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ARSCLIST  September 2020

ARSCLIST September 2020

Subject:

Re: Izotope RX8; recordings of FM broadcasts with multipath distortion

From:

Karl Miller <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Tue, 15 Sep 2020 18:16:34 +0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (124 lines)

 Thanks so much for the responses. I guess I can save myself some money. 
Karl
    On Monday, September 14, 2020, 11:33:52 AM CDT, Richard L. Hess <[log in to unmask]> wrote:  
 
 Hi, Karl,

You are correct that it works based on using the music itself as a 
reference. It has complex algorithms that attempt to minimize the 
reduction of vibrato as it stands. I'd love to have a relatively short 
segment or three of music to try it on.

The challenge for me is much of the worst wow and flutter I come across 
is on spoken word recordings and neither RX8 or Capstan can function 
well with those as I understand it. Neither of those programs do what 
Plangent can do.

Cheers,

Richard


On 2020-09-14 12:05 p.m., Karl Miller wrote:
>  Related to RX 8...are there any opinions of the new feature to deal with pitch fluctuations and how it might be relative to capstan? I am concerned about music passages with vibrato.
> Karl
>      On Sunday, September 13, 2020, 08:12:13 PM CDT, Tim Gillett <[log in to unmask]> wrote:
>  
>  Hi Charles, Have you tried the suggestions around summing to mono? It
> can work quite well, with few or no artifacts.
> 
> Tim.
> 
> ----- Original Message -----
> From: "Association for Recorded Sound Discussion List"
> <[log in to unmask]>
> To:<[log in to unmask]>
> Cc:
> Sent:Sun, 13 Sep 2020 17:25:30 -0700
> Subject:Re: [ARSCLIST] Izotope RX8; recordings of FM broadcasts with
> multipath distortion
> 
>  Richard and Lou,
> 
>  Thank you very much for the ideas.  You've given me back some hope
> for
>  these tapes. I was using RX7 spectral de-noise, but it was leaving
> too
>  much residual noise, and I couldn't push it further without losing
>  content and creating artifacts.  It seems I need to be a bit more
>  adventuresome in my experimentation.
> 
>  I have RX7 advanced, so the upgrade cost to 8 advanced is not too
> terrible
> 
>  Will let you know if I am successful using what you have suggested.
> 
>  chuck
> 
>  find some non-destructive ways of
> 
>  On 9/13/2020 1:48 PM, Richard L. Hess wrote:
>  > Hi, Lou,
>  >
>  > That is a good suggestion, but we already have an M-S thing going
> on
>  > as I explained in a previous email. All the noise is in the L-R
>  > channel which, unfortunately was mixed back into the quiet L+R
> channel
>  > when the stereo was demodulated in the tuner to make the tape
>  > recording. So, the act of summing L + R from the tape will act to
>  > cancel out the noise, but the balance between L + R will need to be
> 
>  > tuned for minimum noise, as you know when you're trying to null
>  > things, 1-2 dB in level makes a big difference.
>  >
>  > I haven't thought what subsequent M-S processing might do, but that
> 
>  > would put it back into L+R and L-R and might be another way of
> looking
>  > at the same thing...just attenuating the S channel would work the
> same
>  > as summing, but the match is critical in either case.
>  >
>  > Cheers,
>  >
>  > Richard
>  >
>  >
>  >
>  > On 2020-09-13 4:35 p.m., Lou Judson wrote:
>  >> I wonder if an MS treament would help with multipath - EQ the side
> 
>  >> signal to reduce noise, bost the mid to compensate, then
> recombine. I
>  >> don;t have a sample to try this on but it has worked for me for
>  >> stereo noise in the past.
>  >>
>  >> <L>
>  >> Lou Judson
>  >> Intuitive Audio
>  >> 415-883-2689
>  >>
>  >>> On Sep 13, 2020, at 1:16 PM, Lou Judson <[log in to unmask]>
> wrote:
>  >>>
>  >>> FM multipath? Good question. Have you tried it in mono? Mono-ing
> the
>  >>> receiver cleans it right up, but I don’t now about after it is
>  >>> recorded.
>  >
>  --
>  Charles Reinsch
>  KRAB Archive: www.krabarchive.com
> 
> -------------------------
> Email sent using Optus Webmail
> 

-- 
Richard L. Hess                  email: [log in to unmask]
Aurora, Ontario, Canada                            647 479 2800
http://www.richardhess.com/tape/contact.htm
Track Format - Speed - Equalization - Azimuth - Noise Reduction
Quality tape transfers -- even from hard-to-play tapes.  

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