Merge pull request #137 from NickCulbertson/AddStereoDelay

Added Stereo Delay Example

Cookbook/CookbookCommon/Sources/CookbookCommon/ContentView.swift

@@ -110,10 +110,11 @@ struct MasterView: View {
                             NavigationLink("Phase-Locked Vocoder", destination: PhaseLockedVocoderView())
                             NavigationLink("Playback Speed", destination: PlaybackSpeedView())
                             NavigationLink("Pitch Shifter", destination: PitchShifterView())
+                            NavigationLink("Stereo Delay", destination: StereoDelayView())
                             NavigationLink("String Resonator", destination: StringResonatorView())
-                            NavigationLink("Time / Pitch", destination: TimePitchView())
                         }
                         Group {
+                            NavigationLink("Time / Pitch", destination: TimePitchView())
 							NavigationLink("Transient Shaper", destination: TransientShaperView())
                             NavigationLink("Tremolo", destination: TremoloView())
                             NavigationLink("Variable Delay", destination: VariableDelayView())

Cookbook/CookbookCommon/Sources/CookbookCommon/Recipes/Effects/StereoDelay.swift

@@ -0,0 +1,52 @@
+import AudioKit
+import AudioKitEX
+import AudioKitUI
+import AVFoundation
+import DunneAudioKit
+import SoundpipeAudioKit
+import SwiftUI
+
+class StereoDelayConductor: ObservableObject, ProcessesPlayerInput {
+    let engine = AudioEngine()
+    let player = AudioPlayer()
+    let delay: StereoDelay
+    var dryWetMixer: DryWetMixer
+    let buffer: AVAudioPCMBuffer
+
+    init() {
+        buffer = Cookbook.sourceBuffer
+        player.buffer = buffer
+        player.isLooping = true
+
+        delay = StereoDelay(player)
+        dryWetMixer = DryWetMixer(player, delay)
+        engine.output = dryWetMixer
+    }
+}
+
+struct StereoDelayView: View {
+    @StateObject var conductor = StereoDelayConductor()
+
+    var body: some View {
+        VStack {
+            PlayerControls(conductor: conductor)
+            HStack {
+                ForEach(conductor.delay.parameters) {
+                    ParameterRow(param: $0)
+                }
+                ParameterRow(param: conductor.dryWetMixer.parameters[0])
+            }
+            DryWetMixView(dry: conductor.player,
+                          wet: conductor.delay,
+                          mix: conductor.dryWetMixer)
+        }
+        .padding()
+        .cookbookNavBarTitle("Stereo Delay")
+        .onAppear {
+            conductor.start()
+        }
+        .onDisappear {
+            conductor.stop()
+        }
+    }
+}