Tuning

[Jim Coleman, Sr.]

Buenos Dias Carlos:

I will excuse your english if you  will excuse my spanish.

1. You are correct that the Pure 5th does not beat at the 3/2 
relationship.

2. Even though F3 was not tuned yet, the M3rd-M6th test is valid for
proving the A3-D4 4th and for proving the A3-A4 octave using F3-A3
as 1.5 beats slower than F3-A4. The 1.5 beats will vary from one
piano to the next depending upon the inharmonicity curve of that part
of the stringing scale.

3. 1.5 bps es egual a una y media por secundo.

As you stretch the single octave A3-A4 to approximalmente 1.5 beats,
the 5ths will become near zero beat while the 4ths will become faster.
If everything else is done correctly, you will still have equal 
temperament.

Gracias.

Jaime Coleman, Sr.


On 24 Sep 1997 Orgacar@siscor.bibnal.edu.ar wrote:

> Dear list:
> 
> Ref. issue equal temperament by pure 5ths.
> 1- word pure and perfect.
>       word perfect  5th is when its fits with theoretical rules of
> music, harmony. ratio 3/2 in interval.
>       word pure 5th is when the 5ths it are not beat.
> that is OK?
> 
> 2- In step 2 tune D4 pure to A4, test F3-D4 6th equal F3-A4 10th.
>      If the method progress is 1- A4 ; 2- D4. Is possible check F3-D4?  
>      F4 is a new note in the following. Who is anyone tune F4, for
> checking D4.
> 
> 3- in step 3 and more 1.5 beat is one beat in 5 seconds or one and half
> beat in one second.
> 
> Excuse for my bad English   
> Carlos
> 
> Ing. Carlos Merlassino
> ATAPRA secretary ( Association of piano tuner)
> organbuilder and piano tuner 
> of University of Buenos Aires
> 
> orgacar@siscor.bibnal.edu.ar
>