private string tempStr = ""; // temporary directory to store the converted audio file
private void StartRecognize(string apiRecord)
{
WavInfo wav = ClassUtils.GetWavInfo(apiRecord);
//数据量 = (采样频率 × 采样位数 × 声道数 × 时间) / 8
//if ((double)(wav.datasize * 8) / (wav.dwsamplespersec * wav.wbitspersample * wav.wchannels) > 60)
//{
// labelInfo.ForeColor = Color.HotPink;
// labelInfo.Text = "Error: The audio file is too large!";
//}
// 非8k/16k, 16bit 位深, 单声道的，进行格式转换
if (apiRecord.EndsWith(".mp3", StringComparison.CurrentCultureIgnoreCase) ||
int.Parse(wav.dwsamplespersec.ToString()) != 16000 ||
int.Parse(wav.wbitspersample.ToString()) != 16 ||
int.Parse(wav.wchannels.ToString()) != 1)
{
apiRecord = ClassUtils.Convert2Wav(apiRecord); // convert audio file to 16k，16bit wav
tempStr = apiRecord;
}
labelInfo.ForeColor = Color.SpringGreen;
labelInfo.Text = "Recognizing...";
KeyValuePair <string, string> keyVal = (KeyValuePair <string, string>)comboBoxLan.SelectedItem;
speechModel.APILanguage = keyVal.Value; // fetch the value in comboBox
if (backgroundWorker.IsBusy != true)
{
this.backgroundWorker.RunWorkerAsync(); // do the time consuming task
}
}
public static string checkAudio(string fileName)
{
WavInfo wav = ClassUtils.GetWavInfo(fileName);
//数据量 = (采样频率 × 采样位数 × 声道数 × 时间) / 8
// 非8k/16k, 16bit 位深, 单声道的，进行格式转换
if (fileName.EndsWith(".mp3", StringComparison.CurrentCultureIgnoreCase) ||
int.Parse(wav.dwsamplespersec.ToString()) != 16000 ||
int.Parse(wav.wbitspersample.ToString()) != 16 ||
int.Parse(wav.wchannels.ToString()) != 1)
{
fileName = ClassUtils.Convert2Wav(fileName); // convert audio file to 16k，16bit wav
}
return(fileName);
}