The Three Layers of a Phrase

<p>A phrase is built on 3 layers : scale, harmony and intruments.<br /> The scale is the framwork of harmony, it’s a volontary constraint used to bring creativity, like constraints often do.<br /> Harmony is a following of chords, and does note necessarily follow it’s scale.<br /> The vibration of air is realised by instruments that loosely follow harmony. In our application we will only allow guitar tuned <span class="caps">EADGAD</span> (with capo or not) chord diagrams, but the architechture will leave room for others to add other instruments.</p> <h1>Scale</h1> <p><iframe src="http://www.lame-spirale.net/c5.php?c=111101000101&f=0&size=100" width="100" height="100"></iframe></p> <p>The choice of a scale is important as it will determine the phrase’s color.</p> <h3>Classic scales</h3> <p>Many musicians will choose the known scales like major, minors ones. This scale have such popularity for a reason : they based on logical and mathematical research and they do “work”. Their popularity also make them well known by intrumentists which is really helpful.</p> <h3>Circle tweak</h3> <p>I think i found a scale based on logic which hasn’t be used too much yet. So it’s possible to have rational but musical data based on the circle.<br /> The wiki-like nature of the dictionary may also help to spread home-made scales, provided there is a wide enough community.</p> <h1>Harmony</h1> <p><iframe src="http://www.lame-spirale.net/c5.php?c=1100010001&f=0&size=100" width="100" height="100"></iframe><iframe src="http://www.lame-spirale.net/c5.php?c=100100000101&f=11&size=100" width="100" height="100"></iframe><iframe src="http://www.lame-spirale.net/c5.php?c=011001000001&f=1&size=100" width="100" height="100"></iframe></p> <h2>Using a scale</h2> <h3>In the scale</h3> <p>Probably the more common way of making music is to play “in”. The dictionary will suggest you (probably in a drop-box interface) all known c5 that are contained within the scale, classified in a meaningful manner.</p> <p>The classifying part may be (not decided yet) :</p> <ul> <li>like the more used chords, again, if a community provide that power.</li> <li>mathematical</li> <li>musical (fondamental major chord first etc.)</li> <li>a mix of theses choices</li> <li>let the user choose, maybe in his user settings</li> </ul> <p>What is your position on that ? Please let us know.</p> <h3>Out the scale</h3> <p>Out the scale is as easy as just applying a “contrary” on the circle (see Interactive C5 section) and put the same drop box as above. However chances are it will not be used that much. It will be an interface decision.</p> <h2>Without a scale</h2> <p>If you either don’t have a scale, or you want to forget or enrich it, you can build your own chord. The tool to build a chord is the same a building a scale : it’s the interactive C5. You can start from any circle you like, add notes by the hand or apply transformations.<br /> Typically a enrichment will start from an “in” chord, and add a note or two.</p> <h3>Chord Substitution</h3> <p>A difficult to implement but useful feature would be a <a href="http://en.wikipedia.org/wiki/Substitute_chord">chord substitution</a> suggestion.</p> <h3>Self construct circle</h3> <p>If the circle is not already in the dictionary it will be saved straight away.</p> <h1>Voicing</h1> <p><iframe src="http://www.lame-spirale.net/chrd.php?c=1n211n&size=75" width="75" height="75"></iframe><br /> <iframe src="http://www.lame-spirale.net/chrd.php?c=n1333n&size=75" width="75" height="75"></iframe><br /> <iframe src="http://www.lame-spirale.net/chrd.php?c=n3535n&size=75" width="75" height="75"></iframe></p> <p>On what criteria does the guitar player choses a voicing in the context of the song ?</p> <h3>Harmonic criteria</h3> <p>Here again, the guitar player will be able to choose a voicing in a suggestion drop-box. Like harmonic suggestion, subsets also appear. That means that he has the freedom to forget notes in his interpretation of the phrase (ie play only a Dm when the circle is a minor 7 typoe chord). However, he won’t be able to add notes to the harmony without modifying the circle, cause it’s the reference.</p> <h3>Voices</h3> <p>Because some (very good) guitar player use <a href="http://en.wikipedia.org/wiki/Voice_leading">voice leading</a> as effective technique, c5 will provide a suggestions filter based on voices.<br /> The obvious feature is to count the number of voices but i hope we can find a algorithm that can “read the guitar player’s mind”.</p> <h3>Inversions</h3> <p>C5 will hopefully help the guitar player to filter by inversion</p> <h3>Self construct voicing</h3> <p>With an <span class="caps">SVG</span> interface, the user will be able to enter it’s own voicing. And more importantly, this voicing will be saved in the open guitar voicing dictionary straight away. It’s an easy away to fill the dictionary with effective voicings.</p> 2009-11-26T07:30:52-08:00 192378 the-three-layers-of-a-phrase

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2009-04-21T04:38:19-07:00

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