To improve the audio quality on Omegle Fast Chat, you can try the following: 1. Make sure your microphone is properly connected to your device. 2. Check if your microphone is being used by any other application. Close all other applications that are using the microphone. 3. Adjust the microphone settings on your device to ensure it is not muted or too low. 4. Clear your browser cache and cookies. 5. Try using a different browser or device to see if the issue persists.