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kennethreitz
9da3ac8b28
- circle_of_fifths.py — visualize keys around the circle - chord_identifier.py — identify chords from notes and fingerings - key_explorer.py — explore keys, signatures, progressions, borrowed chords - temperament_comparison.py — compare equal, Pythagorean, and meantone - chord_tension.py — analyze tension, consonance, and voice leading - world_scales.py — scales from 6 musical traditions - fretboard_explorer.py — instruments, tunings, capo transposition - midi_converter.py — MIDI ↔ note ↔ frequency reference - progression_writer.py — famous progressions, Nashville numbers, random generation - interval_trainer.py — interval names, songs, and consonance ranking - overtone_series.py — harmonics and why chords sound good - key_detection.py — detect keys from melodies and chord progressions Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
47 lines
1.1 KiB
Python
47 lines
1.1 KiB
Python
"""Identify chords from notes or guitar fingerings."""
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from pytheory import Chord, Fretboard
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print("=== Chord Identification from Notes ===")
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print()
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test_chords = [
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("C", "E", "G"),
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("A", "C", "E"),
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("G", "B", "D", "F"),
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("D", "F#", "A"),
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("Bb", "D", "F"),
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("E", "G#", "B"),
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("C", "Eb", "Gb"),
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("C", "G"),
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("C", "F", "G"),
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("C", "D", "G"),
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]
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for notes in test_chords:
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chord = Chord.from_tones(*notes)
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name = chord.identify() or "Unknown"
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print(f" {', '.join(notes):20s} → {name}")
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print()
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print("=== Chord Identification from Guitar Fingerings ===")
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print()
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fb = Fretboard.guitar()
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# Common guitar chord shapes
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shapes = [
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("Open C", (0, 1, 0, 2, 3, 0)),
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("Open G", (3, 0, 0, 0, 2, 3)),
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("Open D", (2, 3, 2, 0, 0, 0)),
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("Open Am", (0, 1, 2, 2, 0, 0)),
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("Open Em", (0, 0, 0, 2, 2, 0)),
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("Barre F", (1, 1, 2, 3, 3, 1)),
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("Power E5", (0, 0, 0, 0, 2, 0)),
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]
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for label, positions in shapes:
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f = fb.fingering(*positions)
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name = f.identify() or "Unknown"
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print(f" {label:12s} {f} → {name}")
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