How to improve audio quality when recording video (2026)
Quick Answer
To improve audio quality when recording video, get the microphone closer to the sound source, reduce background noise, and monitor levels before and during recording. In most cases, a basic external microphone placed well will improve sound more than changing the camera body or adding visual accessories.
Overview
Good video audio comes from three things working together: the right microphone, the right placement, and clean recording practice. Built-in camera and phone microphones usually pick up too much room echo, wind, handling noise and unwanted background sound because they are too far from the person speaking. The quickest improvement is usually to use an external microphone and place it as close to the speaker as the shot allows. You also need to control the space around you. Hard rooms, traffic, fans and clothing rustle can ruin otherwise good footage. Before you press record, choose the quietest location available, listen for noise you can switch off or avoid, and run a short test recording on headphones. Watch your input levels too: if they are too low, the recording may sound hissy when you raise it later; if they are too high, clipped audio is often impossible to repair. This guide is for practical, everyday video recording rather than advanced studio engineering. The aim is to help you capture clearer dialogue, fewer distractions and more usable sound whether you are filming with a phone, camera or webcam.
Who this is for
Anyone recording interviews, talking-head videos, training clips, social content, events or simple documentaries with a phone, camera or computer.
What you’ll need
- Video device with audio recording capability
- External microphone if available, such as a lavalier, shotgun or USB microphone
- Headphones for monitoring and test playback
- Wind protection for outdoor recording, if relevant
- Fully charged batteries or external power for camera, recorder and wireless units
- Enough storage space for video and audio files
- Quiet recording location or basic soft furnishings to reduce echo
Before you start
Check that your microphone is compatible with your camera, phone or computer, and confirm whether you need an adaptor, interface or powered input. Make sure the correct microphone is selected in your device settings or recording app, and do a brief test to confirm you are recording from the external mic rather than the built-in one.
Step-by-step
- 1
Choose the quietest recording environment you can
Pick a location away from traffic, air conditioning, crowds, appliances and reverberant empty rooms. Close doors and windows if possible, switch off anything noisy that is not essential, and use curtains, rugs, furniture or soft furnishings to reduce echo.
Why: The microphone records the room as well as the voice. Reducing noise and reflections at the source is more effective than trying to repair them later in editing.
- 2
Use the right microphone for the job
For a person speaking to camera, use a lavalier mic clipped neatly on clothing or a shotgun mic positioned just out of frame. For desk-based recording, a USB microphone or recorder placed close to the speaker can work well. Keep using the built-in microphone only if you have no other option.
Why: Different microphones suit different setups. An external mic usually gives clearer speech because it can be placed much closer to the sound source than a camera or phone body.
- 3
Place the microphone as close as practical
Position the microphone so it is aimed properly and close enough to capture the speaker clearly without entering the shot unless that is acceptable. If using a lavalier, secure it to reduce clothing rustle. If using a shotgun, point it at the speaker rather than generally at the room.
Why: Distance is one of the biggest factors in audio quality. Closer placement increases useful voice level and reduces room sound, echo and background noise.
- 4
Set audio levels and monitor with headphones
Record a short sample of normal speech at expected volume. Listen back on headphones and adjust the input gain so the voice is strong and clear without distorting on loud words or laughter. If your device offers manual level control, use it carefully rather than relying blindly on automatic settings.
Why: If levels are too hot, clipping can permanently damage the recording. If they are too low, raising them later can increase hiss and room noise.
- 5
Control wind, handling noise and movement
Use suitable wind protection outdoors. Mount the microphone securely, avoid touching the camera or cable during takes, and ask speakers to avoid jewellery, scarves or fabrics that rub against a lavalier. If you are moving, test whether footsteps or body movement transfer noise into the mic.
Why: Mechanical noise is often very noticeable and distracting. It can make otherwise clear dialogue unusable.
- 6
Record a short test and review it fully
Before the real take, record a brief sample in the exact setup you will use. Listen for hum, buzz, echo, low battery problems, wireless dropouts, wind, rustle and incorrect mic selection. Fix any issue before recording the full video.
Why: A test recording catches problems while you still have time to solve them, instead of discovering them during editing when the moment cannot be recreated.
- 7
Keep backup options when the recording matters
For important shoots, consider recording a backup track using a second microphone or a separate recorder if your setup allows it. Keep an eye on battery status, connection security and storage throughout the session.
Why: Audio failures are often more damaging than video issues. A backup can save a take if a cable fails, a wireless link drops out or a primary recording distorts.
Why this works
Clear audio depends on signal-to-noise ratio: you want much more wanted sound, such as speech, than unwanted sound, such as room echo, wind or traffic. A suitable microphone placed close to the source improves that ratio, while careful level setting prevents distortion and a quiet environment reduces competing noise before it reaches the recorder.
Common mistakes to avoid
- Relying on the built-in camera or phone microphone from too far away
- Recording in echoey rooms with bare walls and hard floors
- Skipping a headphone check and discovering problems later
- Setting levels too high and causing clipped, distorted speech
- Ignoring clothing rustle, cable bumps or handling noise
- Forgetting wind protection outdoors
- Using an external microphone but not confirming the device is actually recording from it
Troubleshooting
Speech sounds echoey or distant
Move the microphone closer, use a lavalier or shotgun mic, and add soft materials in the room to reduce reflections.
