/Settings/SettingsView.swift

@@ -1859,6 +1859,18 @@ struct HUD: View {
                 }
             }
 
+            Section {
+                Defaults.Toggle("Play feedback when volume is changed", key: .playVolumeChangeFeedback)
+                    .settingsHighlight(id: highlightID("Play feedback when volume is changed"))
+                    .help("Plays the supplied feedback clip whenever you press the hardware volume keys.")
+            } header: {
+                Text("Audio feedback")
+            } footer: {
+                Text("Requires Accessibility permission so Dynamic Island can intercept the hardware volume keys.")
+                    .foregroundStyle(.secondary)
+                    .font(.caption)
+            }
+
             Section {
                 Defaults.Toggle("Color-coded volume display", key: .useColorCodedVolumeDisplay)
                     .disabled(colorCodingDisabled)

DynamicIsland/managers/SystemChangesObserver.swift

@@ -2,6 +2,7 @@ import Foundation
 import CoreGraphics
 import Defaults
 import AppKit
+import AVFoundation
 
 final class SystemChangesObserver: MediaKeyInterceptorDelegate {
     private weak var coordinator: DynamicIslandViewCoordinator?
@@ -9,6 +10,7 @@ final class SystemChangesObserver: MediaKeyInterceptorDelegate {
     private let brightnessController = SystemBrightnessController.shared
     private let keyboardBacklightController = SystemKeyboardBacklightController.shared
     private let mediaKeyInterceptor = MediaKeyInterceptor.shared
+    private let volumeFeedbackPlayer = VolumeFeedbackPlayer.shared
 
     private static let headsetIconSymbols: Set<String> = [
         "airpods",
@@ -140,6 +142,7 @@ final class SystemChangesObserver: MediaKeyInterceptorDelegate {
         let baseStep = stepSize(for: step, base: standardVolumeStep)
         let delta = direction == .up ? baseStep : -baseStep
         volumeController.adjust(by: delta)
+        volumeFeedbackPlayer.playIfNeeded()
     }
 
     func mediaKeyInterceptorDidToggleMute(_ interceptor: MediaKeyInterceptor) {
@@ -325,4 +328,53 @@ private extension SystemChangesObserver {
     }
 }
 
+private final class VolumeFeedbackPlayer {
+    static let shared = VolumeFeedbackPlayer()
+
+    private let queue = DispatchQueue(label: "com.dynamicisland.volume-feedback-player")
+    private var player: AVAudioPlayer?
+    private var lastPlayDate: Date = .distantPast
+    private let minimumInterval: TimeInterval = 0.08
+    private var didLogMissingAsset = false
+
+    private init() {}
+
+    func playIfNeeded() {
+        guard Defaults[.playVolumeChangeFeedback] else { return }
+        queue.async { [weak self] in
+            guard let self else { return }
+            let now = Date()
+            guard now.timeIntervalSince(self.lastPlayDate) >= self.minimumInterval else { return }
+            self.lastPlayDate = now
+            self.preparePlayerIfNeeded()
+            guard let player = self.player else { return }
+            player.currentTime = 0
+            player.play()
+        }
+    }
+
+    private func preparePlayerIfNeeded() {
+        if player != nil { return }
+        guard let url = Bundle.main.url(forResource: "audio-feedback", withExtension: "m4a") else {
+            if !didLogMissingAsset {
+                NSLog("⚠️ audio-feedback.m4a is missing from the app bundle; volume feedback disabled.")
+                didLogMissingAsset = true
+            }
+            return
+        }
+
+        do {
+            let audioPlayer = try AVAudioPlayer(contentsOf: url)
+            audioPlayer.volume = 1
+            audioPlayer.prepareToPlay()
+            player = audioPlayer
+        } catch {
+            if !didLogMissingAsset {
+                NSLog("⚠️ Failed to initialize volume feedback player: \(error.localizedDescription)")
+                didLogMissingAsset = true
+            }
+        }
+    }
+}
+
 

DynamicIsland/models/Constants.swift

@@ -871,6 +871,7 @@ extension Defaults.Keys {
     static let enableBrightnessHUD = Key<Bool>("enableBrightnessHUD", default: true)
     static let enableKeyboardBacklightHUD = Key<Bool>("enableKeyboardBacklightHUD", default: true)
     static let systemHUDSensitivity = Key<Int>("systemHUDSensitivity", default: 5)
+    static let playVolumeChangeFeedback = Key<Bool>("playVolumeChangeFeedback", default: false)
     
     // MARK: Custom OSD Window Feature
     static let enableCustomOSD = Key<Bool>("enableCustomOSD", default: false)