封装一个语言识别文字的方法

语音识别

需求：

1. 参考官方文档，整合语音识别api
2. callback 的写法改为 Promise 的版本

• 在startRecord中：

1. 参考文档实例化-开启转换
2. 将录制的内容传递给录音识别
3. 回调函数中的 Log，改为 Logger

• 在closeRecord：

1. 结束识别、释放资源
2. 设置状态为 VoiceState.VOICEOVER

 

  async startRecord() {// 开始识别this.asrEngine = await speechRecognizer.createEngine({language: 'zh-CN',online: 1})// 保存组件的 this，后续通过_this来使用组件const _this = thisthis.asrEngine.setListener({onStart(sessionId: string, eventMessage: string) {console.info(`onStart, sessionId: ${sessionId} eventMessage: ${eventMessage}`);},onEvent(sessionId: string, eventCode: number, eventMessage: string) {console.info(`onEvent, sessionId: ${sessionId} eventCode: ${eventCode} eventMessage: ${eventMessage}`);},onResult(sessionId: string, result: speechRecognizer.SpeechRecognitionResult) {_this.keyword = result.result_this.onChange(result.result)console.info(`onResult, sessionId: ${sessionId} sessionId: ${JSON.stringify(result)}`);},onComplete(sessionId: string, eventMessage: string) {_this.onComplete(_this.keyword)_this.keyword = ''_this.voiceState = VoiceState.DEFAULTconsole.info(`onComplete, sessionId: ${sessionId} eventMessage: ${eventMessage}`);},onError(sessionId: string, errorCode: number, errorMessage: string) {console.error(`onError, sessionId: ${sessionId} errorCode: ${errorCode} errorMessage: ${errorMessage}`);}})const recognizerParams: speechRecognizer.StartParams = {sessionId: '10000',audioInfo: {audioType: 'pcm',sampleRate: 16000,soundChannel: 1,sampleBit: 16}}this.asrEngine?.startListening(recognizerParams)// 开始录音const audioStreamInfo: audio.AudioStreamInfo = {samplingRate: audio.AudioSamplingRate.SAMPLE_RATE_16000,channels: audio.AudioChannel.CHANNEL_1,sampleFormat: audio.AudioSampleFormat.SAMPLE_FORMAT_S16LE,encodingType: audio.AudioEncodingType.ENCODING_TYPE_RAW}const audioCapturerInfo: audio.AudioCapturerInfo = {source: audio.SourceType.SOURCE_TYPE_MIC,capturerFlags: 0}const audioCapturerOptions: audio.AudioCapturerOptions = {streamInfo: audioStreamInfo,capturerInfo: audioCapturerInfo}this.audioCapturer = await audio.createAudioCapturer(audioCapturerOptions)this.audioCapturer.on('readData', (buffer) => {console.log('mk-logger', buffer.byteLength)this.asrEngine?.writeAudio('10000', new Uint8Array(buffer))})await this.audioCapturer.start()this.voiceState = VoiceState.VOICING}