Ryan ASCII notation: Difference between revisions
Wikispaces>daveryan23 **Imported revision 602219946 - Original comment: ** |
Wikispaces>daveryan23 **Imported revision 602221310 - Original comment: ** |
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<h2>IMPORTED REVISION FROM WIKISPACES</h2> | <h2>IMPORTED REVISION FROM WIKISPACES</h2> | ||
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | ||
: This revision was by author [[User:daveryan23|daveryan23]] and made on <tt>2016-12-15 06: | : This revision was by author [[User:daveryan23|daveryan23]] and made on <tt>2016-12-15 06:54:07 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>602221310</tt>.<br> | ||
: The revision comment was: <tt></tt><br> | : The revision comment was: <tt></tt><br> | ||
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | ||
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Some music created using this notation is available at: | Some music created using this notation is available at: | ||
* Dave Ryan's SoundCloud page: | * Dave Ryan's SoundCloud page: http://soundcloud.com/daveryan23/tracks | ||
Further work would be a computer / web stave where the commas could be used as accidentals, to enable anyone to make free-JI music online. If anyone wants to help with this project (as of Dec 2016), please contact David Ryan.</pre></div> | |||
<h4>Original HTML content:</h4> | <h4>Original HTML content:</h4> | ||
<div style="width:100%; max-height:400pt; overflow:auto; background-color:#f8f9fa; border: 1px solid #eaecf0; padding:0em"><pre style="margin:0px;border:none;background:none;word-wrap:break-word;width:200%;white-space: pre-wrap ! important" class="old-revision-html"><html><head><title>Ryan ASCII notation</title></head><body>A system using either plaintext (ASCII) or richtext to notate any frequency in Just Intonation (JI).<br /> | <div style="width:100%; max-height:400pt; overflow:auto; background-color:#f8f9fa; border: 1px solid #eaecf0; padding:0em"><pre style="margin:0px;border:none;background:none;word-wrap:break-word;width:200%;white-space: pre-wrap ! important" class="old-revision-html"><html><head><title>Ryan ASCII notation</title></head><body>A system using either plaintext (ASCII) or richtext to notate any frequency in Just Intonation (JI).<br /> | ||
Also names the pitch classes, which are notes up to octave equivalence.<br /> | Also names the pitch classes, which are notes up to octave equivalence.<br /> | ||
Developed in 2015-2016 by the musician and music theorist David Ryan<br /> | Developed in 2015-2016 by the musician and music theorist David Ryan<br /> | ||
<ul><li>Paper (pre-print) for defining all the prime commas by algorithm and the basic notation: <!-- ws:start:WikiTextUrlRule: | <ul><li>Paper (pre-print) for defining all the prime commas by algorithm and the basic notation: <!-- ws:start:WikiTextUrlRule:104:http://arxiv.org/abs/1612.01860 --><a class="wiki_link_ext" href="http://arxiv.org/abs/1612.01860" rel="nofollow">http://arxiv.org/abs/1612.01860</a><!-- ws:end:WikiTextUrlRule:104 --></li><li>Paper (pre-print) for defining how the notation breaks down into components and enables key changes and transposition: <!-- ws:start:WikiTextUrlRule:105:http://arxiv.org/abs/1508.07739 --><a class="wiki_link_ext" href="http://arxiv.org/abs/1508.07739" rel="nofollow">http://arxiv.org/abs/1508.07739</a><!-- ws:end:WikiTextUrlRule:105 --></li></ul><br /> | ||
<strong>Abstract (for 2 papers above):</strong><br /> | <strong>Abstract (for 2 papers above):</strong><br /> | ||
In Just Intonation every rational frequency has a prime factorisation. This can be reconstructed from an approximate 3-limit component, and a series of microtonal 'prime comma' adjustments, one for each higher prime (5 and above) present in the original prime factorisation. Each prime comma is of the form [p] = 2^a 3^b p. This means that different prime commas don't interact, which is helpful for notation since the effect of each higher prime is separated out, which will aid mapping between notations and frequencies. Prime commas are assigned by algorithm. The algorithm performs a tradeoff between using low numbers in the comma fraction, and keeping the comma as small as possible. All commas are microtonal, less than a semitone, the widest comma is thought to be [13]=26/27. Commas are only considered between a specific set of bounds for 3^b, since larger values of b become unmusical. Plaintext (ASCII) nnotations are defined of the form Lz[x/y] which have alternative forms in richtext. The notation breaks down into a set of four components: octave number, diatonic scale note, sharps/flats, prime commas or rational comma. This aids inversion, multiplication, division of notations, and enables transposition of music into any other key.<br /> | In Just Intonation every rational frequency has a prime factorisation. This can be reconstructed from an approximate 3-limit component, and a series of microtonal 'prime comma' adjustments, one for each higher prime (5 and above) present in the original prime factorisation. Each prime comma is of the form [p] = 2^a 3^b p. This means that different prime commas don't interact, which is helpful for notation since the effect of each higher prime is separated out, which will aid mapping between notations and frequencies. Prime commas are assigned by algorithm. The algorithm performs a tradeoff between using low numbers in the comma fraction, and keeping the comma as small as possible. All commas are microtonal, less than a semitone, the widest comma is thought to be [13]=26/27. Commas are only considered between a specific set of bounds for 3^b, since larger values of b become unmusical. Plaintext (ASCII) nnotations are defined of the form Lz[x/y] which have alternative forms in richtext. The notation breaks down into a set of four components: octave number, diatonic scale note, sharps/flats, prime commas or rational comma. This aids inversion, multiplication, division of notations, and enables transposition of music into any other key.<br /> | ||
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<br /> | <br /> | ||
Some music created using this notation is available at:<br /> | Some music created using this notation is available at:<br /> | ||
<ul><li>Dave Ryan's SoundCloud page: <!-- ws:start:WikiTextUrlRule: | <ul><li>Dave Ryan's SoundCloud page: <!-- ws:start:WikiTextUrlRule:106:http://soundcloud.com/daveryan23/tracks --><a class="wiki_link_ext" href="http://soundcloud.com/daveryan23/tracks" rel="nofollow">http://soundcloud.com/daveryan23/tracks</a><!-- ws:end:WikiTextUrlRule:106 --></li></ul><br /> | ||
Further work would be a computer / web stave where the commas could be used as accidentals, to enable anyone to make free-JI music online. If anyone wants to help with this project (as of Dec 2016), please contact David Ryan.</body></html></pre></div> | |||