Light Clicking Noises During Audio

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Light Clicking Noises During Audio

Permanent link to this post Posted by EricLeonard » Sun Aug 06, 2017 2:46 am

I'm using Audacity 2.1.3 on my Windows 10 computer.

I'm getting additional light clicking noises during audio that I have created as follows. . .

* Recording from a Yeti blackout microphone with the gain to 1/4 and the pattern to cardioid using replay video capture to create a .wmv file.

* Bringing that file into Windows Media Player, and saving it as a .mp4 file so that it can be processed in Audacity.

* In audacity, I can improve things greatly by first running it through the noise reducer with default params, and then running it through the low pass filter with a freq of 2kHz and a rolloff of 24 dB/octave. I'm not crazy about the effect that the LPF has on my voice, but I've come to terms with it. I export audio from audacity to create a .wav file.

* Importing the modified audio back into Windows Media Player and then creating the file that I upload to YouTube.

After doing all of this, I still hear a level of noise in my audio that I would prefer to further reduce. The noise is most evident when I listen using my Ipad Mini 4.

I am uploading a particularly troublesome 10 second segment of this audio that is taken from my math video with 5 seconds of sample noise prepended. No audio processing has been done to this segment.

I have tried doing things with noise gate and de-clicker as well. The combo of noise reduction and LPF mentioned above seems to give the best results.

Any ideas would be most appreciated.

Thanks!

Eric
Attachments

[ Play Quicktime file ] YtaAuddSampleOfTroublesomeAudio.mp4 [ 775.78 KiB | Viewed 135 times ]

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 2:54 am

* Recording from a Yeti blackout microphone with the gain to 1/4 and the pattern to cardioid using replay video capture to create a .wmv file.

Is that the first place you get the sounds?

Can you record a test where you make a WAV instead of WMV, and them post it here? Do not process or filter anything.

http://www.kozco.com/tech/audacity/Test ... _Clip.html

Koz
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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by EricLeonard » Sun Aug 06, 2017 3:06 pm

Sorry. Despite what I promised in my previous note, I ended up sending processed, compressed audio.

I am including a .wav file that was created per your instructions with a quiet segment at the end.

Please let me know what you think.

Thank you in advance!

Eric
Attachments
AudbAudacityRecording.wav
(1.67 MiB) Downloaded 5 times
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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 5:45 pm

Listening now.

There's a standing joke about how hard that stupid 20 second sound clip is. About a third of performers who try it do something wrong.

A very common problem is two seconds of Room Tone that features scratching of legs, rearranging of shirts or shuffling of furniture. It's freeze and hold your breath. You need to get this right because if you publish, ACX is going to use that segment to determine whether or not you pass quality control.

As we go.

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 6:02 pm

That's what I thought. I applied the AudioBook Mastering corrections and a very gentle noise reduction and your clip meets ACX AudioBook requirements. See sentence two-thirds down.

Screen Shot 2017-08-06 at 10.50.33 AM.png
Screen Shot 2017-08-06 at 10.50.33 AM.png (47.11 KiB) Viewed 119 times


I know you're not reading for audiobooks, but that's a pretty good test to pass for anything else.

And I don't hear any clicking.

So something between the initial reading and your own quality control is actually doing that. It's also possible your recording computer is doing that when it feels like it. Those are the most fun to fix.

I have a couple of production comments, too, but that's later.

Koz
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AudbAudacityRecording-ACX-Corrected.wav
(1.67 MiB) Downloaded 5 times
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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 6:04 pm

Are you complaining about your end-of-sentence lip smacks? That's my trick. I can't read without unconsciously putting those in.

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 6:06 pm

I changed sound system and now I hear the ticks.

That is very strange.

As we go.

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 6:12 pm

Getting closer. The ticks are far worse on laptop speakers or any sound system that tends to punch high, crisp tones. This brings us back to your comment of getting rid of them by muffling the performance. I'll catch up to you any minute now.

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by kozikowski » Sun Aug 06, 2017 6:19 pm

Is your microphone a Yeti Pro? "Yeti Pro" is a proper name and it's the more expensive of the two Yeti models. I have seen the regular Blue Yeti listed as a "Pro Yeti," which causes, I'm sure intentionally, no end of confusion. There is no Pro Yeti.

Does your microphone have provision for an XLR connection on the bottom?

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Re: Light Clicking Noises During Audio

Permanent link to this post Posted by EricLeonard » Sun Aug 06, 2017 11:34 pm

Hi Koz.

Thank you so much for all of the attention that you're giving to my issue! :)

I'm thinking that the word "crackling" better fits what I'm hearing than "clicking". I'm glad that you're able to hear what I'm talking about. The part that comes after my sentences, I can generally hand edit out, though doing that is a bit tedious. It's the portion that occurs during my speech that I don't know how to manage at all.

I'm always amazed how products go to such lengths to hide their vernacular names. The box that my mic came in says "Yeti Blackout". The Amazon link that I purchased it from refers to it as "Blue Yeti USB Microphone - Blackout Edition". The Amazon link itself is https://www.amazon.com/gp/product/B00N1 ... UTF8&psc=1. This mic was rated very well and I was hoping that the $130 that I spent would buy me out of my problems.

I don't see any XLR connection on this mic. Just a USB and headset port.

I agree that this crackling is more obvious when listening through some devices vs. others. I often think I have a good result when I listen on my PC or external speaker. But, then when I put it up on YouTube (thinking that I'm done) and listen to my Ipad, the crackling comes through.

I ran this 20 second clip through Audacity's noise reduction using default params and then added it to an unrelated math video sequence in Windows Media Player to create a .mp4 file that is available at https://youtu.be/8JsthqkCx1g on YouTube. I can still hear some crackling that I'd like to get rid of.

I'm eager to hear any other comments that you have. Please don't feel like you need to limit yourself to my questions. As I work on these math videos, I've been begging my friends for actual critiques instead of the usual, but useless "sounds great."
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