When voicing a cue for orchestra, which doubling, balance and dynamic techniques do Berlioz and Forsyth give, where do they disagree or qualify, and what transfers to a sampled or virtual orchestra?

The two treatises converge on concrete, checkable rules. For energy in the strings, double first violins by second violins in unison rather than an octave lower unless the line lies very high (Berlioz); do not add violas in octaves beneath unison violins, use the violas to reinforce the cellos in unison instead (Berlioz); keep cellos with basses unless a strong effect is planned (Berlioz); do not double a trombone bass theme with bassoons, cellos and basses (Berlioz via R. Strauss's annotation, quoted by Forsyth). Forsyth adds the numerical logic of balance: dividing a part halves the players and their dynamic efficiency; second violins seated with f-holes turned away count for about half the firsts; and unequal 'telling' power breaks contrapuntal balance in older scores. Neither treatise addresses samples; the transfer to sampled orchestras is synthesis and testable. Curator qualifications: All rules verified in the OCR text, with de-hyphenated, whitespace-normalised search for the Forsyth passages. The producer's conflicting-evidence entry is correctly labelled a qualification, not a contradiction: Berlioz/Strauss reject trombone-plus-bass doubling in big tuttis, while Forsyth allows tuba reinforcement of double basses in a very large orchestra at mp-mf. Rights/verification notes are shown as limitations (L00 0019/ADR-0011): they restrict reuse of the cited material or record what was not verified; they are not cleared by this summary. Limitations: [component_reuse_restriction] Public-domain status of the texts/translation: library statement only (no known US restrictions), not a licence; curation hold on reuse outside the US. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://archive.org/details/treatiseonmodern1900berl",
      "note": "Berlioz, Treatise (1900 Novello ed.) IA djvu text L1971-1990; Forsyth, Orchestration (Cornell scan) IA djvu text"
    },
    {
      "url": "https://archive.org/details/cu31924022381440",
      "note": "Berlioz, Treatise (1900 Novello ed.) IA djvu text L1971-1990; Forsyth, Orchestration (Cornell scan) IA djvu text"
    }
  ]
}