Temperature and the Tuning Fork

[Jonathan Best]

Good point.  I will get a sine wave off my computer.


On Jun 28, 2008, at 4:19 AM, Robert Scott wrote:

> Ed Sutton wrote:
>
>>  For the tuning exam, it's probably best to get an electronic A440.
>
> But if you use an electronic A-440, be careful of harmonics.  Most  
> electronic tone generators have strong 2nd and 3rd harmonics.   
> These harmonics will beat with the 2nd and 3rd partial of A4.  And  
> due to inharmonicity, these beats will not go to zero at the same  
> tuning as when the fundamental beats go to zero.  You can train  
> yourself to focus on the fundamental and ignore the 2nd and 3rd  
> partials, but it may not be easy.  If you tune to the 3rd partial  
> you could be off by half a cent at the fundamental, and the  
> fundamental is where you will be evaluated for the setting of A4 in  
> the tuning test.  However a tuning fork is almost pure, so the only  
> beat you will hear is the fundamental.
>
> Robert Scott
> Ypsilanti, Michigan
>
>
>
>

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