[CAUT] P-12ths was: Tuning a Steinway DandaBosendorferImperialtogether

[Ed Sutton]

Kent-

This might provide some information:

1) Find a piano with wound strings on the long bridge.

2) Aurally retune the lowest plainwire note to the same pitch as the highest wound string. Now you have very high and very low inharmonicity notes at the same pitch.

3) See what the machine does with these notes. Does it calculate different pitches for them? Do they match at a particular partial?  What's happenning at the third partial? Cybertuner Pianalyzer would give quick comparisons and show any partial matching.

4) Similarly, when you tune the SD and BI together, take sample readings with the Cybertuner Pianalyzer and see what offsets you get at various partials.

Ed
  ----- Original Message ----- 
  From: Kent Swafford 
  To: College and University Technicians 
  Sent: Friday, October 17, 2008 10:04 PM
  Subject: Re: [CAUT] P-12ths was: Tuning a Steinway DandaBosendorferImperialtogether


  As far as I know, Ed is correct.


  Kent




  On Oct 17, 2008, at 7:12 PM, Ed Sutton wrote:


    If I understand correctly it has no memory. It doesn't build up nformation as it goes, or store samples to calculate a curve in advance of itself.
    It just listens to a note and somehow proposes an offset for that note, then "good-by." Go to any other note and it will do the same. Jump around from piano to piano, and it will continue to tune one note at a time.
    [I may be corrected on this.]

    ES
      ----- Original Message -----
      From: Porritt, David
      To: Ed Sutton ; College and University Technicians
      Sent: Friday, October 17, 2008 7:48 PM
      Subject: RE: [CAUT] P-12ths was: Tuning a Steinway D andaBosendorferImperialtogether


      I wonder if it measures as it goes does it violate some patents held by other manufacturers?

      dp


      David M. Porritt, RPT
      dporritt at smu.edu

      From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Ed Sutton
      Sent: Friday, October 17, 2008 6:23 PM
      To: College and University Technicians
      Subject: Re: [CAUT] P-12ths was: Tuning a Steinway D andaBosendorferImperialtogether

      It seems that the device does not calculate curves, since the tuning of each note seems to be a discrete decision.

      Is it possible that it measures the inharmonicity of the note, or perhaps several partials, and based upon this makes a decision (perhaps using a collection of of previously established templates), on the place to tune the note?

      Perhaps it has a set of ideal curves for various partials, and an algorithm to calculate a "best fit" compromise, one note at a time?

      Ed Sutton
        ----- Original Message -----
        From: Marcel Carey
        To: College and University Technicians
        Sent: Friday, October 17, 2008 6:47 PM
        Subject: Re: [CAUT] P-12ths was: Tuning a Steinway D andaBosendorferImperial together

        Well Don, I had read that page, but I was wondering about the actual working of the program. I wrote privatly to Kent to ask what were the features or the actual handling of the machine. It seems (if I understood correctly) that there is no pitch adjustment or pitch raise function, no measurements taken, not to mention file savings. My big question is does the program measure and calculate a perfect tuning for each piano or is it just like 1 tuning file in a box. This tuning file being so perfect that it would fit all pianos...
        This is my question. Before I invest over a thousand dollars in something like this, I would like to see screen shots of the differents features I'm used to with other tuning programs TL, Veritune and CyberTuner.
        Thanks,
        Marcel




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        > Hi Marcel,
        > 
        > Do you mean this page?
        > 
        > http://www.piano-stopper.de/html/stopper_tuning1.html
        > 
        > At 04:50 AM 10/17/2008 -0400, you wrote:
        > > Hi Kent,&S and Bosendorfer sounded so good together.I'm not too sure.
        > >Wish Bernhard would tell us more about his program and add some tweeking
        > >functions in it.Marcel Carey
        > >

        > 
        > mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/
        > 
        > 3004 Grant Rd. REGINA, SK, S4S 5G7
        > 306-539-0716 or 1-888-29t-uner
        >

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