When you initialize AVSpeechSynthesizer as View prorety in SwiftUI project in Xcode 15 with iOS 17 simulator, you get some comments in console:
Failed to get sandbox extensions
Query for com.apple.MobileAsset.VoiceServicesVocalizerVoice failed: 2
#FactoryInstall Unable to query results, error: 5
Unable to list voice folder
Query for com.apple.MobileAsset.VoiceServices.GryphonVoice failed: 2
Unable to list voice folder
Unable to list voice folder
Query for com.apple.MobileAsset.VoiceServices.GryphonVoice failed: 2
Unable to list voice folder
When you try to run utterance inside a Button as synthesizer.speak(AVSpeechUtterance(string: "iOS 17 broke TextToSpeech")), you get endless stream of warnings that repeaths on and on in console like this:
AddInstanceForFactory: No factory registered for id <CFUUID 0x60000024f200> F8BB1C28-BAE8-11D6-9C31-00039315CD46
Cannot find executable for CFBundle 0x600003b2cd20 </Library/Developer/CoreSimulator/Volumes/iOS_21A328/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 17.0.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/TextToSpeechMauiSupport.framework> (not loaded)
Failed to load first party audio unit from TextToSpeechMauiSupport.framework
Could not instantiate audio unit. Error=Error Domain=NSOSStatusErrorDomain Code=-3000 "(null)"
Could not instantiate audio unit. Error=Error Domain=NSOSStatusErrorDomain Code=-3000 "(null)"
Could not instantiate audio unit. Error=Error Domain=NSOSStatusErrorDomain Code=-3000 "(null)"
Could not instantiate audio unit. Error=Error Domain=NSOSStatusErrorDomain Code=-3000 "(null)"
Could not instantiate audio unit. Error=Error Domain=NSOSStatusErrorDomain Code=-3000 "(null)"
Couldn't find audio unit for request SSML Length: 40, Voice: [AVSpeechSynthesisProviderVoice 0x600002127e30] Name: Samantha, Identifier: com.apple.voice.compact.en-US.Samantha, Supported Languages (
"en-US"
), Age: 0, Gender: 0, Size: 0, Version: (null)
VoiceProvider: Could not start synthesis for request SSML Length: 40, Voice: [AVSpeechSynthesisProviderVoice 0x600002127e30] Name: Samantha, Identifier: com.apple.voice.compact.en-US.Samantha, Supported Languages (
"en-US"
), Age: 0, Gender: 0, Size: 0, Version: (null), converted from tts request [TTSSpeechRequest 0x600003709680] iOS 17 broke TextToSpeech language: en-US footprint: compact rate: 0.500000 pitch: 1.000000 volume: 1.000000
Failed to speak request with error: Error Domain=TTSErrorDomain Code=-4010 "(null)". Attempting to speak again with fallback identifier: com.apple.voice.compact.en-US.Samantha
CPU is under pressure (more than 100%). AVSpeechSynthesizer doesn't speak. All works fine on iOS 16.
The code of View:
import SwiftUI
import AVFoundation
struct ContentView: View {
let synthesizer = AVSpeechSynthesizer()
var body: some View {
VStack {
Button {
synthesizer.speak(AVSpeechUtterance(string: "iOS 17 broke TextToSpeech"))
} label: {
Text("speak")
}
.buttonStyle(.borderedProminent)
}
.padding()
}
}
#Preview {
ContentView()
}
On the real device nothing at all happened.
The same happens to my production app. I have so much crashes related to TextToSpeach and iOS 17. What's going on?