Zoom H2N-noise when recording direct to Audacity thru USB audio interface

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kozikowski
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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sat Apr 17, 2021 11:58 pm

I'm stumped why a recording in GarageBand comes in at almost half the background noise that Audacity does. Neither one applies effects, filters, or corrections during recording (that I know of) and they're both using the identical analog converter (the H2n).

If somebody presented that to me in a movie script, I would tell them to rewrite the scene with more believable symptoms.

There are danger signals.

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There's a difference between squeaking past ACX standards and presenting for publication.

Peak at -3dB is dangerous. The standard is -3dB, but the conversion between your edit master and the MP3 submission isn't exact. That's why the Mastering Limiter setting is -3.5dB to soak up any errors rather than -3dB even. The other settings just slide by with a little olive oil applied.

Is the setup current? Can you announce a test?

https://www.kozco.com/tech/audacity/Tes ... _Clip.html

Use GarageBand. Record it just like that. No editing unless it goes long. The forum has a data limit.

Koz

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 12:01 am

Stay in Audacity 2.4.2. There's a new Audacity 3 coming out.

Koz

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 4:43 pm

I'm on the edge of my seat for that sound test. It's only ten seconds. Hold your breath for two seconds and announce for eight. Export WAV. Couldn't be simpler.

Koz

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by jcvoiceover » Sun Apr 18, 2021 6:15 pm

kozikowski wrote:
Sun Apr 18, 2021 4:43 pm
I'm on the edge of my seat for that sound test. It's only ten seconds. Hold your breath for two seconds and announce for eight. Export WAV. Couldn't be simpler.
Sorry, got a little busy over the weekend. Here's one through GB, one through Audacity. Both direct USB audio i/f connects to macbook using the H2N.
Voice Sample-USB Direct to Audacity.wav
(1.68 MiB) Downloaded 1 time
Voice Sample-USB Direct to Garage Band.wav
(1.68 MiB) Downloaded 2 times

jcvoiceover
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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by jcvoiceover » Sun Apr 18, 2021 7:10 pm

Good Lord, bit of a fly in that ointment. I just listened back to that and they sound the same-same low rumble noise. That is NOT how they come out when I export a WAV from GB and edit it in Audacity. As soon as I can get to the studio again I'll re-record and a version of what I'm putting out.

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 7:12 pm

There's a listening trick. Roll the clip forward and set your voice for pleasant listening volume. Then roll it back and listen to the whole thing without touching anything.

The first analysis is the GB clip just Mastered. Without doing anything but those three gentle effects, you meet ACX no trouble, and with a little elbow room to spare.

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But being professionally obsessive, I applied gentle Noise Reduction of the Beast (6-6-6).

Screen Shot 2021-04-18 at 11.38.54 AM.png
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That should sound exactly like you and easily meet audiobook standards. If you do this under Audacity 3.0 (or whatever it turns into) it's two steps. I melted Mastering into one Macro step. That may need to wait until they get the new program sorted.

It's a common mistake to go Diving For Noise. It is not valid to crank your player volume all the way up during the Room Tone segment. Set your voice and listen to everything else at that volume.

As far as I can tell, you could submit that successfully.

I'll come back with details, but I'm off to play with the Audacity sample.

Koz

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 7:16 pm

same low rumble noise.
Mastering takes care of that. The Mastering Suite is a "suite." A harmonious grouping. You have to use all three tools in order, don't add any in the middle and don't leave any out. They clean up after each other.

Don't go nuts until I'm finished.
That is NOT how they come out when I export a WAV from GB and edit it in Audacity.
Did you pick up the wrong sound files? That never happens to me [cough cough].

Koz

jcvoiceover
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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by jcvoiceover » Sun Apr 18, 2021 7:32 pm

Did you pick up the wrong sound files? That never happens to me [cough cough].
Koz
I fixed your scrambled quotes.


HA! I got the right ones, I think switching between programs on my jalopy computer, it messed with the audio i/f? I don't know - that was definitely a first Thank you for all those tips on how to apply effects and master. I'm gonna link the newer takes, but it sounds like it really doesn't matter. I'll give the tips a try and see how it all fares for me. I've got to go into editing mode for a day or so, but I'll check back with my experience.

New versions below - there is definitely a difference as one has the low rumble(Aud), the other (GB) sounds totally clean. Believe me I'm of the mindsets: if it ain't broke..., and the simplest solutions is usually best. Lemme know what you think when you're able, and as always, thank you for your time and expertise! The forum is telling me the GB one is too large, so here's a DB link to it along with the direct to Audacity version again.
Voice Sample-USB Direct to Audacity.wav
(1.66 MiB) Downloaded 2 times
https://www.dropbox.com/s/7sdj6ufm5hdsx ... d.wav?dl=0

kozikowski
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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 8:21 pm

One more. Are you creating stereo tracks for a reason?

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There's no good reason to have Left and Right versions of your voice, unless there's a client who wants it that way. ACX would just as soon you submitted in mono.

Screen Shot 2021-04-18 at 1.16.52 PM.png
Screen Shot 2021-04-18 at 1.16.52 PM.png (54.77 KiB) Viewed 44 times

From your stereo track > Drop-Down on the left > Split Stereo to Mono.

[X] delete one track.

As we go.

Koz

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Re: Zoom H2N-noise when recording direct to Audacity thru USB audio interface

Post by kozikowski » Sun Apr 18, 2021 8:39 pm

Aaaaaaand Voice Sample-USB Direct to Audacity.wav failed.

Screen Shot 2021-04-18 at 1.31.18 PM.png
Screen Shot 2021-04-18 at 1.31.18 PM.png (29.95 KiB) Viewed 41 times

I just know we're going to have a really good laugh about this when you figure out what's going on.

Koz

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