Remote interviews have become the default format for most podcasts. The guests are anywhere in the world, the logistics are easier, and the content is often better because you're not limited by geography. The downside: you're recording two or more audio signals from completely different environments, with zero control over what's happening on the other side of the call.
The result is that most multi-guest podcasts have a noticeable quality gap between the host and the guests. The host sounds polished and close. The guests vary from surprisingly good to genuinely difficult to listen to.
Here's how to close that gap.
The Fundamental Problem with Remote Recordings
When you record in-person, everyone shares the same acoustic environment. You can optimize that environment once and it works for everyone.
Remote recordings mean every participant is in their own room, with their own mic, their own background noise, their own acoustic properties. A guest recording from a tiled bathroom in a busy city apartment sounds radically different from a host recording from a treated office. And you can't fix a guest's room from your end.
This is why preparation matters so much for remote interviews. The time you invest before the recording is worth more than anything you can do in post.
Before the Recording: Setting Guests Up for Success
Most podcast guests have never thought about audio quality. They've been on Zoom calls their whole life and assume that's fine for podcasting too. It usually isn't.
The Pre-Interview Email
Send guests a brief note before the interview. Keep it short — you don't want to overwhelm people who are doing you a favor. The essentials:
- Use headphones. This eliminates echo from the guest's speakers bleeding into their mic. It's the single most impactful thing a remote guest can do.
- Find a quiet room. The bedroom, a home office, a walk-in closet — anywhere with soft surfaces and away from HVAC or street noise.
- Use a wired connection if possible. Wi-Fi calls can introduce stuttering and artifacts that are genuinely hard to clean up. An ethernet cable is the simple solution.
- Do a quick sound check 5 minutes before. Not to fix everything, but to catch the obvious problems while there's still time.
The Sound Check
A sound check before recording isn't just a courtesy — it catches problems that will cost you hours in editing if you discover them later. Ask your guest to:
- Record a sentence or two while you listen back
- Stay quiet for 5 seconds while you listen for background noise
- Speak at their normal interview volume so you can check levels
Common things you'll catch in a sound check: the laptop fan blasting because they have 40 browser tabs open, a TV in the background room, a phone that isn't silenced, mic gain set so low the voice is barely audible.
Recording Options for Guests
Option 1: Record Locally, Send the File
This is the gold standard for remote podcast audio. Instead of recording from a Zoom or Skype call, ask guests to record themselves locally with a free app (Audacity on desktop, Voice Memos on iPhone, Dolby On on Android), and send you the file after the interview.
The advantage: you get an uncompressed audio file from their side instead of the highly compressed audio that comes through a video call. Call audio is optimized for intelligibility, not quality — it gets processed, compressed, and sometimes degraded in ways you can't undo.
Software like Riverside.fm, Zencastr, and SquadCast automate this process. They record each participant locally in high quality and sync the tracks for you. If you're doing regular interviews, one of these tools is worth the subscription.
Option 2: Record from the Call (With Caveats)
If you're recording straight from a video call, the audio quality ceiling is lower. You're working with what the compression codec left you. That said:
- Record from Zoom or Google Meet, not from an analog line — digital calls are more consistent
- Have your guest use a headset mic rather than the built-in laptop mic if possible
- Zoom has a built-in "original sound" option that disables some of its aggressive audio processing — turn this on before recording
What to Do When the Guest's Audio Is a Problem
Despite your best preparation, guests will sometimes show up with poor audio. You have two realistic options.
Option A: Fix it in real-time. Stop the recording, ask them to move somewhere quieter or find different headphones. Guests are usually happy to try — they want to sound good too. The 5 minutes you spend here is nothing compared to the editing time you save.
Option B: Record it and fix what you can in post. This is sometimes unavoidable — the guest can't easily change their situation mid-conversation. In this case, accept that the guest's audio may not be perfect, and plan to spend time on it in editing.
