New piece for the historic studio at EMS
I'm currently Working on a 7-limit scale to complement the original pitches I started working on for the piece. This is constructed as a harmonic space1 in two dimensions, five and seven, and can has the following relations:
49/32 | ||||
7/5 | 7/4 | 35/32 | ||
32/25 | 8/5 | 1/1 | 5/4 | 25/16 |
64/35 | 8/7 | 40/21 | ||
64/49 |
In notation:
![image notation of scale](/assets/images/blog/5-7-space-scale.png)
Since one of my main interests here is to find interesting beating patterns, this particular pitch set provides a few pairs that gives nice patterns. One of these, \(\frac{32}{25}\) against \(\frac{5}{4}\), has a simple rhythmic pattern, given the fundamental is 200Hz, of \(\frac{1}{6}\) as is given by:
\(\frac{1}{200(\frac{32}{25} - \frac{5}{4})}\)
Footnotes:
Tenney (2008) On ’Crystal Growth’ in Harmonic Space (1993 - 1998)., Contemporary Music Review.