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Fix audio bug #28

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merged 2 commits into from
Apr 16, 2024
Merged

Fix audio bug #28

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bfbb896
fix audio
loubbrad Apr 16, 2024
4b7fd4f
format
loubbrad Apr 16, 2024
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Binary file removed amt/assets/mel_filters.npz
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30 changes: 30 additions & 0 deletions amt/audio.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,9 @@
import random
import torch
import torchaudio
import torch.nn.functional as F
import torchaudio.functional as AF
import numpy as np

from amt.config import load_config
from amt.tokenizer import AmtTokenizer
Expand All @@ -22,6 +24,34 @@
TOKENS_PER_SECOND = SAMPLE_RATE // N_SAMPLES_PER_TOKEN # 20ms per audio token


def pad_or_trim(array, length: int = N_SAMPLES, *, axis: int = -1):
"""
Pad or trim the audio array to N_SAMPLES, as expected by the encoder.
"""
if torch.is_tensor(array):
if array.shape[axis] > length:
array = array.index_select(
dim=axis, index=torch.arange(length, device=array.device)
)

if array.shape[axis] < length:
pad_widths = [(0, 0)] * array.ndim
pad_widths[axis] = (0, length - array.shape[axis])
array = F.pad(
array, [pad for sizes in pad_widths[::-1] for pad in sizes]
)
else:
if array.shape[axis] > length:
array = array.take(indices=range(length), axis=axis)

if array.shape[axis] < length:
pad_widths = [(0, 0)] * array.ndim
pad_widths[axis] = (0, length - array.shape[axis])
array = np.pad(array, pad_widths)

return array


# Refactor default params are stored in config.json
class AudioTransform(torch.nn.Module):
def __init__(
Expand Down
23 changes: 12 additions & 11 deletions amt/data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -106,15 +106,18 @@ def get_wav_mid_segments(

def pianoteq_cmd_fn(mid_path: str, wav_path: str):
presets = [
"C. Bechstein",
"C. Bechstein Close Mic",
"C. Bechstein Under Lid",
"C. Bechstein 440",
"C. Bechstein Recording",
"C. Bechstein Werckmeister III",
"C. Bechstein Neidhardt III",
"C. Bechstein mesotonic",
"C. Bechstein well tempered",
"C. Bechstein DG Prelude",
"C. Bechstein DG Sweet",
"C. Bechstein DG Felt I",
"C. Bechstein DG Felt II",
"C. Bechstein DG D 282",
"C. Bechstein DG Recording 1",
"C. Bechstein DG Recording 2",
"C. Bechstein DG Recording 3",
"C. Bechstein DG Cinematic",
"C. Bechstein DG Snappy",
"C. Bechstein DG Venue",
"C. Bechstein DG Player",
"HB Steinway D Blues",
"HB Steinway D Pop",
"HB Steinway D New Age",
Expand All @@ -137,8 +140,6 @@ def pianoteq_cmd_fn(mid_path: str, wav_path: str):
"HB Steinway D Cabaret",
"HB Steinway D Bright",
"HB Steinway D Hyper Bright",
"HB Steinway D Prepared",
"HB Steinway D Honky Tonk",
]

preset = random.choice(presets)
Expand Down
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