H1K0
ea32bf43b2
Adds src/external_converters/mcgill_to_chord.py with two public functions:
- convert_song(song_dir, output_dir) — converts one salami_chords.txt to
per-section .chord files (4–16 bars each, style=other)
- convert_dataset(dataset_dir, output_dir) — batch converts all songs
Key decisions:
- Harte qualities mapped to our 18-quality vocabulary; hdim7 → m7b5,
parenthetical alterations (e.g. 7(b9)) handled via regex
- Bar duration estimated from median non-trivial chord duration
- Mode (major/minor) inferred from tonic chord quality distribution
- Sections with <4 or >16 bars are skipped with a logged reason
- Unrecognized Harte chords skip the whole section (no silent corruption)
48 new tests in tests/test_mcgill_converter.py; total suite 223 passed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
16 lines
240 B
Plaintext
16 lines
240 B
Plaintext
# artist: Test Artist
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# title: Test Song
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# metre: 4/4
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# tonic: C
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0.000000 Z
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4.000000 A,verse C:maj
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8.000000 . F:maj
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12.000000 . G:7
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16.000000 . C:maj
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20.000000 B,chorus F:maj
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24.000000 . C:maj
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28.000000 . G:7
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32.000000 . C:maj
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36.000000 Z
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