Cleaning Up Webcam / Zoom Audio

[mdvirtual]

Hi All,

I haven't been of the forums in a while, had a question I was hoping to pose. Since COVID I've been getting a fair number of projects where the audio was recording with low quality bandwidth limited sources (documentaries with Zoom interviews, corporate videos recorded with laptop or webcam mics). The audio suffers from the expected issues - limited bandwidth, room reflections, HVAC noise, extraneous sounds, and compression artifacts. Mic position is often less than ideal, with placement favoring video framing over audio quality.

I've been leaning heavily on Izotope RX for dereverb, declick, spectral denoise and spectral editing. I'll sometimes use multiband compression to tame boominess or harshness, or Waves Vitamin to recreate missing top end. As you would expect the results can be less than stellar. It's a juggling act of improving audio quality without sounding overprocessed or accentuating other undesirable aspects of the audio.

I was wondering if others are dealing with similar audio and had any mixing tips or tricks to share. I searched the forums and didn't see similar posts.

Thanks in advance!

[LDS]

ACON Deverberate I have found can work quite well for getting rid of those strong early reflections in Zoom/Teams/etc recordings. It has a separate early reflections function and you can also mix back in some of the reverb tail, so it can sound closer yet not artificially dry. There is a new module in RX designed to rebuild lost high frequencies in these kinds of situations. It can work very well, but it seems like it is so processor intensive that it makes it less than practical to use on longer recordings. It seems like you use a bunch of what I would use. I generally avoid multi band compression, as this stuff is usually pretty nuked already. A bit of notch EQ for the bloat or boom, or de-essing or EQ to tame the harshness.

If there is the opportunity, intervening in the setup/record process and getting that initial microphone placement sorted can pay dividends. A lot of people have multiple devices these days, and a bunch of the webcam/zoom audio apps allow for some sophisticated/interesting setups. Like audio via iPhone, video via laptop.

[mdvirtual]

Thanks LDS, all good thoughts.

I'll check out Deverberate, that sounds promising. Agreed on the multiband, although I find it useful in certain situations. A lot of times a simple notch EQ is sufficient. I wish I could intervene earlier. A lot of this has been coming to me late in the process, so it's a matter of making the best of it.

[its2loud]

Take a look at Descript’s Studio Sound feature. It’s not the easiest workflow but it works well.

[mdvirtual]

Very interesting! I tried Studio Sound on a few clips with good results. It didn't do as well on some of my worst case audio, but neither did RX.

I agree on the workflow. It would take some getting used to. Certainly a good tool to know about. I'd love to see them release a plugin version with the ability to fine tune the processing beyond the 0-100% slider.

[mattrixx]

Originally Posted by its2loud

Take a look at Descript’s Studio Sound feature. It’s not the easiest workflow but it works well.

It's actually very good. Can be a bit over the top at times, but the cool thing is, that it's seems to be sample accurate to a degree. So you can parallel the Descript Studio Sound (processed) track to your original and mix to taste.

[mdvirtual]

That's interesting. I wondered if their 0-100 % slider was just a wet/dry mix. They write a Studio Sound file to the disk when you apply it, so it would make sense that the slider is a blend between the original and processed files.

[resonantRhythm]

When RX fails me, which is most of the time I turn to the Zynaptic tools.

UNVEIL is a godsend for removing room reflections
UNFILTER is fantastic for returning the perception of a better quality mic for zoom audio.
UNCHIRP can sometimes help in a pinch but I usually prefer UNFILTER.

I'd say the only downside to the Zynaptic tools is that it can EASILY be overdone and their sweet spot is often narrow...but when you find it, it'll work miracles!

Waves Clarity really is good for how simple it is!

[seanmccoy]

+1 for the Zynaptiq tools.

[lucienpalmer]

RX has a new tool to rebuild missing frequencies in data compressed audio. I'm using it a ton on a doc feature right now. I would remove any unwanted verb, then unwanted noises, then rebuild missing higher frequencies, then smooth with EQ.