Unison Width - was stability issue

[Roger Jolly]

>     The softer the hammer, the less pronounced the higher partials...so,
>tuning irregularties show up less in a unison with a softer hammer. There is
>a 'wider' acceptance of what is perceived as 'in tune'.
>  
>
>Dan Reed

Hi Dan,
            It is just the opposite, bright hammer mostly fundamental, and
low harmonic development

An example of A4/A5 before and after voicing.

Note A4         Partial      Sec sustain  Vol units    Sec sustain Vol units
                         1          4.46             11.26         4.46
       15.36
                         2          4.04               4.26         4.32
        13.28
                         3          4.32               4.60         4.46
          9.03
                         4          2.51               1.76         4.04
          3.90
                         5          3.48               2.33         3.90
          5.71
                         6          3.76               1.95         3.62
          4.89
                         7          2.65               1.84         3.90
          2.01    

Note A5            1           2.23               3.32         2.23
    10.28
                        2           1.76               0.84         1.86
           4.67
                        3           1.02               0.71         1.95
           4.22
                        4           1.30               0.86         1.30
           3.78
                        5           0.56               0.15         0.30
           4.46

The above is from a new set of C3 hammers On the left very bright. Right is
after initial steam voicing.
The firgures were improved further after finish voicing.

Note the ratio of the amplitude with the octave.

Hope this helps.
Roger
Roger Jolly
Saskatoon, Canada.
306-665-0213
Fax 652-0505