Room Reflections & Reverb: Fix Podcast Audio Problems

Robert Van Vranken
9 min read
TL;DR: Reverb and room reflections occur when sound waves bounce off hard surfaces like walls, ceilings, and floors, creating echoes that make podcast recordings sound hollow and unprofessional. To fix this problem, choose recording spaces with soft furnishings like carpets and curtains, avoid rooms with concrete or glass surfaces, add acoustic panels to absorb sound waves, or use isolation shields and reflection filters around your microphone.

Quick fixes for better audio:
  • Room selection: Choose spaces with existing soft materials that naturally absorb sound
  • Acoustic treatment: Install foam panels on walls and ceilings to control reflections
  • Isolation shields: Use portable reflection filters around your microphone ($50-200)
  • Microphone choice: Select dynamic mics that reject room noise better than condensers
  • Furniture placement: Add bookshelves, rugs, and curtains to break up sound waves

Today, we are starting a new video series around podcasting best practices: Podcast Pro Tips. In episode 1, we explain how reverb and room reflections make a mess of your audio and can make it hard for your listeners to engage with and listen to your content. We show ways to mitigate reverb and room reflections, and talk about room choices, furniture, gear that helps reduce reverb and reflection, and more!

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Transcript:

Table of Contents

What are Reverb and Room Reflections in Podcast Recordings?

Reverb is the persistence of sound after its source stops, caused by waves bouncing off hard surfaces. Room reflections are direct sound bouncebacks that create hollow or distant echoes, both degrade podcast audio clarity.

Reverb is short for reverberation. It is the persistence of a sound in a space after the original sound has been created. It happens when sound waves reflect off of surfaces like walls, ceilings, and floors, and cause a series of echoes that blend together.

Room reflections, compared to reverb, are similar. They occur when the sound waves bounce back directly from these surfaces, creating distant echoes that can make your recordings sound hollow or distant. Both, reverb and room reflections can make a mess of your audio and can make it hard for the listener to engage with the conversation and listen to your content.

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How Can You Reduce Reverb and Room Reflections?

Reduce reverb by recording in rooms with soft furnishings, carpet, curtains, and furniture naturally absorb reflections. For more control, hang acoustic panels on walls and ceilings to actively dampen sound and minimise room echo.

As you could have guessed, the room you record in has a huge impact on the quality of that recording.

Ideally, you want to pick a room that already has things in it that will start to minimize reflections. That can be as simple as furniture, curtains, or carpet. Avoid rooms with lots of hard surfaces, like big walls, concrete, wooden floors, or big glass windows. Also, if you want to take it a step further and treat your room for audio specifically, you can actually invest in a set of acoustic panels.

These panels are designed to absorb sound and can be hung on your walls and your ceiling and really do a lot to help with reverb and reflection in the room you’re recording. They even come in a variety of colors and styles, if you want to dial in the look of your recording studio.

Do Reflection Filters and Isolation Shields Improve Podcast Audio Quality?

Reflection filters and isolation shields reduce room reflections and improve recording quality, particularly for portable setups where you cannot control the recording environment. Simply place your microphone inside the shield for cleaner audio.

Okay, so maybe building a studio might be a bit of a stretch, or you just don’t have a bunch of Persian rugs just lying around to style your space. What then? Fortunately, it’s never been a better time to start a podcast, even if you’re just curious and want to dip your toes in.

There are plenty of reflection filters and isolation shields available online or at most music stores — particularly useful if you’re using a portable podcast setup and can’t control your recording environment. All you have to do is buy it, place your mic on the inside, and you’re already one step ahead at controlling those pesky room reflections that’ll make a mess of your recordings. Of course, once the room has been set up, picking the right podcast microphone is going to be the next crucial step in making your podcast sound professional.

5 Tips to Fix Reverb and Room Reflections

To reduce reverb and room reflections, choose soft-surfaced rooms, add rugs and furniture, use acoustic treatment panels, record in a small closet, and position your mic to minimise sound bounce-back.

  1. Choose a room that isn’t made of glass, concrete, or wood if you can help it.
  2. Add some rugs, furniture, and other things that’ll help naturally absorb the sound waves in your room.
  3. If you can, consider getting some acoustic panels to minimize reflections even further.
  4. If you can’t do much with your room, look into an isolation shield or a reflection filter.
  5. Pick the right microphone.

By following these simple steps, you’ll significantly reduce reverb and reflections and improve podcast recording. If you’re building your recording setup from scratch, a podcast equipment bundle can help you source mics, headphones, and other essentials at once.

What we have discussed in this episode of Podcast Pro Tips

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Frequently Asked Questions

What is the difference between reverb and room reflections in podcast recordings?

Reverb is the persistence of sound after it’s been created, caused by sound waves bouncing off walls, ceilings, and floors and blending into a wash of echoes. Room reflections are more direct bounces off those same surfaces, creating distinct echoes that make your voice sound hollow or distant. Both problems hurt listener engagement and make your podcast feel amateurish.

What kind of room is best for recording a podcast?

The best recording spaces already have soft materials in them, think carpet, curtains, upholstered furniture, and bookshelves, that naturally absorb sound waves before they can bounce around. You want to avoid rooms dominated by hard surfaces like concrete walls, wooden floors, or large glass windows, which are basically echo machines. Even small changes like throwing down a rug or closing the curtains can make a noticeable difference.

Do acoustic panels actually help with podcast audio quality?

Yes, acoustic panels are an effective way to control reverb and room reflections if you want to treat your space properly. They’re designed to absorb sound waves and can be mounted on walls and ceilings to dramatically clean up a room’s acoustics. They also come in different colors and styles, so you don’t have to sacrifice the look of your space to get better audio.

What is a reflection filter, and does it help with room reflections?

A reflection filter, sometimes called an isolation shield, is a portable curved panel that wraps around the back and sides of your microphone to stop sound from bouncing off nearby surfaces and into the mic. It’s a practical solution if you can’t treat your whole room or if you’re recording in different locations. You simply place your mic inside it, and it immediately reduces the room reflections that muddy your recordings.

What type of microphone is better for reducing room noise, dynamic or condenser?

Dynamic microphones are generally the better choice for untreated or imperfect recording spaces because they’re less sensitive and naturally reject more of the ambient noise and room reflections around them. Condenser microphones pick up more detail, which sounds great in a well-treated room but works against you in a room with hard surfaces and echo. If you’re still sorting out your recording environment, a dynamic mic gives you more forgiveness.

Can I fix reverb and room reflections without spending a lot of money?

Absolutely, several effective fixes cost nothing at all. Recording in a room with existing soft furnishings, closing curtains, or even recording in a closet full of clothes can significantly reduce reverb without any gear purchases. If you want a dedicated tool, entry-level isolation shields are available for around fifty to two hundred dollars and make a real difference for the price.

How do furniture and soft furnishings reduce reverb in a recording space?

Soft materials like rugs, couches, curtains, and bookshelves break up and absorb sound waves, keeping them from bouncing back toward your microphone. The more irregular and soft the surfaces in a room, the less chance a sound wave has to bounce cleanly and create an echo. This is why a furnished living room often records better than an empty bedroom, even if the empty room is bigger.

Do I need to build a professional studio to get clean podcast audio?

Not at all, podcasters regularly get great results by making smart choices about their recording space and adding a few low-cost treatments. Choosing the right room, adding soft furnishings, and using a reflection filter around your microphone can take you most of the way there without any construction. A dedicated studio is a nice upgrade if you get serious, but it’s far from a requirement when you’re starting out.

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