Accu-Tweaker anomoly

[Newton Hunt]

Hi, Jim,
      Microphone does not have a dead spot, I have checked with a sweep
generator.  Microphone is someone's $3.00 high quality product.
      By using an external microphone you determine that the circuts are not
to blame.
      Since the SAT 'hears' only a small portion of the wave form and since
the 2nd partial on those three notes, A-B, is weak just most the SAT around
until you find a spot where it will pick up the note.
      Two locations work well for me;
            1.  Sitting on plate at bass/middle break
            2.  One stretcher, mid point, SAT at 90 degrees to stretcher.
      If the piano, and some do, produces a strong 2nd partial then it works
well.
            Newton
            nhunt@rci.rutgers.edu