C++ (Qt)
QByteArray output_bytes;
QAudioInput* audio_in;
QAudioFormat format;
QBuffer output_buffer;
...
 
AudioCapture::AudioCapture()
{
  // Set up the format, eg.
  format.setFrequency(8000);
  format.setChannels(1);
  format.setSampleSize(16);
  format.setCodec("audio/pcm");
  format.setByteOrder(QAudioFormat::LittleEndian);
  format.setSampleType(QAudioFormat::UnSignedInt);
 
  if (!output_buffer.isOpen())
   this->output_buffer.setBuffer(&output_bytes);
  output_buffer.open(QIODevice::WriteOnly | QIODevice::Truncate);
  QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice();
  if (!info.isFormatSupported(format))
  {
    qWarning() << "default format not supported try to use nearest";
	this->format = info.nearestFormat(format);
  }
  audio_in = new QAudioInput(format, this);
  audio_in->start(&output_buffer);
}