The Acme A1 Temperament

[David M. Porritt]

____________________

David M. Porritt, RPT

dporritt at smu.edu

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of b98tu at t-online.de
Sent: Monday, July 02, 2007 9:55 AM
To: Pianotech List
Subject: Re: The Acme A1 Temperament

 

a slight correction is required (correction in bold letters) , sorry for
sending too fast.

regards,

 

Bernhard


-----Original Message-----
Date: Sun, 01 Jul 2007 21:46:06 +0200
Subject: Re: The Acme A1 Temperament
From: "b98tu at t-online.de" <b98tu at t-online.de>
To: "Pianotech List" <pianotech at ptg.org>

Ed, i was not precise with my words...

I meant the open tuned strings, they are fix and not tuned with fifths from
historic keyboard temperaments, but usually tuned with pure fifths.

 

So i should have better said: every string quartet tune quasi ET on the open
strings (slightly narrow fifths, probably quasi P12) to avoid the
pythagorean third of the cello c and the violin e, wich will otherwise
result when using pure fifths.

 

By doing so, the very sharp pytahgorean third between the cello c and the
violin e is transformed into a milder

quasi P12 tempered third.

 

The string quartet has two violins (gdae), one viola(cgda) and a cello(cgda)

 

The cello and the violin have the same tuning, but with the cello a twelfth
fifth lower than the violin.

The cello and the viola have the same tuning, but with the cello an octave
lower than the viola.

 

regards,

 

Bernhard Stopper


-----Original Message-----
Date: Sun, 01 Jul 2007 02:09:48 +0200
Subject: Re: The Acme A1 Temperament
From: A440A at aol.com
To: pianotech at ptg.org

Bernard writes:

<< every

string quartet plays quasi ET (slightly narrow fifths, probably quasi

P12) to avoid the pythagorean third of the cello C and the violin  >>

I disagree.  I have sat in many a performance, and rehearsal, with my SAT in

my lap.  Intonation in a good string quartet is anything but ET,  and in
fact, 
I have had a number of string players mention how everything changes when 
they have to play with a piano.  There are no pure thirds in an ET piano,
but you 
will hear a lot of them in a good quartet.  
  Horn players know that they must play the E differently, depending on 
what key they are in.  This doesn't indicate ET is in use in the
orchestra...

Regards,  

Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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