| QAboutDlg | About dialog to show application details |
| QLogView | Pitch detection algorithm and note scale visualization |
| QOsziView | Signal visualization in the time domain |
| QPaSoundInputException | An exception thrown when a PortAudio error occurs |
| QPitch | Main window of the application |
| QPitchCore | Working thread for the QPitch application |
| QPitchParameters | Structure holding the application settings |
| QSettingsDlg | Settings dialog to configure the application |