Recording Your Lectures: Essential Audio Tips

This guide offers practical advice on setting up your audio for recording lectures and presentations. It does not cover every aspect of audio recording, but it provides key tips to help you avoid the most common issues. For more specialist advice, please contact the Digitial Education Unit (DEU).

1. Select the correct microphone

  • In Sound Settings under Input, you should see a dropdown menu labelled “Choose your input device” or something similar.
  • Ensure that the microphone you will use (external or internal) is selected.
  • Use the Test your microphone option. Speak into the microphone, and you should see a moving blue bar indicating that it is picking up sound. If it doesn’t move, double-check the connection and microphone selection.

2. Check your microphone

  • It may seem obvious, but ensure your microphone is securely plugged in (if external) and turned on. Some external microphones also have a small on/off switch located on the microphone itself.
  • If you’re using a headset with a built-in microphone, check for a mute button along the cable or on the ear piece, making sure it is not engaged.

3. Position your microphone for clear sound

  • Sitting too close to the microphone can cause distortion or “clipping.” Watch out for plosive sounds from letters like P, B, and T as these can result in spikes, causing popping sounds.
  • Sit an appropriate distance (about 6-12 inches) from the microphone to reduce these issues.
  • If using a headset microphone, position it to the side of your mouth to reduce the above issues.

4. Minimise background noise

  • Choose a quiet space with minimal background noise (e.g. street noise, air conditioning, fans, kettles, washing machines, people talking).
  • Close windows and doors to block out external noise.

5. Adjust volume levels

  • Make sure the input volume is at the right level. Too high can cause distortion, while too low may make your audio too quiet. Adjust accordingly.

6. Avoid echo

  • Echoes are more common in large or bare rooms with hard surfaces. Recording in a room with carpets and soft furnishings can help absorb sound and reduces echo.
  • If you’re using speakers, the microphone can pick up sound from them and create feedback. Use headphones instead.

7. Record a test slide and preview the audio

Before recording your entire presentation, it is a good idea to do a quick test and listen back. It can save on editing time and having to re-record.

  • Record one slide speaking at your normal volume and pace.
  • Listen back to ensure the audio is clear, the volume is appropriate, and no background noises or distortions are present.
  • If the audio is too quiet, check your input levels. If it’s distorted or too loud, adjust your microphone settings or sit slightly farther from the microphone.

8. Consider using the dedicated media room

  • The DEU unit offers a dedicated media room where you can make any recordings you need. They can also provide expert guidance on setting up the room for optimal sound quality. Contact the DEU for more details.