Examples of jm.music.data.Note

jm.music.data.Note
The Note class is representative of notes in standard western music notation. It contains data relavent to music note information such as time, duration and pitch. Notes get contained in Phrase objects. Like in tradtional music notation (CPN) notes get played one after the other in the order in which they are added to the Phrase.
!IMPORTANT: notes with a pitch of the minimum integer are rests, those between 0 <> 127 are exactly the same as normal sounding notes numbered like the MIDI specification. Notes with a pitch specified as a double value, e.g., 440.0, are frequency values for the note pitch. In general, note pitch refers to the chromatic key number (as per MIDI) as an int and the note frequency refer to the value in hertz as a double value.
Notes can be added to a phrase like this...
```
 Phrase phrase = new Phrase(0.0); Note note = new Note(C4, CROTCHET, MF); phrase.addNote(note); 
```
The note also has the option to create notes with reasonable default values. This allows a user who is not interested in any performance details to work with notes solely using pitch value and rythmValue like this....
```
 Note note = new Note(C4, CROTCHET); 
```
The final option for building a note also includes the dynamic parameter for minimal performace information.
```
 Note note = new Note(C4, CROTCHET, F); 
```
Comments about the offset parameter: The intention of offset was to allow for 'feel' in score playback. For example, a snare drum might be played slightly ahead or behind the beat, or a sound with a slow attack might need to be triggered early in order to sound in time with other parts.
With this in mind, offset should have no influence on rhythmValue or duration calculations within the jMusic data structure, only when translated to another format (eg MIDI). In your example (offset 0.1, duration 0.8, and rv 1.0) the rendering (MIDI or other that does not support the offset concept) should consider the start time of the note 0.1 bpm later than 'normal' but the duration of the note will be 0.8 bpm from that offset start time. The next note should start 1.0 bpm after the 'normal' startTime (ignoring offset). This allows for offset to be used in cases where performance of music varies from beat to beat, eg., the downbeat is anticipated slightly. In extreme cases this could cause overlapping notes in MIDI translation which need to be 'handled' but we consider this a weakness of the MIDI data specification rather than a problem for jMusic : )
In short, think of offset as "A displacement from the normal start time of a note that allows performance interpretation without distorting the score for compositional or analysis purposes." --------------- @author Andrew Sorensen @version 1.0, Sun Feb 25 18:43:31 2001 @see Phrase

     * Ends the motif in a stable tone
     * @param repeatedNotes
     * @param lCtx
     */
    private void stabilize(List<Note> repeatedNotes, MainPartContext lCtx) {
        Note lastNote = repeatedNotes.get(repeatedNotes.size() - 1);
        // if already stable, make it the tonic. If not stable - resolve.
        if (ToneResolver.isStable(lastNote.getPitch(), lCtx.getCurrentScale())) {
            lastNote.setPitch(ToneResolver.resolveToTonic(lastNote.getPitch(), lCtx.getCurrentScale()));
        } else {
            lastNote.setPitch(ToneResolver.resolve(lastNote.getPitch(), lCtx.getCurrentScale()));
        }
    }

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                    }
                    double lengthToBeat = getLengthToNextDownBeat(lCtx, lCtx.getNormalizedMeasureSize(), measureSize + replacementSize, length, groupSize);
                    if (lengthToBeat != -1 && lengthToBeat < length) {
                        length = lengthToBeat;
                    }
                    Note replacementNote = createNote(lCtx, false, length);
                    // keep the last note of each measure
                    if (measureSize + length >= ctx.getNormalizedMeasureSize()) {
                        replacementNote = note;
                    }

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        boolean firstNotes = Chance.test(60);
        int erasedNotes = 1 + random.nextInt(3);
        int erasedCounter = 0;
        for (int i = 0; i < repeatedNotes.size(); i ++) {
            if (firstNotes || Chance.test(erasedNotes * 100 / repeatedNotes.size())) {
                Note removed = repeatedNotes.remove(i);
                repeatedNotes.add(i, new Rest(removed.getRhythmValue()));
                erasedCounter++;
            }
            if (erasedCounter >= erasedNotes) {
                break;
            }

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    }


    void retrograde(List<Note> repeatedNotes) {
        // reverse the pitches
        for (int i = 0; i < repeatedNotes.size() / 2; i ++) {
            Note note = repeatedNotes.get(i);
            Note mirrorNote = repeatedNotes.get(repeatedNotes.size() - 1 - i);
            int pitch = note.getPitch();
            note.setPitch(mirrorNote.getPitch());
            mirrorNote.setPitch(pitch);
        }
    }

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                        int[] chances = PRIMARY_DRUM_PERCENTAGES;
                        if (j % 2 == 1 || percussions[j] == 46) {
                            chances = SECONDARY_DRUM_PERCENTAGES;
                        }
                        if ((useMiddleBeats && k % 2 == 1 && Chance.test(6)) || Chance.test(chances[k / 2])) {
                            Note note = NoteFactory.createNote(percussions[j], beatNoteLength);
                            if (k % 2 == 1) {
                                note.setDynamic(35 + random.nextInt(8));
                            } else {
                                note.setDynamic(45 + random.nextInt(10));
                            }
                            phr.addNote(note);
                        } else {
                            phr.addRest(new Rest(beatNoteLength));
                        }

