Zoom H1 noise removal?

relaxvideo wrote on 1/26/2017, 3:13 AM

I recorded some narration in quiet room, with good dynamic range, but when the speaker doesn't speak, i hear background noise. As i see this is normal with the H1. What do you use for remove this noise? Which filter? Built in or some 3rd parties? What settings?

Any other fx for making the sound more rich and professional?

Thanks for your tips!

Comments

NickHope wrote on 1/26/2017, 4:12 AM

Noise reduction: https://www.vegascreativesoftware.info/us/forum/noise-reduction-options--104948/

For narration I compress with WAVES Renaissance Vox mono, mainly because there are fewer settings for me to get wrong than most compressors. I don't really trust my audio production ability. I think I got it in this bundle or similar. I couldn't vouch that it's really any better than the compressors shipped with Vegas, or other free VSTs that are available like Kjaerjus Classic Compressor. These are the settings I use:

But bear in mind this: https://www.vegascreativesoftware.info/us/forum/audio-glitch-with-waves-plugins--105028/ I haven't really experienced that myself, although I have found that it's wise to render my audio to a WAV file rather than directly into my final web or DVD render due to some slight audio artefacts that I think came from using RVox.

relaxvideo wrote on 1/26/2017, 4:23 AM

thank you Nick

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Dexcon wrote on 1/26/2017, 5:17 AM

Any other fx for making the sound more rich and professional?

You might like to check out iZotope's Neutrino - and it's free.  Neutrino scans the selected audio and provides a recommended EQ etc mix.

The paid version, Neutron, allows for far more options and control over the settings, and has a whole lot of settings for voice/vocals.

iZotope also has a product called Nectar which has a range of adjustable presets for voice/vocal.

Of course, Vegas Pro has in-built a number of EQ and compression plugins under Audio FX - which have help info. 

If Vegas Pro's noise reduction plugin and the other suggested free plugins don't meet your needs, and you are willing to go down the paid route, consider Magix's SpectraLayers or iZotope's RX5.  They are not inexpensive but are really good for the more challenging tasks.

 

 

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relaxvideo wrote on 1/26/2017, 5:57 AM

Thanks for the tips Dexcon!

Cornico: yes, i use this too, but like something better, more professional output :)

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relaxvideo wrote on 1/26/2017, 12:06 PM

Dexcon:

i installed iZotope's Neutrino, add the fx to the voice, but i cannot hear any difference while i change amound/detail and type of fx. What do i wrong?

Tried with V11 and V12, all 64bit

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MartinE wrote on 1/26/2017, 12:43 PM

Relaxvideo, when you say background noise, do you mean electrical noise (hiss) or actual ambient room noise. I use an H1 (2 in fact) a lot and the mic/line input doesn't have the best S/N ratio unless you have a mic with a high output.

relaxvideo wrote on 1/26/2017, 12:50 PM

i mean electrical noise

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RedRob-CandlelightProdctns wrote on 1/26/2017, 1:28 PM

Theoretically, the "Noise Gate" in Vegas will silence the audio on a track if it falls under a certain dB level. This does work, but may (or may not) produce the overall effect you're seeking.

I usually use a combination of equalization to notch out specific machine hums and reduce very high-frequency hiss, and Adobe's Sound Booth (v1) which came with CS3 for noise reduction using a noise sample. I suspect there are way better ones out there, but it's what I've got... I may check out some of the others suggested above. :)

Unrelated, do you work with long clips on the H1 or short? I've found that long (e.g. 1 hr) clips brought in from the H1 (and other Zooms) drift somewhat, having to do with clock issues in their products. Easy to fix but a bit of a PIA

 

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relaxvideo wrote on 1/26/2017, 1:37 PM

just short 3-5 min videos

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ByronK wrote on 1/26/2017, 5:55 PM

I use izotope rx noise reduction and get great results. There's also Audacity (free) which has a noise reduction plugin.

NickHope wrote on 1/26/2017, 10:28 PM

Dexcon:

i installed iZotope's Neutrino, add the fx to the voice, but i cannot hear any difference while i change amound/detail and type of fx. What do i wrong?

