Listen to the location before filming
Air conditioning, refrigeration, traffic, lifts, hard walls, nearby events and intermittent alarms may be unobtrusive in conversation but obvious in a recording. A recce should include listening at the intended time, not only looking for a good background.
Move the interview, switch a controllable source off safely, add sound treatment or schedule around predictable noise. Record the decision rather than assuming software will remove it later.
Set levels for real performance
Test the contributor at the energy they will use, including laughter, emphasis or demonstration noise. Leave appropriate headroom and keep the recording chain consistent.
Clipped audio has lost information and often sounds harsh even after its level is reduced. A low waveform is not the only problem; distortion can be recorded at an earlier stage while a later meter appears safe.
Monitor while the sound can still be fixed
Headphones and visible meters help the crew catch clothing rustle, radio interference, a disconnected cable, changing noise or a speaker who has moved away from the microphone.
Do not rely on a brief test. Important material needs continuous or appropriately active monitoring, especially when an action or answer cannot be repeated.
Use redundancy where the risk justifies it
A second microphone, separate recorder or safety track can protect an important interview or live moment from a single failure. The backup should be genuinely independent enough to address the likely risk.
More tracks do not replace monitoring and organisation. Label sources, maintain power and media, and record enough reference information to synchronise them accurately.
Record the sound of the place
Room tone helps editors bridge cleaned dialogue without an unnatural silence. Atmosphere and specific effects—machinery, tools, doors, crowds, products or natural environments—give supporting footage weight and location.
Capture isolated sounds safely where they matter. A library effect may be useful, but it should not make a product, process or environment sound unlike the real experience.
Plan several speakers deliberately
Panels, conversations and events need clear microphone assignments, frequency coordination where relevant, enough inputs and a way to identify who is speaking. Record the room or audience separately when its reaction matters.
Automatic systems may help, but a skilled operator still follows changes in distance, energy and unexpected participation. One microphone in the middle of a table rarely gives every voice the same clarity.
Post-production improves good source audio
Dialogue editing can choose cleaner takes, repair transitions, reduce steady noise, manage breaths and balance speakers. Equalisation, dynamics and targeted restoration can improve consistency and intelligibility.
These tools have limits. Heavy noise reduction can make speech watery or artificial, and no process can reliably recover words that were never distinguishable from distortion or competing sound.
Music should support rather than mask
Music can set pace and tone, but it must leave room for speech and important natural sound. Edit it around the structure instead of placing one level under the entire film.
Confirm the licence covers the platforms, term, territory and paid use. A track available inside one platform is not automatically cleared for a website, event, advertisement or another account.
Mix for the real destination
A cinema, conference system, website player and phone speaker present different challenges. Agree the delivery requirements and check dialogue, music, stereo image and peak behaviour through representative playback.
Captions support accessibility and sound-off viewing, but they do not excuse poor audio. Review names, numbers and technical language, and provide the requested caption format with the final mix.
Professional-audio checklist
- The location has been assessed by listening.
- Microphones suit the sources, movement and environment.
- Levels are tested at realistic performance energy.
- Important recordings are monitored continuously.
- Redundancy addresses a specific failure risk.
- Room tone, atmosphere and useful effects are captured.
- Music rights and dialogue priority are confirmed.
- The final mix and captions are checked at delivery.
See how audio is finished in the post-production guide, plan location sound with the pre-production guide, or discuss a sound-critical production.
