Sound and Lighting
Part of Sound recording for business videos
Reducing room echo before recording an interview
Reduce room echo by moving the interview to a quieter, less reflective space and bringing the microphone closer to the speaker.
Reduce room echo by moving the interview to a quieter, less reflective space and bringing the microphone closer to the speaker. Make those changes before opening an audio repair plugin. Echo is part of the recorded voice once reflections reach the mic, and heavy processing can damage clarity.
Listen for reflections
Stand where the interviewee will sit, speak a sentence and listen to a short test through headphones. Bare walls, glass, a long table and hard floors may reflect the voice. A large room is not necessarily worse than a small one; the actual sound matters.
Move the chair away from a bare wall or corner if the test improves. Add safe, temporary soft materials such as a rug, curtain or padded furniture where they do not obstruct the set. Avoid covering ventilation or creating trip hazards. If a quieter room is available, compare it before investing time in treating a poor one.
Pre-Recording Echo Reduction Checklist
- Avoid bare walls and cornersMove chair away from reflective surfaces; test improvement with headphone playback.
- Use temporary soft materialsAdd rugs, curtains, or padded furniture to reduce reflections without permanent changes.
- Ensure no obstructions to ventilation or safetyDo not block air vents or create trip hazards with placed items.
- Compare alternative rooms if availableTest a quieter room before investing in treatment of a poor acoustic space.
Improve the direct voice
Place the microphone as close as framing and comfort allow. A lapel can maintain distance on a moving subject; a boom can sit just out of frame above a seated speaker. Greater shotgun-mic distance can make room echo and background noise more noticeable, despite its directionality. Turning up gain on a distant mic raises the echo with the voice.
Check both interviewer and guest positions. If only one voice is close, the edit may alternate between clean and hollow sound. Aim the boom accurately, or give each speaker an appropriate microphone. Keep fans and office machinery quiet when practical; echo treatment does not remove a separate steady hum.
Pros and Cons of Using a Shotgun Mic vs. Lapel Mic
- Shotgun Mic (Boom)Highly directional; captures clear voice when positioned correctly above seated speaker.
- Lapel MicMaintains consistent distance during movement; ideal for dynamic interviews.
- Cons: Shotgun MicGreater distance increases sensitivity to room echo and background noise; gain boosts amplify both voice and echo.
- Cons: Lapel MicClothing rustle and handling noise can interfere with audio quality.
Record a fresh test
After moving furniture or the mic, record the same sentence again at the expected speaking level. Compare the files at similar playback volume so a louder test does not merely seem clearer. Listen for clothing rustle, off-axis tone and background activity introduced by the new placement. A soft room can still have distracting noise.
Note the chair and mic positions once the sound is acceptable. If the interview resumes after a break, repeat the short test before recording more answers. The aim is a voice that sounds direct and consistent enough to edit without aggressive echo reduction.
Key Audio Treatment Tips from Industry Sources
- Best practice for testing audioRecord a test sentence at expected speaking level and compare files at equal volume.
- Effect of distant mics on echoIncreased distance makes room echo and background noise more noticeable despite directionality.
