QAudioRecorder audioRecorder = new QAudioRecorder;
    
    QAudioEncoderSettings audioSettings;
    audioSettings.setCodec("audio/amr");
    audioSettings.setQuality(QMultimedia::HighQuality);
    
    audioRecorder->setEncodingSettings(audioSettings);
    
    audioRecorder->setOutputLocation(QUrl::fromLocalFile("test.amr"));
    audioRecorder->record();


这是Qt文档里的说明，具体看一下QAudioRecorder 的用法。


http://qt-project.org/doc/qt-5/qtmultimedia-audiorecorder-example.html

顶一下吧，我不懂