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            int measures = 0;
            Note[] currentNotes = null;
            boolean useTwoNoteChords = Chance.test(14);
            Chord chord = null;
            for (int i = 0; i < notes.length; i++) {
                Note currentNote = notes[i];
                if (currentNote.getRhythmValue() == 0) {
                    continue; // rhythm value is 0 for the first notes of a (main-part) chord. So progress to the next
                }
                boolean lastMeasure = measures == ctx.getMeasures() - 1;
                if (currentMeasureSize == 0 && !currentNote.isRest() && !lastMeasure) {
                    boolean preferStable = ToneResolver.needsContrastingChord(firstToneTypes, ToneGroups.UNSTABLE);
                    boolean preferUnstable = ToneResolver.needsContrastingChord(firstToneTypes, ToneGroups.STABLE);
                    // change the chord only in 1/4 of the cases
                    if (currentNotes == null || Chance.test(25)) {
                        // no alternatives for now - only 3-note chords
                        Chord previous = chord;
                        chord = ChordUtils.getChord(ctx, currentNote.getPitch(), previous, scaleChords, scaleChords, scaleChords, preferStable, preferUnstable);
                        if (chord != null) {
                            int[] pitches = chord.getPitches();
                            //remove the middle note in some cases (but make it possible to have three-note chords in a generally two-note phrase)
                            if (pitches.length == 3 && useTwoNoteChords && Chance.test(90)) {
                                pitches = ArrayUtils.remove(pitches, 1);
                            }
                            int count = Chance.test(90) ? (Chance.test(80) ? 4 : 2) : (Chance.test(80) ? 3 : 5);


                            currentNotes = new Note[count];
                            double length = normalizedMeasureSize / count;
                            for (int k = 0; k < count; k++) {
                                Note note = NoteFactory.createNote(pitches[random.nextInt(pitches.length)], length);
                                note.setDynamic(InstrumentGroups.getInstrumentSpecificDynamics(65 + random.nextInt(10), part.getInstrument()));
                                if (specialNoteType != null) {
                                    note.setDuration(note.getRhythmValue() * specialNoteType.getValue());
                                }
                                currentNotes[k] = note;
                            }


                        }

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        boolean hold = Chance.test(20);
        int notesPerMeasure = (int) Math.pow(2, 0 + random.nextInt(4));
        List<Note> notes = new ArrayList<>();
        double noteLength = normalizedMeasureSize / notesPerMeasure;
        if (singleNote && hold) {
            Note note = NoteFactory.createNote(Pitches.C5 + keyNote, normalizedMeasureSize * measures);
            note.setDynamic(InstrumentGroups.getInstrumentSpecificDynamics(55, instrument));
            notes.add(note);
        } else if (singleNote) {
            for (int i = 0; i < notesPerMeasure; i++) {
                Note note = NoteFactory.createNote(Pitches.C5 + keyNote, noteLength);
                note.setDynamic(InstrumentGroups.getInstrumentSpecificDynamics(55, instrument));
                notes.add(note);
            }
        } else {
            int pitch = Pitches.C5 + keyNote;
            for (int i = 0; i < notesPerMeasure; i++) {
                Note note = NoteFactory.createNote(pitch, noteLength);
                note.setDynamic(InstrumentGroups.getInstrumentSpecificDynamics(50, instrument));
                notes.add(note);
                boolean directionUp = random.nextBoolean();
                int step = random.nextInt(3);
                int toneDegree = Arrays.binarySearch(scale.getDefinition(), pitch % 12);
                if (toneDegree > 0) {

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            phrase.addRest(new Rest(ctx.getNormalizedMeasureSize()));
        } else {
            int pitch = getRandomPitch(ctx);
            double effectLength = random.nextDouble() * ctx.getNormalizedMeasureSize();
            effectLength = Math.min(effectLength, ctx.getNormalizedMeasureSize());
            Note note = NoteFactory.createNote(pitch, effectLength);
            phrase.add(note);
            double lastRest = ctx.getNormalizedMeasureSize() - effectLength;
            if (lastRest > 0) {
                phrase.add(new Rest(lastRest));
            }

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        if (PartConfigurer.isRegularMetre(ctx) && Chance.test(50) && ctx.getParts().get(PartType.PERCUSSIONS) == null && score.getTempo() > 115 && (needsBass ? hasBass : true)) {
            ctx.setFourToTheFloor(true);
            drumPart.setChannel(9);
            for (int i = 0; i < ctx.getMeasures(); i++) {
                for (int k = 0; k < 4; k++) {
                    Note note = NoteFactory.createNote(35 + k % 2, ctx.getNormalizedMeasureSize() / 4);
                    phrase.add(note);
                }
            }
        } else {
            for (int i = 0; i < ctx.getMeasures(); i++) {
                Note note = NoteFactory.createNote(40 + random.nextInt(30), ctx.getNormalizedMeasureSize() / 4);
                phrase.add(note);
                phrase.add(new Rest(ctx.getNormalizedMeasureSize() - note.getRhythmValue()));
            }
        }


        drumPart.add(phrase);

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                        if (dullBass) {
                            degreeIdx = Chance.choose(dullBassPercentages);
                        } else {
                            degreeIdx = Chance.choose(degreePercentages);
                        }
                        Note note = NoteFactory.createNote(JMC.C3 + ctx.getKeyNote() + currentScale.getDefinition()[degreeIdx], ctx.getNormalizedMeasureSize() / 2);
                        note.setDynamic(InstrumentGroups.getInstrumentSpecificDynamics(60 + random.nextInt(15), bassPart.getInstrument()));
                        if (durationModifier > 0) {
                            note.setDuration(note.getRhythmValue() * durationModifier);
                        }
                        bassPhrase.addNote(note);
                    } else {
                        bassPhrase.addRest(new Rest(ctx.getNormalizedMeasureSize() / 2));
                    }

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Related Classes of jm.music.data.Note

com.music.AccompanimentPartGenerator

com.music.Arpeggiator

com.music.BassPartGenerator

com.music.DroneGenerator

com.music.EffectsGenerator

com.music.LengthTest

com.music.MainPartGenerator

com.music.MusicXmlRenderer

com.music.PadsGenerator

com.music.PercussionGenerator

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