Post-Processing Remote Interview Audio
Remote interviews typically require per-track processing — you can't run the same settings on every voice and expect good results.
Process Each Track Separately
The host track and every guest track should be processed independently. Background noise levels will differ. Room acoustics will differ. What works for the host's audio might over-process the guest's.
Export separate files for each participant before you start editing, process them individually, then import them into your editing timeline.
Noise Removal for Inconsistent Backgrounds
The most common guest audio problems are consistent background noise — HVAC, laptop fans, room hum. AI-based noise removal tools handle these well. The algorithm analyzes the stable background noise floor and separates it from the voice signal.
What it won't fix:
-
Codec artifacts from the call recording. If the audio was captured from a video call, you may hear compression artifacts that sound slightly robotic or "watery." These are baked into the signal and don't respond well to noise removal — they're not noise, they're distortion.
-
Background voices or TV audio. If someone's roommate is talking in the next room, that overlapping speech is nearly impossible to separate automatically.
-
Intermittent sounds. A dog barking once mid-sentence, a phone buzzing — these require manual editing, not automatic processing.
Handling Level Differences Between Speakers
After noise removal, the next most noticeable problem in remote interviews is inconsistent volume. One guest is too loud, another is too quiet, you're somewhere in the middle.
The fix is per-track normalization before you mix them together. Aim for each track to hit around -16 LUFS before mixing (the standard target for podcast distribution), then adjust the mix so voices feel balanced.
Most editing software (Audacity, Reaper, Adobe Audition, Logic) has loudness normalization built in. Use it on each track before you start combining them.
The Hybrid Track Problem
Some recording setups capture both participants on a single mixed track — the "call audio" that records what everyone sounds like together. This is common when recording from Zoom directly into a screen recording app.
Mixed tracks are much harder to work with because you can't apply per-track processing. Noise removal that helps your guest might hurt your own voice in the same file.
If you're going to do regular remote interviews, it's worth setting up dual-track recording from the start. The technical setup varies by software, but the short version: route your own mic to one track and the call audio to another.
Specific Scenarios and Fixes
Guest is using a phone headset: The audio is often decent for intelligibility but has a thin, telephone quality. High-pass filtering around 100 Hz and a gentle presence boost around 3 kHz can help. Noise removal should still be run first.
Guest recorded from a video call on a laptop mic: This is the worst case. The laptop mic is omnidirectional, positioned far from the mouth, and picks up keyboard, room noise, and echo. You can clean up some background hum with noise removal, but the fundamental quality of the recording is limited. This is when you might consider re-recording if the content is important enough.
One segment has significantly different background noise: This happens when the guest moved rooms or something changed partway through — HVAC turned on, window opened. Handle each segment separately: select the affected section and process it independently rather than applying settings to the whole track.
Audible echo or feedback: If you hear the host's voice faintly behind the guest's words, it's bleed from the guest's speakers into their mic. Noise removal won't help — this needs to be prevented at the source with headphones. For recordings where it already happened, dynamic EQ and surgical gating can reduce it, but it's impractical to eliminate completely.
An Honest Expectation for Multi-Guest Shows
Even with careful preparation and good post-processing, a remote podcast will rarely sound as acoustically consistent as an in-studio recording. The goal isn't perfection — it's getting every participant's audio to a level where listeners aren't distracted by it.
Most listeners can tolerate some variation in recording quality across guests. What they find harder to tolerate: noticeable background noise that persists through the episode, or audio that drops intelligibility at key moments. Those are the problems worth prioritizing.
A good remote interview workflow: collect separate tracks where possible, apply noise removal per-track, normalize levels before mixing, and do a final listen on headphones before publishing. That sequence won't make bad audio into studio audio, but it will consistently produce something your audience can listen to comfortably.
The technical side of remote interview audio is fixable. The harder part is building the habit of catching problems before they happen — sending that pre-interview note, doing the sound check, having the quick conversation about headphones. Those five minutes of preparation prevent more problems than any amount of post-processing.
