Audio Recording from microphone in Qt

Hello, I am trying to do an application with the purpose of being able to record phrases and have them automatically saved in a chosen directory as wav files. For this I am trying to use the QAudioRecorder class. When I hit the record button I speak something into the microphone and .wav file gets saved into the directory that I chose with the name that I want but when I playback the file it is just noise. I don’t think I am using the recording class properly.

What I have so far is :

Code:

---

void RecordingWidget::startRecording()
{
    if(audioRecorder->state() == QMediaRecorder::StoppedState)
    {
 
        //Set Audio Input
        audioRecorder->setAudioInput(audioRecorder->defaultAudioInput());
 
        // Sets Output location where to store the file
        if(!m_outputLocationSet)
            setOutputLocation();
 
        // Set recording Settings
        QAudioEncoderSettings settings;
        settings.setCodec("audio/amr");     // Not sure what to put here
        settings.setSampleRate(16000);
        settings.setBitRate(32);
        settings.setQuality(QMultimedia::HighQuality);
        settings.setEncodingMode(QMultimedia::ConstantQualityEncoding);
 
        audioRecorder->setEncodingSettings(settings);
        audioRecorder->record();
    }
 
    else {
        stopRecording();
    }
}

---

Any guidance on how to correctly set this up greatly appreciated! Thanks.