on 10/3/00 12:31 PM, Brooks Weisman at brooksw@jps.net wrote: > David > If the SAT was used to tune a normal FAC tuning it would not "get 100%" on > the PTG tuning test given to aural tuners (the Master Tuning determined by > the 3 RPTs). The treble would be too sharp and the bass would be too flat. > > Brooks Weisman RPT > Arcata & Napa, CA Special instructions are given for the tuning of the high treble for the PTG RPT tuning exam. The exam calls for "clean single octaves" in the high treble. These instructions are given because standard practice in the profession includes some rather divergent tunings for the top octave. The FAC tunings that the SAT calculates, for the most part, tune double-octaves throughout the scale. Tuning double-octaves in the high treble results in a sharper high treble than does tuning clean single octaves. For an explanation of this, see my Journal article Temperament to the Top -- Temperament to the Bottom, July 1994. FAC tunings will not receive perfect scores in the high treble on the PTG RPT tuning exam because of these special instructions given to the examinee and examiners alike. However, there is no comparable situation in the bass, and FAC tunings are likely to score perfectly in the bass. I have personally scored a tuning exam in which Dr. Sanderson "took" the exam using a straight FAC tuning. The bass score was perfect; the high treble lost a few points. Kent Swafford
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