Best Audio Settings for Recording: Prevent Noise Before It Happens
The most effective noise removal happens before you record. Good recording practice dramatically reduces the amount of noise in your audio, which means less processing needed in post and better final quality. Here are the settings and techniques that make the biggest difference.
Recording quality settings
These are often misunderstood settings that cause unnecessary noise.
Sample rate: The default setting in most recording software is fine for voice. Studio-quality settings are the standard for video and podcast production. There is no benefit to using the highest available settings for voice. They do not reduce noise and produce larger files.
Bit depth: Record at 24-bit, not 16-bit. The reason is headroom for gain. With 24-bit recording, you can record at a lower input level and have plenty of dynamic range to work with in post. Lower input levels mean less self-noise is amplified. Most audio interfaces default to 24-bit, but check your software settings.
File format: Always record to WAV or AIFF (uncompressed). Never record directly to MP3. MP3 encoding during recording introduces artifacts and prevents you from making quality edits later.
Gain staging: the most important setting
Incorrect gain is the primary cause of noisy recordings in home studios and field recording alike.
Too much gain: Amplifies both your voice and noise equally. The balance between voice and noise does not improve, but noise becomes more audible when the recording is played at normal levels.
Too little gain: Forces you to boost levels in post, which amplifies the noise floor along with the signal.
The sweet spot: Set your input gain so that normal speaking peaks between -18 dBFS and -12 dBFS on your recording meter. This gives you headroom for loud moments while keeping the noise floor low relative to your signal.
A common mistake is setting gain while speaking at your loudest and adjusting to avoid peaking. Instead, set gain for your average speaking level, leaving headroom for louder moments.
Microphone selection and polar pattern
Dynamic vs. condenser: Dynamic microphones (like the Shure SM7B or Electro-Voice RE20) have higher self-noise but reject room sound better than condensers. They need to be positioned very close to the mouth, about 4-6 inches. Condenser microphones have lower self-noise but are more sensitive to room noise.
For home recording environments where room noise is an issue, dynamic microphones are often the better choice despite their higher self-noise specifications.
Polar pattern: A cardioid polar pattern rejects sound from the rear (180 degrees from the front of the mic). A hypercardioid has a narrower pickup pattern and rejects more side noise. Omnidirectional microphones pick up from all directions and should be avoided in noisy environments.
USB vs. XLR: Quality USB microphones are convenient but the preamp circuitry inside them varies widely. XLR microphones with a dedicated audio interface give you better preamp quality and lower noise floor.
Room treatment tips
You do not need an acoustically treated studio to get clean recordings. These practical tips make a significant difference:
Record in a small room with soft furnishings. A walk-in closet with clothes hanging is one of the best recording environments in a typical home. The clothes absorb high-frequency reflections, and the small size reduces reverb.
Add absorption to the most reflective surfaces. A blanket hung behind the microphone or acoustic panels on the wall behind you reduce room echo significantly.
Move away from parallel walls. Standing or sitting in the center of a room, away from parallel reflective surfaces, reduces comb filtering artifacts.
Turn off HVAC during recording. Record in short segments between HVAC cycles if needed. This single step eliminates the most common source of background noise in home recordings.
Pre-recording checklist
Run through these before every recording session:
- Turn off HVAC and fans
- Close windows and doors
- Silence notifications on phones and computers
- Check for appliances running (dishwasher, washing machine)
- Verify gain staging with a brief test recording
- Record 10 seconds of room tone (silence) for noise profile reference
- Check headphone monitoring for any hum or interference
When to use noise removal in post
Even with good recording practice, some recordings will have noise that needs cleanup: unexpected sounds, guests recording from noisy environments, field recordings. Use Noise Remover for quick, free cleanup that happens entirely in your browser.
The combination of good recording practice and quality noise removal tools produces results that were simply not achievable in home studios a decade ago. Start with clean recordings, and use noise removal as a finishing step rather than a rescue operation.