Composition Programs
Embedded Files
Method Lead Head Generator
Arrangeur was designed by Edwin Hermann. It allows touches of either single methods or spliced methods to be constructed, one lead at a time.
The first page allows a stage to be selected from a drop-down list, a starting row to be defined (the default is rounds), and a touch length to be set. Upon clicking 'Go', an opportunity to add a method, either by name or by place notation, is presented. Upon clicking OK, the initial lead head is displayed, along with buttons to add a plain lead, a bobbed lead, or a single lead. The colour of the buttons indicates the status of the lead head that will be produced. Charcoal indicates a true lead.
Leads are shown red if the extent includes rows that are repeated beyond the allowable number of times. The permissible number of times is defined as the touch length divided by n-factorial, where n is the stage (number of bells). For example, a doubles method where the composer sets the extent length to 240 will highlight red any leads that contain rows rung more than twice. Red means you're heading into falseness territory for the stage and extent length that you've chosen. Leads are shown in yellow if they take us back to the starting row (typically rounds, but you can set the starting row to be any other value). Leads are shown in green if they take us back to the starting row, AND all rows (up to that point) are rung the same number of times. A green row indicates the end of a true extent (either a normal extent or a multi-block extent). Access Arrangeur here.
Composition Program
Compositeur was designed by Edwin Hermann. It allows compositions for touches of single methods to be generated.
Select the stage of your method in the top box. If you know the name of your method, enter it in the Name box. If the name matches methods in the Central Council library a drop down list will show. You can just select the method you want. If a drop-down does not appear, there is no method with that name in the library. If you have chosen a method from the library, the Notation, Bob and Single boxes are automatically filled. The bobs and singles are 'standard'. If you want different bobs and/or singles, alter the notation in the boxes. If your method is not in the library, you must fill in the Notation, Bob and Single boxes yourself. The notation is in the form -16-16-16,12. Enter the length of touch you want in the Length box. If you enter a length that is not possible for your method, the program will prompt you with suggestions for valid lengths. You can dramatically reduce the number of results (and therefore the search time) by specifying either a maximum number of calls or, separately, the maximum number of bobs and/or singles. This is advisable with stages above minor. By putting 0 in the Max cross tenors box, you can avoid 65s, 87s, 9Ts, etc, at backstroke. This also reduces the number of compositions and the search time. The "Minimise on" feature in Compositeur acts as a "sinking lid". So if you specify "minimise on number of crossed tenors", it'll identify the number of crossed tenors in the first result, and set that as the maximum. Any subsequent compositions with a greater number of crossed tenors are skipped. As it finds compositions with fewer crossed tenors, that number becomes the new maximum. This "sinking lid" has a narrowing effect, and therefore, the algorithm gets faster and faster. It's useful if you're not sure whether or not any combinations exist without crossed tenors, but are still interested in finding compositions with crossed tenors if none exist without. Access Compositeur here.
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