Tried with V11 and V12, all 64bit

Maybe this can help (although it's very brief): https://www.izotope.com/en/community/blog/tips-tutorials/2016/09/getting-started-with-neutrino.html

Musicvid wrote on 1/27/2017, 12:03 PM

I think you have auto gain (agc) turned on at the recorder.

Turn it off and the problem should go away.

If not, post a link to a sample file.

relaxvideo wrote on 1/27/2017, 12:18 PM

No, i'm not that beginner :)

Of course i used manual level, set to 50.
Unfortunately this Zoom H1 does have background noise.
Download this sample: https://goo.gl/GhKbvw

Nick: still no effect, nothing. Dont know why. I tried as event fx and as track fx too.

https://s27.postimg.org/c5ou97zdf/image.jpg

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john_dennis wrote on 1/27/2017, 1:57 PM

I processed the Sample.wav in Sound Forge 9 and produced the S/N ratio of a late 1960s consumer tape recorder.

First, I increased the volume so I could hear it.

I applied a 60Hz Notch filter.

Then, a Compressor/Gate with settings changed as follows:

Finally, I reduced the volume -6db.

 

My result is here.

If you don't like my result, no problem, as I drank two fine cups of coffee while I was doing it.

 

relaxvideo wrote on 1/28/2017, 2:01 AM

John, thanks for your effort.

Your result sounds a little "dirty" to me, has noise even when i hear the voiceover.
I tried noise reduction with the recommended Audacity, and it worked great.
Hear: https://drive.google.com/open?id=0BzldgVVPxli7VkVhV01URlQ2amM

In vegas i added a little EQ, Compressor and reverb.
I like the result (especially with music):
https://drive.google.com/open?id=0BzldgVVPxli7NXNUV0Y0Q19XZFU

What are your opinions?

So this Zoom H1 is only good for recording "late 1960s consumer tape recorder" quality?
Any other user can confirm this or i have a bad unit?

thx

Last changed by relaxvideo on 1/28/2017, 2:08 AM, changed a total of 1 times.

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ByronK wrote on 1/28/2017, 3:12 AM

That sounds pretty good usable audio to me!

As far as these portable recorders, I have a Roland R9 and two TASCAM DR-40 recorders. They all have a noticeable noise floor that I have to remove or have a high enough audio level to cover up. I use them to record music so the background hiss is not as noticeable as speech because of the silent pauses.

Arthur.S wrote on 1/28/2017, 10:43 AM

Audacity is free, and makes a decent job of background noise reduction. I've used it to get rid of the noise from air conditioning units for instance. There are plenty of tutorials around for it. Do you use the internal mics on the H1? I got better results with an external mic when I used to use an H1.

relaxvideo wrote on 1/28/2017, 10:46 AM

Yes, i know its free, i used it :)

Yes, i used the internal mics. That's why i bought.

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Jam_One wrote on 1/28/2017, 11:58 AM

https://yadi.sk/d/5USiuub53BVykS

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I *believe* excellent results can be achieved with 'NoiseReduction V.2' or with 'SoundSoap V.4+' plus an Equalizer of sorts and surely some "work of hands".
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Last changed by Jam_One on 1/28/2017, 12:09 PM, changed a total of 3 times.

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Jam_One wrote on 1/28/2017, 12:19 PM

... professional ...

 

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john_dennis wrote on 1/28/2017, 1:05 PM

"Your result sounds a little "dirty" to me, has noise even when i hear the voiceover."

You are correct that nothing I did would have affected the noise when the speaker was speaking, predominantly during long silence.

My comment about the S/N ratio of a late 1960s tape recorder was based on the final output noise floor in the quiet areas, ~-51 to -56db. See picture.

In order to do a valid comparison of all the cases, I normalized each and present the Sound Forge statistics of the quiet areas as follows:

sample-nr

sample-nr-reverb

and the big winner in the "noise floor" competition, Jam_One's ZOOM-H1_sample

On the efficacy of the Zoom H1 as an acceptable field recorder, there are so many variables that I wouldn't comment. I will offer this analysis of your Zoom H1 recording of this particular speaker at this particular distance with this particular ambient background noise.

Your original sample normalized to match your sample-nr-reverb final volume level. 

PS

I'm getting to where I can't hear this stuff anyway.