diff options
Diffstat (limited to 'scripts/music.py')
| -rw-r--r-- | scripts/music.py | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/scripts/music.py b/scripts/music.py index a3aee16..2ab6ed2 100644 --- a/scripts/music.py +++ b/scripts/music.py @@ -1,13 +1,13 @@ # -*- coding: utf-8 -*- -"""Cama musical original hecha con las muestras de piano de keysound. +"""Original music bed made with the keysound piano samples. -Muestra NN => nota MIDI NN+20 (01-A-大字2组 = A0 = MIDI 21) -Las progresiones son propias, para que el audio sea libre de derechos. +Sample NN => MIDI note NN+20 (01-A-大字2组 = A0 = MIDI 21) +The progressions are original, so the audio is royalty free. """ import glob, os, wave import numpy as np -PIANO_DIR = "/mnt/Data/GitHub/keysound/audio/piano" +PIANO_DIR = os.environ.get("PIANO_DIR", "/mnt/Data/GitHub/keysound/audio/piano") # keysound samples SR = 44100 _paths, _cache = {}, {} @@ -36,16 +36,16 @@ def load(m): def chord(sym): - """'Am' -> (bajo, triada). Soporta sostenidos y sufijo m.""" + """'Am' -> (bass, triad). Supports sharps and the m suffix.""" q = "min" if sym.endswith("m") else "maj" root = sym[:-1] if sym.endswith("m") else sym r = NOTE[root] - bass = 12 * (2 + 1) + r # octava 2 + bass = 12 * (2 + 1) + r # octave 2 triad = [12 * (4 + 1) + r + i for i in TRIAD[q]] return bass, triad -# progresion + tempo por video +# progression + tempo per video BEDS = { "montyhall": (["Am", "F", "C", "G"], 92), "nueves": (["Em", "C", "G", "D"], 88), @@ -73,8 +73,8 @@ BEDS = { "domino": (["G", "D", "Em", "C"], 104, "motor"), } -# melodias propias: por compas, (tiempo en negras, nota MIDI, duracion en negras) -MELODIAS = { +# original melodies: per bar, (time in quarter notes, MIDI note, duration in quarter notes) +MELODIES = { "motor": [ [(0, 78, 1.5), (1.5, 74, 0.5), (2, 76, 1), (3, 78, 1)], # Bm [(0, 79, 1.5), (1.5, 78, 0.5), (2, 76, 1), (3, 74, 1)], # G @@ -86,7 +86,7 @@ MELODIAS = { def bed(name, total_s, gain=0.30, seed=0): prog, bpm = BEDS[name][:2] - estilo = BEDS[name][2] if len(BEDS[name]) > 2 else None + style = BEDS[name][2] if len(BEDS[name]) > 2 else None beat = 60.0 / bpm measure = 4 * beat eighth = beat / 2 @@ -111,17 +111,17 @@ def bed(name, total_s, gain=0.30, seed=0): while t < total_s + 0.5: sym = prog[k % len(prog)] bass, triad = chord(sym) - if estilo == "motor": - # bajo en corcheas, como un motor; acorde en 1 y 3; melodia arriba + if style == "motor": + # bass in eighth notes, like an engine; chord on 1 and 3; melody on top for j in range(8): hit(bass + (12 if j % 2 else 0), t + j * eighth, 0.34 if j % 2 == 0 else 0.20, max_len=eighth * 0.9) for b_ in (0, 2): - for nota in triad: - hit(nota - 12, t + b_ * beat, 0.13, max_len=beat * 1.8) - vuelta = (k // 4) % 2 # la segunda vuelta, una octava arriba - for (b_, nota, d) in MELODIAS[estilo][k % 4]: - hit(nota + 12 * vuelta, t + b_ * beat, 0.30, max_len=d * beat * 1.05) + for note_txt in triad: + hit(note_txt - 12, t + b_ * beat, 0.13, max_len=beat * 1.8) + turn = (k // 4) % 2 # the second pass, an octave up + for (b_, note_txt, d) in MELODIES[style][k % 4]: + hit(note_txt + 12 * turn, t + b_ * beat, 0.30, max_len=d * beat * 1.05) t += measure k += 1 continue @@ -132,7 +132,7 @@ def bed(name, total_s, gain=0.30, seed=0): for j, note in enumerate(pattern): g = 0.30 if j % 2 == 0 else 0.20 hit(note, t + j * eighth, g, max_len=beat * 1.15) - if k % 4 == 3: # brillito al cerrar la vuelta + if k % 4 == 3: # a little sparkle when the pass closes hit(triad[2] + 12, t + 3.5 * beat, 0.16, max_len=beat) t += measure k += 1 @@ -140,7 +140,7 @@ def bed(name, total_s, gain=0.30, seed=0): buf = buf[:int(total_s * SR)] peak = np.abs(buf).max() + 1e-9 buf *= gain / peak - # entrada y salida suaves + # soft fade in and out fi, fo = int(1.2 * SR), int(2.0 * SR) buf[:fi] *= np.linspace(0, 1, fi)[:, None] buf[-fo:] *= np.linspace(1, 0, fo)[:, None] @@ -148,7 +148,7 @@ def bed(name, total_s, gain=0.30, seed=0): def duck(music, speech, sr=SR, floor_db=-11.0, block=512, release=0.45): - """Baja la musica cuando hay voz (sidechain simple).""" + """Lowers the music when there is voice (simple sidechain).""" mono = np.abs(speech).mean(axis=1) if speech.ndim > 1 else np.abs(speech) nb = len(mono) // block env = mono[:nb * block].reshape(nb, block).max(axis=1) |