ios - 设备上的语音识别是一回事吗？

Question

iOS 13 中的新功能，你应该可以这样说(import Speech):

let req = SFSpeechAudioBufferRecognitionRequest()
let loc = Locale(identifier: "en-US")
guard let rec = SFSpeechRecognizer(locale:loc)
    else {print("no recognizer"); return}
print("rec isAvailable says: \(rec.isAvailable)")
if rec.supportsOnDeviceRecognition {
    print("on device recognition")
    req.requiresOnDeviceRecognition = true
} else {
    print("no on device recognition")
}

问题是我在所有设备上都得到“no on device recognition”。我可以很好地进行语音识别；我只是不能进行设备上的语音识别。这个功能是真实存在的，还是仅仅是 Apple 的愿​​望？

Answer 1

您可能遇到了 supportsOnDeviceRecognition 的已知问题在 13.1。来自iOS/iPadOS 13.1 Release Notes :

The supportsOnDeviceRecognition property always returns false the first time it’s accessed. After a few seconds, accessing it again returns the correct value. (47822242)