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Author Topic: vocal isolation  (Read 373 times)

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Offline nulldogmas

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vocal isolation
« on: October 25, 2021, 12:17:46 AM »
Has anyone here experimented with filters to isolate and remix vocal levels? I just played around with a couple of online karaoke-izer type things, and they're just close enough to being usable to make me wonder if there's a more professional option that might do a better job.

Offline rocksuitcase

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Re: vocal isolation
« Reply #1 on: October 25, 2021, 10:47:49 AM »
Supposedly Izotope RX8 or 9 has a module which does this. It is not one of the cheaper modules though. I do not own, but a friend of mine has done some vocal isolation by taking vocals from a soundboard and dropping them onto an AUD trying to repair songs.

https://www.izotope.com/en/products/rx.html

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Offline nulldogmas

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Re: vocal isolation
« Reply #2 on: October 25, 2021, 12:01:14 PM »
Supposedly Izotope RX8 or 9 has a module which does this. It is not one of the cheaper modules though.


Yeah, I was afraid that was going to be the answer. I guess I'll grab a demo version of RX and see if it works for this one recording, and if it does, start begging registered RX owners for help.

Offline DavidPuddy

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Re: vocal isolation
« Reply #3 on: October 25, 2021, 12:46:58 PM »
If you upload a file I will see what I can do with it. I'm using rx8.

Also, if you buy the rx elements (I think it's $29 now) they have regular upgrade specials for the full program. I think I paid $99 for the upgrade 1 or 2 years ago
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Offline nulldogmas

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Re: vocal isolation
« Reply #4 on: October 25, 2021, 01:19:31 PM »
If you upload a file I will see what I can do with it. I'm using rx8.

Also, if you buy the rx elements (I think it's $29 now) they have regular upgrade specials for the full program. I think I paid $99 for the upgrade 1 or 2 years ago

Good to know, thanks! And PMing you...

Offline Gutbucket

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Re: vocal isolation
« Reply #5 on: October 25, 2021, 05:19:49 PM »
Not exactly what you are asking for but you can always try a touch of EQ emphasis around ~3kHz, center of the vocal consonant region critical to speech intelligibility.  That's also the "presence" region where some emphasis can decrease the apparent distance to the source, making a recording sound a bit clearer and closer than it originally was.  Tread lightly there though, too much will quickly become grating and fatiguing.  Some mics seem cleaner in that region than others making the recording capable of accepting more emphasis before things get harsh, and it really depends on what else is happening in that frequency range in addition to the vocals. A dynamic EQ, or band-limited compression set carefully can help in pushing a bit more emphasis into that region without getting it sounding overly bright and harshly penetrating. 

Yeah, application of EQ is invitation to the dark side (even if emphasizing the brighter side of things) and something of a pandora's box, but if open to going there, a little attention to this region can help significantly.  Its not capable of re-balancing things in a dramatic way, but can sometimes make the difference between acceptable and not.
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Offline nulldogmas

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Re: vocal isolation
« Reply #6 on: October 25, 2021, 11:48:45 PM »
Not exactly what you are asking for but you can always try a touch of EQ emphasis around ~3kHz, center of the vocal consonant region critical to speech intelligibility. 

Oh, I tried, believe you me. Unfortunately the instruments are so clear that it ended up feeling like you were sitting inside a snare drum.

DavidPuddy just kindly ran a couple of tests of Izotope, and a 10 dB vocal boost turns out to be not too bad — it definitely raises the vocals significantly, without being artifacty, though it seems to lose some high- and low-end definition for some reason. I'm going to experiment some with mixing back in some of the original source, or even just the high and low end from the original source, to see what that does; once I've returned from that rabbit hole I'll post some samples.

Offline nulldogmas

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Re: vocal isolation
« Reply #7 on: October 26, 2021, 08:47:25 AM »
Okay, here's what I've come up with:

Original recording (raw):
https://www.dropbox.com/s/k3mve0wd6vc9jvg/over-the-cliff-raw.flac?dl=0

Original recording (EQ applied):
https://www.dropbox.com/s/dqq7am6aktx5iw0/over-the-cliff-EQd.flac?dl=0

Izotope filter applied by David (10 dB vocal boost, plus some light EQ afterwards):
https://www.dropbox.com/s/nkhl0t49a23ym0q/over-the-cliff-10dB-boost.flac?dl=0

Mix of Izotope version with EQd original source (version 1):
https://www.dropbox.com/s/he5zkfegnpe0suo/over-the-cliff-2source-mix-alt1.flac?dl=0

Mix of Izotope version with EQd original source (version 2):
https://www.dropbox.com/s/4vobqhrbn1lhx33/over-the-cliff-2source-mix-alt2.flac?dl=0

The differences are subtle, certainly, but I definitely feel like the trip through Izotope has taken it from "annoyingly low vocals" to "low vocals, but not egregiously so." What do all y'all think?

Offline DavidPuddy

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Re: vocal isolation
« Reply #8 on: October 26, 2021, 09:35:48 AM »
Okay, here's what I've come up with:

Original recording (raw):
https://www.dropbox.com/s/k3mve0wd6vc9jvg/over-the-cliff-raw.flac?dl=0

Original recording (EQ applied):
https://www.dropbox.com/s/dqq7am6aktx5iw0/over-the-cliff-EQd.flac?dl=0

Izotope filter applied by David (10 dB vocal boost, plus some light EQ afterwards):
https://www.dropbox.com/s/nkhl0t49a23ym0q/over-the-cliff-10dB-boost.flac?dl=0

Mix of Izotope version with EQd original source (version 1):
https://www.dropbox.com/s/he5zkfegnpe0suo/over-the-cliff-2source-mix-alt1.flac?dl=0

Mix of Izotope version with EQd original source (version 2):
https://www.dropbox.com/s/4vobqhrbn1lhx33/over-the-cliff-2source-mix-alt2.flac?dl=0

The differences are subtle, certainly, but I definitely feel like the trip through Izotope has taken it from "annoyingly low vocals" to "low vocals, but not egregiously so." What do all y'all think?

I agree with your last point. Version 2 sounds good to me.
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Offline Gutbucket

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Re: vocal isolation
« Reply #9 on: October 26, 2021, 10:26:39 AM »
I'll try an give a listen tonight when I get home.
musical volition > vibrations > voltages > numeric values > voltages > vibrations> virtual teleportation time-machine experience
Better recording made easy - >>Improved PAS table<< | Made excellent- >>click here to download the Oddball Microphone Technique illustrated PDF booklet<< (note: This is a 1st draft, now several years old and in need of revision!  Stay tuned)

 

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