Traffic is one of the most common reasons a good video sounds poor. The rumble of cars is low and steady, and the bursts of horns and engines are sharp. Both overlap the voice, so cleaning them afterwards can make the speech sound thin. The best approach is to avoid the noise at the source.
Move away from the road
Record in a room on the far side of the building, away from the road. Close the windows and doors, and turn off fans or air conditioning. Even a short distance from a busy road can make a large difference, especially for the low rumble.
Choose the time
Record early in the morning, late at night or on a quiet day, when traffic is lighter. A few minutes of quiet beats hours of cleanup. Plan the shoot around the time when the road is calmest.
Place the microphone close
A close microphone captures more of the voice and less of the road. Use a clip-on for the chest, or a desk microphone close to the mouth. Keep the distance steady, so the voice does not drop under the noise when you move.
Clean what remains gently
A high-pass filter can reduce low rumble without changing the voice much, if the cutoff is set carefully. Use noise reduction lightly, and listen for the watery sound that heavy cleanup causes. The Noise-Free Voice Recorder can clean background noise from an existing recording.
Re-record where the noise covers the voice
If a horn or engine covers a word, no filter can restore it. Re-record that line, rather than repairing it. A short clean take is better than a long repaired one.
Limits
Traffic noise in a city is hard to remove completely. Plan the location and the time, and treat cleanup as a way to tidy the recording, not a rescue.
Try it free: Vocal Checker
Spot clipping, noise, rumble and level problems. Runs in your browser, nothing is uploaded.
Frequently asked questions
Can a filter remove all traffic noise?
Rarely. It reduces the rumble, but bursts of horns can cover the voice.
Is a windscreen useful against traffic?
It helps with wind, not with the sound of traffic. Distance and timing help more.
What time is quietest for outdoor shoots?
Early morning, late at night or on a quiet day. Test the location first.
Should I use noise reduction on the whole video?
Use it lightly, and only on sections that need it, to avoid a watery sound.
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