Taperssection.com

Gear / Technical Help => Ask The Tapers => Topic started by: markbalogh on December 05, 2019, 04:44:18 PM

Title: Izotope program question
Post by: markbalogh on December 05, 2019, 04:44:18 PM
Can someone explain the "de-rustle" feature in Izotope. I occasionally record stealth with mics under my collar and if I move a bit too much I will get a "rustling sound". Will the "de-rustle" feature work on something like that and if so what would the technique be. Thanks.
Title: Re: Izotope program question
Post by: Scooter123 on December 05, 2019, 05:52:20 PM
Yes, it removes the noise or rustle generated by a lavalier microphone rubbing or brushing against a person's clothing during a recording.

https://www.izotope.com/en/products/rx/features/de-rustle.html (https://www.izotope.com/en/products/rx/features/de-rustle.html)

Title: Re: Izotope program question
Post by: sdc on December 09, 2019, 09:06:12 PM
It's really frustrating that both de-rustle and de-wind are both only in the (much) more expensive version of the program.  Me?  I'm saving my pennies. 
Title: Re: Izotope program question
Post by: Ben Turnbull on December 09, 2019, 11:20:51 PM
I had a brief period of use of the full version and tried both of those tools. They didn't seem to be all that much more discrete in the handling of the "named" faults than selective spectral polishing of the very low rumbles that associate (normally) with the noise described. I left commentary to iZotope that for us, the standard tool kit should include the de-wind module at least. Or, alternately, perhaps put together a Taper's/Field Recording application or set of VSTs more tailored to the afflictions we face as part of our environments.

I don't record vocalists so Breath Control... out. De-Bleed, nope. Interpolate? don't know, and WTF is Mouth De-click?

I'd have only:
De-Click to knock down the close Ass Clappers.
De-Clip occasionally
De-Reverb... the jury is still out on that, but OK
Music Rebalance... use gently
Spectral De-Noise and Repair. Worth the price of the whole app

The Utility kit can pretty much be handled in Audition or any other DAW, so out they go.

The Measurement tools don't offer much, although the Find Similar can be handy if the right fault is unique enough to isolate en-mass.
Title: Re: Izotope program question
Post by: markbalogh on December 10, 2019, 08:03:05 AM
Thanks for the comments so far.

Another follow up question for all... Do you run the program to scrub the entire file, like you would do w/ the vinyl click/pop remover or is it for "spot" cleaning only? Thanks.
Title: Re: Izotope program question
Post by: Gordon on December 10, 2019, 08:06:44 AM
Thanks for the comments so far.

Another follow up question for all... Do you run the program to scrub the entire file, like you would do w/ the vinyl click/pop remover or is it for "spot" cleaning only? Thanks.

I've found with the correct settings I can run de-click on the whole file without issue.  Spectral Repair can only be done on individual spots.  It's time consuming but the results are worth it.
Title: Re: Izotope program question
Post by: rocksuitcase on December 10, 2019, 10:08:29 AM
bump to be in thread, I am considering purchasing izotope SOON for cassette transfers; and might I add Ben Turnbull has been helpful to me in realizing this is the product for me. which module, as is, would be recommended for analog to digi transfers?
Title: Re: Izotope program question
Post by: Ben Turnbull on December 11, 2019, 11:09:58 PM
RX would help in tape to 1/0 transfers if you want to try to knock down some of the noise generated by the tape. Tap hiss is generally a consistent noise pattern that should be easy enough to sample and get a nice pattern for.

The problem is with hiss, it tends to want to occupy some of the same frequencies as your musical high notes, however generated. I've not specifically addressed a tape transfer so I'm going from some very old memory of it's character... I'd expect what ever noise pattern that is present to be attributed to mechanically generated sources and should be fairly low dB level. So you need to listen to the results of the treatment against the original. If too much music is altered on the down side, reshape your controls and listen again.  For this reason, I rarely apply Spectral De-Noise to an entire file. I'll select the low energy and quieter sections for treatment since other noise makers will be quite able to mask it in playback. It takes some work to come out with a good balance but the results can be positive.

I use the above treatment when trying to tame a noisy HVAC vent or fan.

Good Luck.
Title: Re: Izotope program question
Post by: EmRR on December 12, 2019, 09:49:00 AM
bump to be in thread, I am considering purchasing izotope SOON for cassette transfers; and might I add Ben Turnbull has been helpful to me in realizing this is the product for me. which module, as is, would be recommended for analog to digi transfers?

You can apply a pretty good amount of de-noise to tape.  Use it within RX7 instead of as a plug in, and select the highest quality render (D?).  Do it in multiple passes if needed, I'll typically do an overall light pass, then possibly a second pass for specific noisy regions, which could be spots in time or an overall frequency range. 

Related but different from music work, I have used de-noise with spoken word content in a room with an air conditioner running full blast, reduced it to a low hiss with two passes of roughly -12 for different aspects of the noise.  Room sounds silent.  Previously the AC was extremely distracting and masked some low level speech.   The voices sound somewhat different, there is a penalty, but they don't have obvious artifacts.  A person not familiar with the raw audio would not think it sounded off. 
Title: Re: Izotope program question
Post by: Ben Turnbull on December 14, 2019, 01:10:26 PM
^ Good to know, I'll revisit. Thanks.