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I don't think so, Ron.  Real phase shift means along a timeline--out of
phase means not time-aligned.  Polarity reversal is at the same time.

Best,
John Haley


On Wed, May 6, 2015 at 3:35 PM, Ron Roscoe <[log in to unmask]> wrote:

> Oi!  Phase, polarity...........
> Polarity is just a special instance of phase shift; 180 degrees!
>
> Ron Roscoe
>
> -----Original Message-----
> From: Association for Recorded Sound Discussion List [mailto:
> [log in to unmask]] On Behalf Of Jamie Howarth
> Sent: Wednesday, May 06, 2015 3:32 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Playing Edison Diamond discs
>
> Correct, and I'm talking about phase because the two grooves are never
> perfectly perpendicular.
>
>
>
> Please pardon the misspellings and occassional insane word substitution
> I'm on an iPhone
>
> > On May 6, 2015, at 3:25 PM, DAVID BURNHAM <[log in to unmask]> wrote:
> >
> > Actually, Mickey, Pete is correct.  What you are describing is polarity
> reversal, as Michael Biel is usually only to happy to discuss.
> >
> > Dave
> > --------------------------------------------
> > On Wed, 5/6/15, Mickey Clark <[log in to unmask]> wrote:
> >
> > Subject: Re: [ARSCLIST] Playing Edison Diamond discs
> > To: [log in to unmask]
> > Date: Wednesday, May 6, 2015, 1:43 PM
> >
> > Pete-Phasing is inverting the
> > waveform - no delay temporally-Mickey
> > Follow me on Twitter
> > https://twitter.com/MickeyRClark
> > M.C.Productions Vintage Recordings
> >     710 Westminster Ave. West
> >
> >    Penticton BC
> >                 V2A
> > 1K8
> >             1-250-462-7881
> >     http://mcproductions.ca
> > ----- Original Message -----
> > From: "Pete Tinker" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Wednesday, May 06, 2015 8:51 AM
> > Subject: Re: [ARSCLIST] Playing Edison Diamond discs
> >
> >
> >> Please forgive this uneducated question.  Much of
> > the discussion on this
> >> topic has focused on the "phase" of different
> > transfers.  I'm not a
> >> signal processing guy, but to me "phase" involves the
> > frequency of the
> >> signal, so changing the phase is a temporal shift in
> > the signal (a
> >> lateral shift along the time axis) by a fraction of
> > some wavelength.  At
> >> times in this discussion, it seems that the intention
> > of changing the
> >> phase is a reversal of the amplitude of the digital
> > signal (mirroring it
> >> across the time axis), for which frequency is
> > irrelevant.
> >>
> >> If I have a stereo signal from a hill 'n' dale source,
> > it seems the
> >> preferred next step is to invert the phase of one
> > channel and then
> >> combine (add) the two channels prior to any digital
> > noise reduction.
> >> What is the meaning of "phase" in this context?
> >>
> >> --
> >> *Pete Tinker*
> >> West Hills, CA 91307
> >> 818-three/four/six-5213
> >> 818-six/nine/four-5213 /(cell)/
> >
> > ---
> > This email has been checked for viruses by Avast antivirus software.
> > http://www.avast.com
> >
>