Unison Width - was stability issue

[David Ilvedson, RPT]

Roger,

Now that is the trick isn't it?  When is that moment just before "over
voice(d)"?
I would have thought that the bright, brassy sound would have a predominance
of high partials...What do you mean by a higher ratio of fundamental to
higher partials?  If I have a Yamaha hammer that is played a lot, where is
the compression of the felt happening to cause the bright/brassy sound?
Near and around the crown?  Does it ever really go down into the lower
shoulders?  I will be filing a C3's hammers in the next couple of weeks.
The filing will even out the tone but it will still be too bright.  Where
would you suggest I needle?  I'm not interested in steaming right now.  I
would typically be trying to loosen up the upper shoulders...

David I.



>Over voice a hammer, ( shoulders too soft) the tone becomes un focused as
>the partials will be as strong as the fundamental.  Needle the crown too
>much and the note will become dead and muted.
>
>If you get a chance observe the changes on a RCT pianalyser. and all will
>be very clear.
>
>At one time, when teaching voicing classes, I would get all kinds of
>spirited debates on hearing high frequency partials.  By doing the
>alterations and showing the changes on a spectrum analyser, there is no
>discussions.
>For years i thought that bright screaming notes were lots of high
>harmonics, now I know different.
>
>Hope this helps.
>Roger
>
>
>
>
>At 01:45 AM 23/11/00 -0600, you wrote:
>>
>>>
>>> >     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
>>
>>
>>Wait a minute
>>    If I want a soft sound do I want high partials or low fundamental and
>>"low harmonic development"  what ever that is. ?  I am taking you mean
>>"bright hammer" as a hard hammer.   How does a hard hammer give mostly
>>fundamental?
>>
>>I don't understand the data below.  What is or are   "Vol units"  ?
>>---ric.
>>
>>
>>
>>>
>>> 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
>>
>Roger Jolly
>Saskatoon, Canada.
>306-665-0213
>Fax 652-0505
>