HarmonyRules

// MuseScore // // Check Parts - check Soprano, Alto, Tennor, Bass // for conformance to good harmony writing rules.

// Current feature list: // // Checks are based on pp. 5, 6 & 7 of the textbook, "First Year Harmony," by William Lovelock. // Note: This plugin does NOT check whether the leading note rises to tonic in the progression V-I (p.6, 11.f). // The other checks on these pages, 11.a to 11.e, 11.g, 12.a & 12.b are checked. // // Multi-voice checks: // Checks for parallel perfect 5ths and octaves, // including consecutive 5ths and octaves in contrary motion, // and unison to octave and octave to unison. // (note: different intervals that are enharmonically equivalent // to a perfect 5th or octave are NOT detected). // Checks for exposed 5ths and octaves. Note: an exposed 5th between II and V is allowed // by Lovelock's textbook, but this plugin will still mark it as a problem. It is up to // the composer to recognize such exposed 5ths as being acceptable. // // Single voice checks: // The following errors are detected for each voice selected (or all voices if nothing was selected) // All augmented intervals between one note and the next // Diminished 5ths, when they are not followed by a note within the interval // Leaps of a diminished 4th and 7th (if you, unlike me, are not a novice composer, you may know how to use // these intervals correctly; use your discretion). // Leaps of a 6th are better avoided, but should be followed by a note within the interval // Octaves, when they are not preceeded and followed by a note within the interval // Leaps of a 7th, 9th or larger, even with one note intervening // // Text is written to the score above any such intervals detected to notify the // user of their existence, and the notes themselves are changed to red colour. // Using the undo button will easily undo all changes. // // Assumptions made about the score: // Each voice should only have one note at a time (i.e. one note per museScore "chord"). // if a voice contains a chord of two or more notes, it is annotated as an error on the score. // To check your chords properly, each voice should play only one note at a time, as only the // top note of each museScore chord in a single voice is checked. // If nothing is selected, the entire score is checked. // Any number of voices may be checked at once, but if there are more than four voices, consecutive // octaves may be more likely. // For the purposes of analysis for the MULTI-VOICE checks, if different voices contain simultaneous // notes of different lengths, // the longer note(s) are treated as if they were split into shorter notes of the same length as the shortest // simultaneous note. No notes on the score itself are changed (apart from the colour of the notes). // For the purposes of analysis for the SINGLE-VOICE checks, no notes are split. Consecutive notes of the same // pitch ARE TREATED AS ONE NOTE for the analysis (the score itself is not changed). I am only a novice composer. // If you think consecutive notes of the same pitch should not be treated as one, please // email me at c3yvonne7@gmail.com // You can also change this yourself, by finding the calls to readNextNote (almost at the end of this file), // similar to the following (lines 1144, 1152 & 1165): // // readNextNote(curScore, voiceChkd[currVoiceChkd].cursor, selectionEnd, voiceChkd[currVoiceChkd].notes[curIdx], // upToTicks, voiceChkd[currVoiceChkd].staff, voiceChkd[currVoiceChkd].voice, true); // // ... in the section that does the single voice checks, and changing "true" to "false." You have to change // it in all three places. //

// // Copyright (C) 2012 Yvonne Cliff // // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License version 2. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. //

// // This is ECMAScript code (ECMA-262 aka "Java Script") //