【发布时间】:2022-01-06 05:35:50
【问题描述】:
我正在尝试使用 Swift 在 iOS 项目中使用 Azure 语音 SDK 实现语音识别,我遇到了语音识别完成功能 (stopContinuousRecognition()) 会阻塞应用程序 UI 几秒钟的问题,但没有内存或处理器负载或泄漏。我试图将此函数移至DispatchQueue.main.async {},但没有给出任何结果。也许有人遇到过这样的问题?是否有必要将它放在单独的线程中,为什么函数需要这么长时间才能完成?
编辑: 很难提供工作示例,但基本上我是在按下按钮时调用此函数:
private func startListenAzureRecognition(lang:String) {
let audioFormat = SPXAudioStreamFormat.init(usingPCMWithSampleRate: 8000, bitsPerSample: 16, channels: 1)
azurePushAudioStream = SPXPushAudioInputStream(audioFormat: audioFormat!)
let audioConfig = SPXAudioConfiguration(streamInput: azurePushAudioStream!)!
var speechConfig: SPXSpeechConfiguration?
do {
let sub = "enter your code here"
let region = "enter you region here"
try speechConfig = SPXSpeechConfiguration(subscription: sub, region: region)
speechConfig!.enableDictation();
speechConfig?.speechRecognitionLanguage = lang
} catch {
print("error \(error) happened")
speechConfig = nil
}
self.azureRecognition = try! SPXSpeechRecognizer(speechConfiguration: speechConfig!, audioConfiguration: audioConfig)
self.azureRecognition!.addRecognizingEventHandler() {reco, evt in
if (evt.result.text != nil && evt.result.text != "") {
print(evt.result.text ?? "no result")
}
}
self.azureRecognition!.addRecognizedEventHandler() {reco, evt in
if (evt.result.text != nil && evt.result.text != "") {
print(evt.result.text ?? "no result")
}
}
do {
try! self.azureRecognition?.startContinuousRecognition()
} catch {
print("error \(error) happened")
}
}
当我再次按下按钮停止识别时,我正在调用这个函数:
private func stopListenAzureRecognition(){
DispatchQueue.main.async {
print("start")
// app blocks here
try! self.azureRecognition?.stopContinuousRecognition()
self.azurePushAudioStream!.close()
self.azureRecognition = nil
self.azurePushAudioStream = nil
print("stop")
}
}
我还使用来自麦克风的原始音频数据(recognizeOnce 非常适合第一句,所以音频数据一切正常)
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标签: swift azure speech-recognition speech-to-text