[PD] mastering to vinyl live w/ pd

Sun Dec 23 01:59:47 CET 2012

On Sun, Dec 23, 2012 at 1:49 AM, Ed Kelly <morph_2016 at yahoo.co.uk> wrote:

> Hey Mark,
>
> RIAA - the original RIAA curve is the one, forget the variants, especially
> the IEC variety.
> It's a high-frequency pre-emphasis filter that overcomes the inherent
> surface noise of vinyl by boosting the HF, and reducing the. bass so that
> the needle doesn't jump out of the groove.
>

But doesn't this greatly matter on where on the vinyl you are? As the more
inner track takes a much more narrow curve, different frequencies in the
surface noise arrise. At least that's how I understand it and why mastering
for vinyl is quite a different trade as it is for other media.

drmr

> Also, the curve you most commonly see is the reproduction (de-emphasis)
> curve (the one which slopes downwards) - this is irrelevant, since anything
> you play the vinyl back on will have this frequency response built-in. The
> recording curve is the one which matters -  I think it should not be too
> hard to implement the original equation in C, or even using exp~ or fexp~ -
> just to send it to the lathe.
>
> The problem is that the mechanical nature of vinyl means that, a standard
> 6dB/octave single-pole highpass filter won't work, because the
> amplification needed to restore the bass would be too great. It's a sort of
> "kinked" highpass filter. See this article:
> http://www.stereophile.com/features/cut_and_thrust_riaa_lp_equalization
>
> Also, the mix must be mono compatible. This mostly means keeping bass
> frequencies in-phase and trying to make everything below about 220Hz mono.
>
> Metastudio 4. I call that a "lost" metastudio, because I variously did and
> didn't distribute (leak) it on a personal basis (I was slack/busy, I had
> kids, you know...)
>
> Metastudio 5 on the other hand, is currently being worked on. New
> synthesis units based on analogue wavefolding techniques, the tracker
> sequencer with cut and paste, and the quadtracker - a monster 4-channel
> tracker style sequencer. I need to write a whole load of help files this
> time also, and some more explicative performance patches...early 2013
>
> Cheers,
> Ed
>
> Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
> http://sharktracks.co.uk/
>
>   ------------------------------
> *From:* me.grimm <megrimm at gmail.com>
> *To:* Ed Kelly <morph_2016 at yahoo.co.uk>
> *Cc:* "pd-list at iem.at" <pd-list at iem.at>
> *Sent:* Friday, 21 December 2012, 14:40
>
> *Subject:* Re: [PD] mastering to vinyl live w/ pd
>
> hey all thanks for the tips!
>
> nicolas: your phasemeter looks great. i will use that.
>
> but what is a riaa filter then? is there an implementation in pd? from eds
> link it looks like there is two such curves. one original RIAA curve and
> the other as RIAA/IEC curve.
>
> btw nicolas your website looks super great and slick. im curious on the
> topography record you made. any for sale? sound samples?
>
> ed: thanks for reminding me of your metastudio project. i just revisited
> and remembered all the nice stuff you had going on. were not you promoting
> a version 4 at one point? what happened to that?
>
> hopefully ill get something cutting over break before the next semester
> starts!
>
> m
>
> On Thu, Dec 20, 2012 at 6:57 AM, Ed Kelly <morph_2016 at yahoo.co.uk> wrote:
>
> These are some abstractions I have made that do some of what you are
> asking...the compressor~ is vanilla.
> Mastering is primarily about developing "golden ears" but you also need to
> take into account the RIAA curve: http://www.tanker.se/lidstrom/riaa.htm
>
> Remember it's mechanical - I understand that once the RIAA is taken into
> account, the most pressing issue is bass - extreme bass and the needle
> jumps, too much and the track is too wide so you get less time. If it's set
> up wrong then tracks will overlap (but there could be some interesting
> "jumping record" experiments in there.
>
> Best,
> Ed
>
> Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!
> http://sharktracks.co.uk/
>
>
>
> ----- Original Message -----
> > From: Lorenzo Sutton <lorenzofsutton at gmail.com>
> > To: pd-list at iem.at
> > Cc:
> > Sent: Wednesday, 19 December 2012, 21:23
> > Subject: Re: [PD] mastering to vinyl live w/ pd
> >
> >
> >
> > On 19/12/12 03:10, me.grimm wrote:
> >>  does anyone know much about mastering? i dont.....
> >>
> >>  anyway i have this record recorder/cutter/lathe and was thinking of
> >>  doing something like this:
> >>
> >>  http://www.youtube.com/watch?v=TDnpXVUKXM0
> >
> > Very interesting--- thanks for sharing, I couldn't resist noting (and
> > continuously concentrating) on the ground loop (maybe empathised by the
> > woofer..) I'm not totally sure that was intended though ..
> >>
> >>  which is funny because i have a similar recorder. although i was
> >>  thinking just cutting in real-time straight from PD. but to get the
> best
> >>  sound maybe i could run it through some kind of "mastering"
> > patch. has
> >>  anyone made such a thing or know best to do in terms of getting decent
> >>  masters right from PD? I would think something like:
> >
> > Emulating it as well? I know you lose all the materic thing, but it
> > could be fun.
> >
> > The voice as heard in the video has something fascinating, it would be
> > interesting to find out what modern digital audio compressions (data
> > such as mp3, ogg etc. can create similar suggetions...)
> >
> > Lorenzo.
> >>
> >>  [equilizer~] - but what one? [adaptive/nlms3~]? adaptive_equilization
> >>  example which im not sure i would know how to use for this
> >>  |
> >>  [unauthorized/compressor~] - although there is prob a good vanilla one
> no?
> >>  |
> >>  [expander~] ???
> >>  |
> >>  [exciter~]
> >>  |
> >>  [zexy/limiter~]
> >>  |
> >>  [hip~ 40]
> >>  |
> >>  [lop~ 16000]
> >>  |
> >>  [dac~]
> >>
> >>
> >>  but i might just make a mess with this....
> >>
> >>  m
> >>
> >>
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> >
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>
> --
> ____________________
> m.e.grimm | m.f.a | ed.m.
> megrimm at gmail.com
> _________________________________
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