Audio distorts on loud words
Lower the input gain, increase distance slightly if appropriate, and run another test with the speaker using their real performance volume.
There is hiss or noticeable background noise
Raise the wanted voice level by moving the microphone closer, reduce room noise, and avoid recording with levels set too low.
Outdoor audio is rumbling or buffeted
Add proper wind protection, reposition to shelter from wind, and if needed move indoors or to a more protected location.
Lavalier audio has scratching or rustling sounds
Reposition and secure the mic and cable, keep it clear of moving fabric or jewellery, and test with the person moving and speaking naturally.
No sound or very weak sound from the external microphone
Check connections, battery or power requirements, input settings, adaptor type and whether the device has switched back to its internal microphone.
Compare your options
Built-in camera or phone microphone
Best for: Quick casual clips when convenience matters more than quality
Pros: Always available, no setup, no extra accessories
Cons: Usually too far from the speaker, more room noise, more handling noise, weaker dialogue quality
Lavalier microphone
Best for: Talking-head videos, interviews and presenters who need to move
Pros: Very close to the speaker, consistent voice level, discreet on camera
Cons: Can pick up clothing rustle, needs careful placement, cable or wireless setup may add complexity
Shotgun microphone
Best for: Dialogue when you want the mic out of frame and positioned above or just in front of the subject
Pros: Can sound natural, keeps mic hidden, useful on cameras or booms
Cons: Still needs to be reasonably close, less effective in very echoey rooms, can pick up handling noise if mounted badly
USB microphone or desktop mic
Best for: Webcam videos, voiceovers and desk-based recordings
Pros: Simple for computers, often better than laptop audio, good for controlled indoor setups
Cons: Not ideal for wide shots or moving subjects, not usually suitable for camera-only recording without extra equipment
| Option | Best for | Pros | Cons |
|---|---|---|---|
| Built-in camera or phone microphone | Quick casual clips when convenience matters more than quality | Always available, no setup, no extra accessories | Usually too far from the speaker, more room noise, more handling noise, weaker dialogue quality |
| Lavalier microphone | Talking-head videos, interviews and presenters who need to move | Very close to the speaker, consistent voice level, discreet on camera | Can pick up clothing rustle, needs careful placement, cable or wireless setup may add complexity |
| Shotgun microphone | Dialogue when you want the mic out of frame and positioned above or just in front of the subject | Can sound natural, keeps mic hidden, useful on cameras or booms | Still needs to be reasonably close, less effective in very echoey rooms, can pick up handling noise if mounted badly |
| USB microphone or desktop mic | Webcam videos, voiceovers and desk-based recordings | Simple for computers, often better than laptop audio, good for controlled indoor setups | Not ideal for wide shots or moving subjects, not usually suitable for camera-only recording without extra equipment |
Alternatives
- Record audio separately on a dedicated recorder and sync it in editing
- Use a wired lavalier instead of a wireless system when reliability matters most
- For voice-only segments, record a separate voiceover later in a quieter space
Pro tips
- If you can improve only one thing, move the microphone closer to the speaker
- Ask everyone on set to pause and listen for hidden noises before each take
- Start each new location with a fresh test recording
- Keep spare batteries, cables and memory cards if your setup depends on them
- Label and monitor any separate audio files so they are easy to match in editing
Safety notes
- Tape down or secure cables where people could trip over them
- Keep microphones, recorders and phones protected from rain and excessive moisture
- Use headphones at a sensible listening level during long monitoring sessions
Legal & regulatory notes
Get consent where required before recording people, especially for interviews, workplaces, schools, healthcare settings or private property. If you record in public or use wireless audio equipment, check the applicable local privacy, filming and radio equipment rules in your country or region.
What this guide does not cover: This guide covers practical audio improvement during recording. It does not go deep into advanced post-production mixing, multi-track location sound workflows, studio acoustic design or brand-specific menu settings for every camera and phone.
Cost considerations
A modest external microphone often gives a bigger quality improvement than upgrading the camera. Wired microphones are commonly the most cost-effective starting point, while wireless systems and separate recorders add flexibility but also more expense, batteries and setup complexity.
Frequently asked questions
Is an external microphone really necessary?+
Not always, but it is usually the fastest way to improve dialogue. Built-in microphones are convenient, yet they are often too far from the speaker to capture clean speech well.
Should I use a lavalier or a shotgun microphone?+
Use a lavalier when you need consistent voice level on one speaker, especially if they move. Use a shotgun when you want the mic out of shot and can place it close and aimed correctly.
Can I fix bad audio in editing?+
You can reduce some noise, adjust tone and even out levels, but heavy echo, clipping, strong wind and severe rustle are often difficult or impossible to repair fully.
Why does my audio sound worse in a large empty room?+
Hard surfaces reflect sound, which creates echo and a hollow tone. Softer furnishings and closer microphone placement usually help a lot.
Is wireless audio better than wired audio?+
Wireless gives freedom of movement and a cleaner look, but wired setups are often simpler and can be more reliable because there is no radio link to drop out.
Sources & references
Guidance on this page is traced to documented sources. Last checked 25 September 2026.
- Nikon Learn & Explore · manufacturer
Supports core recording practice such as monitoring audio, choosing suitable microphones and recognising that built-in microphones are limited for high-quality video sound.
Basic audio principles change slowly, but device connections, wireless systems and local wireless rules can change over time.