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Gear / Technical Help => Post-Processing, Computer / Streaming / Internet Devices & Related Activity => Topic started by: Belexes on July 30, 2010, 08:28:41 AM

Title: Izotope RX Advanced
Post by: Belexes on July 30, 2010, 08:28:41 AM
I have obtained this software for audio editing. Is this the gold standard in terms of dither/resample? Something about it's algorithm? Have been using Cool Edit Pro and Audacity.
Title: Re: Izotope RX Advanced
Post by: kirk97132 on July 30, 2010, 06:54:00 PM
Check out the comparisons of sample rate converters here:
http://src.infinitewave.ca/
Nothing comes out better than the Izotope. 
Title: Re: Izotope RX Advanced
Post by: DigiGal on July 30, 2010, 07:09:03 PM
Wave Editor a Mac only program designed in Cocoa incorporates iZotope's 64-bit SRC™ and MBIT+™ dither and also incorporats iZotope's SonicFit™ time/pitch technology.

http://www.audiofile-engineering.com/waveeditor/
Title: Re: Izotope RX Advanced
Post by: Chuck on July 30, 2010, 07:31:11 PM
I use RX v1.3 at work to remove tones and line noise from tele-conference recordings.
It's noise reduction feature works great for our needs. Just this week I used it to remove a constant "beep" tone  (every 2 - 3 seconds) from a very important conference call. It did leave behind a slight artifact noise, but the "beep" tone, was totally removed and made the client (and my boss) very happy.
Title: Re: Izotope RX Advanced
Post by: Belexes on July 31, 2010, 10:14:43 AM
Check out the comparisons of sample rate converters here:
http://src.infinitewave.ca/
Nothing comes out better than the Izotope.

Excellent. Thanks.
Title: Re: Izotope RX Advanced
Post by: taperj on July 31, 2010, 06:46:47 PM
iZotope RX is definitely a nice little suite, the spectral repair and declicker have come to be standards in my tool belt for removing things like thuds from beachballs. I'll have to start using it for dither/resample now as well!  ;D

J
Title: Re: Izotope RX Advanced
Post by: page on July 31, 2010, 09:14:29 PM
iZotope RX is definitely a nice little suite, the spectral repair and declicker have come to be standards in my tool belt for removing things like thuds from beachballs. I'll have to start using it for dither/resample now as well!  ;D

J

I found testing their dither routines (or routines in general) particularly revealing when you dither to 8bit and listen to the noise.
Title: Re: Izotope RX Advanced
Post by: weedwacker on August 01, 2010, 01:50:41 PM
The three best resamplers I've used are the following in order from best to least
1. Izotope RX Advanced
2. SoX
3. Adobe Auditon 3.0

Izotope's resampler hands down gives the warmest fullest sound after resampling using the highest quality settings. SoX is pretty close also using the rate -v -s switches. AA3 with pre/post set at 999 is pretty good also. Everything else doesn't even come close in sound quality after resampling.

As stated by DigiGal you can find the Izotope src resampler in a much cheaper option as a plugin for wave editor on mac's. SoX is hands down the best freeware audio resampling program out there but you have to work in a with the command line to use it.
Title: Re: Izotope RX Advanced
Post by: JasonSobel on August 01, 2010, 07:11:11 PM
The three best resamplers I've used are the following in order from best to least
1. Izotope RX Advanced
2. SoX
3. Adobe Auditon 3.0

Izotope's resampler hands down gives the warmest fullest sound after resampling using the highest quality settings. SoX is pretty close also using the rate -v -s switches. AA3 with pre/post set at 999 is pretty good also. Everything else doesn't even come close in sound quality after resampling.

As stated by DigiGal you can find the Izotope src resampler in a much cheaper option as a plugin for wave editor on mac's. SoX is hands down the best freeware audio resampling program out there but you have to work in a with the command line to use it.

have you tried r8brain or r8brain PRO?  I think I'd put the free version of r8brain up there was SoX among the best freeware audio resampling programs.  and I'd put r8Brain PRO right up there with Izotope.  It's certainly worth looking into if you haven't yet tried it...
Title: Re: Izotope RX Advanced
Post by: kirk97132 on August 01, 2010, 07:49:28 PM
^^^ R8brain same as Izotope:
http://src.infinitewave.ca/
Title: Re: Izotope RX Advanced
Post by: weedwacker on August 01, 2010, 08:47:41 PM
Music should be judged by your ears not your eyes.
Title: Re: Izotope RX Advanced
Post by: weedwacker on August 01, 2010, 08:53:01 PM
The three best resamplers I've used are the following in order from best to least
1. Izotope RX Advanced
2. SoX
3. Adobe Auditon 3.0

Izotope's resampler hands down gives the warmest fullest sound after resampling using the highest quality settings. SoX is pretty close also using the rate -v -s switches. AA3 with pre/post set at 999 is pretty good also. Everything else doesn't even come close in sound quality after resampling.

As stated by DigiGal you can find the Izotope src resampler in a much cheaper option as a plugin for wave editor on mac's. SoX is hands down the best freeware audio resampling program out there but you have to work in a with the command line to use it.

have you tried r8brain or r8brain PRO?  I think I'd put the free version of r8brain up there was SoX among the best freeware audio resampling programs.  and I'd put r8Brain PRO right up there with Izotope.  It's certainly worth looking into if you haven't yet tried it...

I haven't tried R8brain PRO but have used the freeware version of R8brain and it is no comparison to SoX when it comes to analog recorded audio transferred at higher samplerates and bitdepths that is then resampled back down to redbook cd quality 16 bit 44100 kHz wav files. Digitally recorded music there probably won't be as much if any of a difference in the end result. The better the dynamic range and nuanced details of a recording the more apparent the limitations are in how and what you use to resample the audio.
Title: Re: Izotope RX Advanced
Post by: weedwacker on August 01, 2010, 09:58:28 PM
Here is a little listening test to see how good people's ears are.
I am upping two samples both recorded at 24 bit / 96000 kHz
Each sample has been downsampled to 16 bit / 44100 kHz using Izotope RX Advanced, Adobe Audtion 3, SoX and R8brain free using the highest quality settings for each. I've also included the sample in it's original format at 24 bit / 96000 kHz.

Sample 1
recorded digitally @ 24 bit / 96000 kHz
http://www.sendspace.com/file/brn821

Sample 2
transferred analog(cassette) to digital @ 24 bit / 96000 kHz
http://www.sendspace.com/file/xee9m0

Title: Re: Izotope RX Advanced
Post by: kirk97132 on August 02, 2010, 02:31:38 PM
Music should be judged by your ears not your eyes.

Funny how the program that everyone thinks sounds the best has the best specs. 
Title: Re: Izotope RX Advanced
Post by: jbw on August 09, 2010, 12:43:59 AM
What setting is everyone using in RX for downsampling? I do not have RX in front of me right now, but I just got it recently and noticed that there were quite a few options whilst downsampling. IIRC the manual does not delve much into the options for resampling., that is if IRC.
Title: Re: Izotope RX Advanced
Post by: 108Ω on August 10, 2010, 07:15:10 PM
Best there is at the moment
Mbit+ and iZotope dither also in SF10pro

R8brain pro is spendy and flakey at $130....
Doesn't know bwff...