Pattern_Generator.py

import numpy as np
import mido, os, pickle, yaml, argparse, math, librosa, hgtk, logging
from tqdm import tqdm
from pysptk.sptk import rapt
from typing import List, Tuple
from argparse import Namespace  # for type
import torch
from typing import Dict

from meldataset import mel_spectrogram, spectrogram, spec_energy
from Arg_Parser import Recursive_Parse

def Convert_Feature_Based_Music(
    music: List[Tuple[float, str, int]],
    sample_rate: int,
    frame_shift: int,
    consonant_duration: int= 3,
    equality_duration: bool= False
    ):
    previous_used = 0
    lyrics = []
    notes = []
    durations = []
    for message_time, lyric, note in music:
        duration = round(message_time * sample_rate) + previous_used
        previous_used = duration % frame_shift
        duration = duration // frame_shift

        if lyric == '<X>':
            lyrics.append(lyric)
            notes.append(note)
            durations.append(duration)
        else:
            lyrics.extend(Decompose(lyric))
            notes.extend([note] * 3)
            if equality_duration or duration < consonant_duration * 3:
                split_duration = [duration // 3] * 3
                split_duration[1] += duration % 3
                durations.extend(split_duration)
            else:
                durations.extend([
                    consonant_duration,    # onset
                    duration - consonant_duration * 2, # nucleus
                    consonant_duration # coda
                    ])

    return lyrics, notes, durations

def Expand_by_Duration(
    lyrics: List[str],
    notes: List[int],
    durations: List[int],
    ):
    lyrics = sum([[lyric] * duration for lyric, duration in zip(lyrics, durations)], [])
    notes = sum([*[[note] * duration for note, duration in zip(notes, durations)]], [])
    durations = [index for duration in durations for index in range(duration)]

    return lyrics, notes, durations

def Decompose(syllable: str):
    onset, nucleus, coda = hgtk.letter.decompose(syllable)
    coda += '_'

    return onset, nucleus, coda