Audio Cleanup for Teachers and Course Makers
Updated October 2026
Students learn better when they can hear the teacher clearly. A quiet room, a steady level and a gentle cleanup make a lesson recording easy to follow.
The short version
- A steady voice at a steady level is easier to follow than a loud, quiet mix.
- Record in a quiet room and switch off the fans for the take.
- Clean gently, then add captions from the transcript.
- Check the recording on a phone, where many students will listen.
Clear voice first
A calm voice at a steady level helps students follow. Keep the mic at a steady distance and speak a little more slowly than in conversation.
Clean gently
Clean the room noise and any clicks. Keep the voice natural, because a robotic lesson is tiring. The phone cleanup steps apply to a lesson too.
Captions for everyone
Captions help students who are deaf or hard of hearing, and help everyone who listens in a noisy place. A transcript made on your PC exports as captions; check the wording before you publish.
Check on a phone
Listen on a phone speaker and on headphones. Many students will hear the lesson that way.
Clean the lesson, add captions
Tunedzy cleans the lesson, transcribes it on your PC and exports captions. Nothing is uploaded.
Free tools for this
Frequently asked questions
Do captions need to be perfect?
They should be accurate. Check names and technical words before you publish.
How do I record a lesson at home?
Use the lecture voice guide on this site: a quiet room, a steady level and short sections.
Is this accessible?
Captions and clear audio help many students, including those who are deaf or hard of hearing.
Keep going
How to Record a Lecture or Tutorial VoiceHow to Edit a Podcast by Its Words
How to Record an Audiobook at HomeAll guides and comparisons · Tunedzy Go on your phone · Pricing