High noise floor, hiss, high beep sound

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Re: High noise floor, hiss, high beep sound

Permanent link to this post Posted by kozikowski » Wed Apr 12, 2017 10:06 pm

Cool.
Abbreviated version:

I cut off the last three seconds of silence. Some of tools work on overall loudness and density of show sound, so putting a lot of silence in the show can throw them off.

Your microphone creates tons of low tone rumble. I can't tell if you live near an airport or metro-rail (or the microphone just does that), but first step is apply a custom rumble filter.

I applied a custom RMS (loudness) filter that jacks the loudness up to pass ACX.

Then I applied Audacity normal Limiter to tame those unruly blue wave tips (too tall).

Screen Shot 2017-04-12 at 14.34.20.png
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Then I went to make tea.

I did not find any Yeti Curse beeping or other whine sounds. You may have killed those when you got closer to the mic and/or louder in live presentation. So I didn't need the Yeti Curse filter or Trebor's custom programming (cousins of each other). The closer you get to ideal in real life, the less patching, correction, and filtering you need.



=============== Details ====================

— Get and install SetRMS and LF-Rolloff.
viewtopic.php?p=318684#p318684

Custom Rumble FIlter:
Effect > Equalizer: LF-Rolloff for Speech > OK.

Apply SetRMS and Limiter.
viewtopic.php?p=318102#p318102


Run ACX-Check.

You may have some of those tools already, and this is a little out of order because I don't have a handy, pre-baked kit of instructions to copy and paste. Actually, I do, but it keeps changing.

I think I said earlier, this is only to pass technical specifications. If you think your voice has theatrical or esthetic problems, you can take care of that now, but know that if you go too far, you can throw off the other readings.

The gentle rain-in-the-trees background sound (ffffff) usually passes if it's low enough. They can object if you also have other tones or whiny sound in addition.

That brings us back to finding out if your company follows ACX AudioBook Recommendations. I don't think you ever said.

Koz
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kozikowski
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Re: High noise floor, hiss, high beep sound

Permanent link to this post Posted by kozikowski » Wed Apr 12, 2017 10:47 pm

There is one other noise trick.

There is an irresistible urge to crank the volume in the player all the way up when you're testing for noise. Resist this urge. Set the player for a comfortable presentation volume (remember the goal is someone telling you a juicy story over cups of tea). Then, without changing the volume, run the file up to the noise and listen to it. When I do that with your patched clip in my normal office, I can't hear any noise.

Koz
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Re: High noise floor, hiss, high beep sound

Permanent link to this post Posted by chrisauda » Thu Apr 13, 2017 3:57 am

Koz, thanks for the tips and your time. Following your steps, I did not get any high beeping sound. However, I feel the noise floor is still a little loud. I wonder if Noise Reduction is the answer, though I am weary of distortion so will probably need to tinker to get the right setting.

I do not know what Deyan Audio tech specifications are but submitted based on ACX check.

As for performance issues, I am getting more training to work on improving delivery.

Thanks very much.
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Re: High noise floor, hiss, high beep sound

Permanent link to this post Posted by kozikowski » Sun Apr 16, 2017 2:02 am

I do not know what Deyan Audio tech specifications are..

You could ask them......

ACX didn't directly tell us what to do. We read through their published technical specifications and through trial and error figured out the places they were foggy. For example, there are a number of different ways to measure noise.

We don't have certification from ACX. All we have is a series of presenters who got accepted for publication.

Koz
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