Merge pull request #175 from NickCulbertson/Vocoder

Vocoder & Talkbox recipes added

Author: NickCulbertson

Cookbook/CookbookCommon/Package.swift

@@ -13,7 +13,7 @@ let package = Package(
         .package(url: "https://github.com/AudioKit/Controls",          from: "1.0.0"),
         .package(url: "https://github.com/AudioKit/DunneAudioKit",     from: "5.6.0"),
         .package(url: "https://github.com/AudioKit/Keyboard",          from: "1.3.0"),
-        .package(url: "https://github.com/AudioKit/SoundpipeAudioKit", from: "5.6.0"),
+        .package(url: "https://github.com/AudioKit/SoundpipeAudioKit", from: "5.7.1"),
         .package(url: "https://github.com/AudioKit/SporthAudioKit",    from: "5.5.0"),
         .package(url: "https://github.com/AudioKit/STKAudioKit",       from: "5.5.0"),
         .package(url: "https://github.com/AudioKit/Tonic",             from: "1.0.0"),

Cookbook/CookbookCommon/Sources/CookbookCommon/ContentView.swift

@@ -103,10 +103,12 @@ struct MasterView: View {
                             NavigationLink("String Resonator", destination: StringResonatorView())
                         }
                         Group {
+                            NavigationLink("Talkbox", destination: TalkboxView())
                             NavigationLink("Time / Pitch", destination: TimePitchView())
                             NavigationLink("Transient Shaper", destination: TransientShaperView())
                             NavigationLink("Tremolo", destination: TremoloView())
                             NavigationLink("Variable Delay", destination: VariableDelayView())
+                            NavigationLink("Vocoder", destination: VocoderView())
                         }
                     }
                 }

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

@@ -0,0 +1,67 @@
+import AudioKit
+import AudioKitEX
+import AudioKitUI
+import AVFoundation
+import SoundpipeAudioKit
+import SwiftUI
+import Tonic
+
+class TalkboxConductor: ObservableObject, ProcessesPlayerInput {
+    let engine = AudioEngine()
+    let player = AudioPlayer()
+    let talkbox: Talkbox
+    let buffer: AVAudioPCMBuffer
+    var osc = DynamicOscillator()
+
+    func noteOn(pitch: Pitch, point _: CGPoint) {
+        isPlaying = true
+        osc.frequency = AUValue(pitch.midiNoteNumber).midiNoteToFrequency()
+    }
+
+    func noteOff(pitch _: Pitch) {
+        isPlaying = false
+    }
+
+    @Published var isPlaying: Bool = false {
+        didSet { isPlaying ? osc.start() : osc.stop() }
+    }
+
+    init() {
+        buffer = Cookbook.sourceBuffer
+        player.buffer = buffer
+        player.isLooping = true
+        osc.amplitude = 0.5
+
+        talkbox = Talkbox(player, excitation: osc)
+        engine.output = talkbox
+    }
+}
+
+struct TalkboxView: View {
+    @StateObject var conductor = TalkboxConductor()
+    @Environment(\.colorScheme) var colorScheme
+
+    var body: some View {
+        VStack {
+            PlayerControls(conductor: conductor)
+            HStack {
+                ForEach(conductor.talkbox.parameters) {
+                    ParameterRow(param: $0)
+                }
+            }
+            NodeOutputView(conductor.player)
+            CookbookKeyboard(noteOn: conductor.noteOn,
+                             noteOff: conductor.noteOff)
+        }
+        .padding()
+        .cookbookNavBarTitle("Talkbox")
+        .onAppear {
+            conductor.start()
+        }
+        .onDisappear {
+            conductor.stop()
+        }
+        .background(colorScheme == .dark ?
+                    Color.clear : Color(red: 0.9, green: 0.9, blue: 0.9))
+    }
+}

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

@@ -0,0 +1,71 @@
+import AudioKit
+import AudioKitEX
+import AudioKitUI
+import AVFoundation
+import SoundpipeAudioKit
+import SwiftUI
+import Tonic
+
+class VocoderConductor: ObservableObject, ProcessesPlayerInput {
+    let engine = AudioEngine()
+    let player = AudioPlayer()
+    let vocoder: Vocoder
+    let buffer: AVAudioPCMBuffer
+    var osc = MorphingOscillator(index: 2.5)
+
+    func noteOn(pitch: Pitch, point _: CGPoint) {
+        isPlaying = true
+        osc.frequency = AUValue(pitch.midiNoteNumber).midiNoteToFrequency()
+    }
+
+    func noteOff(pitch _: Pitch) {
+        isPlaying = false
+    }
+
+    @Published var isPlaying: Bool = false {
+        didSet { isPlaying ? osc.start() : osc.stop() }
+    }
+
+    init() {
+        buffer = Cookbook.sourceBuffer
+        player.buffer = buffer
+        player.isLooping = true
+        osc.amplitude = 0.5
+
+        vocoder = Vocoder(player, excitation: osc)
+        engine.output = vocoder
+
+        vocoder.attackTime     = 0.001
+        vocoder.releaseTime    = 0.02
+        vocoder.bandwidthRatio = 0.1
+    }
+}
+
+struct VocoderView: View {
+    @StateObject var conductor = VocoderConductor()
+    @Environment(\.colorScheme) var colorScheme
+
+    var body: some View {
+        VStack {
+            PlayerControls(conductor: conductor)
+            HStack {
+                ForEach(conductor.vocoder.parameters) {
+                    ParameterRow(param: $0)
+                }
+            }
+            NodeOutputView(conductor.player)
+            CookbookKeyboard(noteOn: conductor.noteOn,
+                             noteOff: conductor.noteOff)
+        }
+        .padding()
+        .cookbookNavBarTitle("Vocoder")
+        .onAppear {
+            conductor.start()
+        }
+        .onDisappear {
+            conductor.stop()
+        }
+        .background(colorScheme == .dark ?
+                    Color.clear : Color(red: 0.9, green: 0.9, blue: 0.9))
+    }
+}