Dec 10, 2017 iZotope RX6活用法-08 De Rustle このビデオシリーズは、RX6の新機能をわかりやすく説明し、サンプルを用いて学習ができるクリップです。. De-rustle ADV Overview. De-rustle reduces the noise or rustle generated by a lavalier microphone rubbing or brushing against a person’s clothing during a recording. Lav rustle can vary unpredictably over time and exhibit a wide variety of sonic characteristics from high frequency “brushing” to low frequency “thuds.”. Spectral De-noise Adaptive mode Performance Note. The Adaptive mode in Spectral De-noise uses a significant amount of memory and computational power. For a more efficient form of adaptive noise reduction, try the Adaptive mode in Voice De-noise, which is designed to be highly efficient and zero-latency.
The De-rustle module in iZotope RX 6 Advanced removes the noise or rustle generated by a lavalier microphone rubbing or brushing against a person's clothing during a recording. Lav rustle can vary unpredictably over time and exhibit a wide variety of sonic characteristics from high frequency 'crackling' to low frequency 'thuds.'
Brand new to RX 6 is the De-Rustle module, which reduces rustling noises caused by lavalier microphones coming into contact with clothing. We collected lots of isolated rustle, which we then used to corrupt clean speech and feed to a machine learning algorithm trained to recover the clean speech.When processing, the trained machine learning algorithm separates the clean speech from the background rustle, meaning we can go from this…
[voice over with rustling]
To this.
[voice over, processed]
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For more information, and to download your own test files to use with RX 6, head to izotope.com/RX.
In this video, I’m going to cover how to use the brand new De-Rustle module in RX 6 in a post-production context, using a sample that features dialogue.Once you’ve downloaded the test file called, “Post Production_De-Rustle” for this tutorial from the RX web page, and opened it in RX 6 by clicking and dragging it into the RX application window, or by opening RX and pressing Command+O or Control+O on a PC to locate and open the sample.
Your RX window should look like mine, with the file “Post Production_De-Rustle” in a tab on the top-left hand side of the screen.
De-Rustle reduces the noise, or rustle, generated by a lavalier microphone rubbing or brushing against a person’s clothing during recording. Lav rustle can vary unpredictably over time, and exhibit a wide variety of sonic characteristics from high frequency brushing to low frequency thuds.
Let’s have a listen to this sample which has very noticeable rustle noises coming from a lavalier microphone that’s come into contact with a person’s clothes.
![Izotope rx 5 de- rustle lyrics Izotope rx 5 de- rustle lyrics](/uploads/1/2/5/6/125675105/968751181.png)
I’ll press return to bring the playback head to the beginning of the sample, and space bar to play the sample.
[voice sample]
Let’s use the new De-Rustle module to reduce the presence of those distracting rustle noises.
I’ll find that on the right, click it, and you’ll notice a few parameters. The first is reduction strength. If I move this slider to a higher value, like eight or nine, the processing more strictly defines what it classifies as dialogue, which can result in more rustle reduction at the cost of reducing speech clarity.
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For smaller values, the processing more broadly defines what it classifies as dialogue, which potentially allows more rustle, but reduces the possibility of speech clarity loss as a result of the processing.
I’m going to push this all the way to 10, because this sample features a lot of rustle noises. I should add that de-rustle will still process, even when the reduction strength is set to zero.
The next parameter is ambience preservation. Sometimes, the speech separation algorithm will remove background ambience in addition to rustle, which may be undesirable. To remove the rustle but retain the noise floor or background ambience, the noise floor amount slider should be set to a non-zero value.
Higher values will retain more of the noise floor.
In the case of this example, I’m not hearing much of a noise floor to preserve. It’s a very cleanly recorded example. However, there are some pretty aggressive rustle noises, so I’m just going to slide this all the way down to zero, and once I’m happy with my parameters, I’ll press process.
Let’s have a listen back. So here’s after we used De-Rustle.
[voice sample, after processing]
You might have noticed that some rustle noises continue to poke through, distracting us from the dialogue. What I’ll do is run another pass at my settings to double down on the amount of de-rustling taking press. Running multiple passes of any module in RX 6 is standard practice if you’re dealing with especially noisy samples, and in this case, we’ve got one with a lot of rustle on it.
So let’s do another pass. I’ll hit process again. Let’s have another listen back.
So here is after we ran another pass of de-rustle.
[voice sample, after double processing]
And for reference, here’s before we did any processing with the De-Rustle module.
[voice sample, before processing]
And once more, here’s after we did two passes of De-Rustle.
[voice sample, after double processing]
![Izotope Rx 5 De- Rustle Izotope Rx 5 De- Rustle](/uploads/1/2/5/6/125675105/176023772.jpg)
Izotope Rx 5 De- Rustle 2
The results are pretty dramatic.
Izotope Rx 5 De- Rustler
For more information, and to download your own samples to use with RX 6, head to izotope.com/RX.