The quality property appears to be undefined on all of the provided voices (AVSpeechSynthesisVoice). The enum has only two cases, default, and enhanced, which have raw values 1 and 2. I notice some voices are much better than others, and I was hoping I could use this property to programmatically find the better ones. But...
extension AVSpeechSynthesisVoiceQuality: CustomStringConvertible {
public var description: String {
switch self {
case .default: return "default"
case .enhanced: return "enhanced"
default: return "??? (rawValue=\(rawValue))"
}
}
}
print(AVSpeechSynthesisVoiceQuality.default)
print(AVSpeechSynthesisVoiceQuality.enhanced)
let all = AVSpeechSynthesisVoice.speechVoices()
print("\(all.count) voices")
for voice in all {
print("\(voice.language) -> \(voice.quality)")
}
Output look like:
default
enhanced
52 voices
en-US -> ??? (rawValue=0)
it-IT -> ??? (rawValue=0)
sv-SE -> ??? (rawValue=0)
fr-CA -> ??? (rawValue=0)
es-MX -> ??? (rawValue=0)
...
Anyone know what's going on?