7 votes
Accepted

When to apply noise reduction? Before or after other processing?

It really depends. Sometimes you need a global volume boost because the audio is too low anyway to correctly listen to the noise reduction you're applying. Sometimes there's a 50 or 60Hz rumble or ...
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  • 96
5 votes

Is there an equivalent to Audacity's noise reduction effect in other DAW?

Yes I made an lv2 plugin to be used with linux daws it's called noise-repellent https://github.com/lucianodato/noise-repellent
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  • 51
5 votes
Accepted

Is there an equivalent to Audacity's noise reduction effect in other DAW?

The ReaFir plugin that comes with Reaper is pretty excellent. And you don't HAVE to have Reaper to use it, because you can download all of their VST plugins free. ReaPlugs Download Insert the ...
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  • 341
5 votes
Accepted

When should a noise gate be applied?

I can see two reasons why you'd use a gate while recording instead of in editing : 1. You're broadcasting live. 2. You're using outboard equipment. A gate should, generally, be first in your audio ...
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  • 316
4 votes
Accepted

How do you identify clicks and pops in a spectral analysis?

In addition these spectral characteristics for clicks/pops, in your audio, localize some of your pop/crackle sounds by ear and scrub over them in the timeline, while looking at the spectrogram. You'll ...
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3 votes

How do you identify clicks and pops in a spectral analysis?

Welcome to SD. I think you might be placing too much importance on what this can do for you. Looking at what you have there, a lot of the noise floor is just broadband noise, I assume that came from ...
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  • 4,465
3 votes

iZotope RX2: limiting the noise profile bandwidth

What is your use case scenario? Field recordings or vocals? You can if you have the advanced version of 2 or 3. You could also use the 'envelope' function to create a frequency curve that allows you ...
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  • 2,906
3 votes

When to apply noise reduction? Before or after other processing?

It does depend but most will apply it early in the chain especially if it's an offline process like Izotope Denoiser. It's much easier for the software to work if the noise floor isn't moving around ...
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  • 1,304
3 votes

How to get background conversation in a sound record?

Use RX 5 Audio Editor. You will probably get better results than with Audacity. RX 5 allows you to recover certain parts that are missing. Many quality presets are provided and you'll also find ...
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  • 1,095
3 votes

Does a lav mic pickup noise?

'Sensitivity' is a measure of 'how much electric it puts out for a given level of sonic input' It has nothing whatsoever to do with its ability to separate wanted from unwanted sound. Microphones ...
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  • 7,024
3 votes

What is the best way to reduce background noise on a video recorded with a camcorder (background chatter)?

There are automated algorithms like those you tried in iMovie, the ones in Audacity might be worth a try but if you want better results you should individually edit phrases. Software like izotope RX ...
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  • 844
3 votes

How can I eliminate sounds below a certain threshold?

It really depends on the material; are these sounds that you want to remove truly peaking at a lower level than every bit of the speech? How about in loudness or 'energy'? You need to look into the ...
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  • 2,166
3 votes
Accepted

Denoising studio induced noise and noise due to poor recording

Firstly, do any and all processing in WAV files. If your source material is on CD, then rip to 44.1kHz/16bit WAV and process at 24-bit in your software. Do not transcode via mp3. Tracks like 104b ...
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  • 8,374
2 votes

Fix for terrible "Hard Drive Noise" Audio Interference?

Have you considered investing in a power conditioner? They are used in most studios and also live venues. It's basically like a rack mounted power bar, but it does so much more than just basic surge ...
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  • 465
2 votes

There is static when I export video where there is none in editing (premiere pro)

I realize this comes a bit late, but what the heck.... I've run into this same phenomenon. What's happening is a natural result of using the Denoiser audio plug-in in Adobe Premiere. Unfortunately, ...
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2 votes

Reducing Noise in Feynman Lectures

Unless there is a pattern to the audio, the rule is generally crap in, crap out with audio. You can remove the parts of the spectrum that the noise is primarily on or try to do pattern matching to ...
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  • 8,081
2 votes

Noise Reduction when recording changes volume

Just an idea - not sure this answers your specific question because I don't use Adobe Audition, but might solve the problem anyway - cut the track at the problem spot so that the four second fade is ...
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2 votes

When to apply noise reduction? Before or after other processing?

Do some tests using all permutations and trust your ears. The more you take this experimental approach to your work the better idea you will have about which techniques suit which circumstances. ...
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  • 136
2 votes
Accepted

Audio Signal Difference Extraction

In one sense, the answer from "audionuma" is correct, a similar process is possible in both Ableton and Audacity. In Ableton, all the tools you need to do this are contained in the "Utility" plug-in, ...
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2 votes

Extracting human vocals from really damaged audio?

There are two basic ways I remove noise from an audio: You can use a visual equalizer(e.g- FL studio Parametric EQ2 or fabfilter Pro Q) that show the frequencies of where all sounds in your vocals ...
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  • 51
2 votes

Extracting human vocals from really damaged audio?

The best tool for audio restoration nowadays seems to be Izotope RX. If you don't have access to the software you can still try selective eq-ing and stereo cancelation, yet even with the most ...
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  • 844
2 votes

Mad scientist: How to cancel out hum of known amplitude from signal of unknown amplitude?

For there to be any chance of 'subtraction' to work, there must be a phase-relationship between the two signals, which there is not likely to be in any of the cases you suggest. To understand why ...
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  • 8,374
1 vote
Accepted

I just got a Blue Snowball Ice and it picks up my keyboard with Cherry Mx Blues

Aren't Cherry MX Blues practically designed to be loud? I heard once that DasKeyboard used to offer ear plugs as an accessory (as a joke)... I love my mechanical keyboards, but I use MX Browns any ...
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  • 1,547
1 vote

Crazy Question: Is it possible to clean up speakerphone sound - (not music, just speaking)?

Can you change the original signal, before it's sent? If you can, removing any unneeded frequencies might be a start to limit the frequencies that cause the distortion. Like high and low end. An ...
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  • 2,166
1 vote

Crazy Question: Is it possible to clean up speakerphone sound - (not music, just speaking)?

Sound can usually be improved on the receiving end. But there is no general advice, the approach depends on your specific VoIP termination, sound profile, site setup, etc. Sound engineering is also ...
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  • 181
1 vote

Crazy Question: Is it possible to clean up speakerphone sound - (not music, just speaking)?

Sadly phones are not great sound reproduction devices. I've not see a business phone system (and I've seen many) where the sound can be changed in any way except volume. Sometimes a problem is that ...
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  • 2,030
1 vote

Eliminate sparrow chirp from sound track

Since you are asking how to remove these bachelor sparrow chirps from an already existing recording I would suggest using a spectral editor like the one found in Adobe Audition or, more recently in ...
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1 vote

Eliminate sparrow chirp from sound track

Buy a gun failing that, try some temporary soundproofing on the window. Higher frequencies are the easiest to dissipate. And maybe move the mic/setup around.
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  • 2,166
1 vote

Eliminate sparrow chirp from sound track

You will need to employ some EQ-kung fu of precise editing, and equalise unwanted frequencies out manualy. Try multiple very narrow bands (as opossed to a high-shelf EQing, which would hamper all the ...
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  • 271

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