rand_666   tritone_1   noise_self/default/default7/triadic/345   bridge_30   hocket_10,15,25   size_70

All items are optional.

• rand: is the seed for the random number generator

• tritone: if specified, forbids series with tritones between two consecutive notes

• noise: classifies chords as consonant, or dissonant (noise)
  • default

    This is an approximation to basic triadic harmony. Thirds and sixths get very high grades, fifth and octaves somewhat lower grades, major seconds are bad, minor seconds worst... Chords are graded by averaging all the intervals they contain.

  • triadic

    Only triads and their subsets are consonant.

  • default7

    Like triadic, but V7 and some of its subsets are consonant.

  • self

    This means that only groups of 1,2,3 and 4 notes from the series, transposed or inverted will be considered consonant.

    For instance, if the series is:

    
    it should be harmonized only by the chords:
    
    with their transpositions and inversions.

  • 345

    A code like this means that the intervals of 3,4 and 5 semitones and their inversions are consonant. Unisons/octaves are always consonant (according to Schoenberg they should be dissonant) .
    All the other intervals are dissonant.

• bridge: probability, in percents of extending notes across rests (suspensions, may create dissonance)

• hocket: three numbers, separated by commas (no blanks). These are used as limits for generating hockets, i.e. splitting, in certain cases, notes longer than the limits into shorter notes and rests. Default: 10,15,20

• size: how many phrases to generate (default: 100)

Defines the series

writes PARM.txt which contains the input parameters and the series, e.g.:

{
SRAND 666
SER 8 3 1 6 7 4 10 2 9 5 11 0 0 11 5 9 2 10 4 7 6 1 3 8 4 9 11 6 5 8 2 10 3 7 1 0 0 1 7 3 10 2 8 5 6 11 9 4
NOISE SELF
BRIDGE 30
HOCKET 10,15,25
SIZE 70
}

Modifies the phrases generated by newathnj by bridging notes over rests

• Does not bridge if bridge_0 is specified in the parameter;
• does not bridge over general pauses;
• otherwise, if two chords contain the same note, and there are rests in some voice in every position between the two chords, those rests get replaced by the common note. This is actually random, with probabability increasing with the parameter bridge and the number of chords between the identical notes.

Definitely spoils harmony (creates suspensions)

The results are written to STANDARD OUTPUT

Reads noizez.txt : grades for all combinations of <= 12 distinct tones