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import os
import sys
sys.path.insert(1, os.path.join(sys.path[0], '../utils'))
import numpy as np
import argparse
import librosa
import matplotlib.pyplot as plt
import torch
from utilities import create_folder, get_filename
from models import *
from pytorch_utils import move_data_to_device
import config
def audio_tagging(args):
"""Inference audio tagging result of an audio clip.
"""
# Arugments & parameters
sample_rate = args.sample_rate
window_size = args.window_size
hop_size = args.hop_size
mel_bins = args.mel_bins
fmin = args.fmin
fmax = args.fmax
model_type = args.model_type
checkpoint_path = args.checkpoint_path
audio_path = args.audio_path
device = torch.device('cuda') if args.cuda and torch.cuda.is_available() else torch.device('cpu')
classes_num = config.classes_num
labels = config.labels
# Model
Model = eval(model_type)
model = Model(sample_rate=sample_rate, window_size=window_size,
hop_size=hop_size, mel_bins=mel_bins, fmin=fmin, fmax=fmax,
classes_num=classes_num)
checkpoint = torch.load(checkpoint_path, map_location=device)
model.load_state_dict(checkpoint['model'])
# Parallel
if 'cuda' in str(device):
model.to(device)
print('GPU number: {}'.format(torch.cuda.device_count()))
model = torch.nn.DataParallel(model)
else:
print('Using CPU.')
# Load audio
(waveform, _) = librosa.core.load(audio_path, sr=sample_rate, mono=True)
waveform = waveform[None, :] # (1, audio_length)
waveform = move_data_to_device(waveform, device)
# Forward
with torch.no_grad():
model.eval()
batch_output_dict = model(waveform, None)
clipwise_output = batch_output_dict['clipwise_output'].data.cpu().numpy()[0]
"""(classes_num,)"""
sorted_indexes = np.argsort(clipwise_output)[::-1]
# Print audio tagging top probabilities
for k in range(10):
print('{}: {:.3f}'.format(np.array(labels)[sorted_indexes[k]],
clipwise_output[sorted_indexes[k]]))
# Print embedding
if 'embedding' in batch_output_dict.keys():
embedding = batch_output_dict['embedding'].data.cpu().numpy()[0]
print('embedding: {}'.format(embedding.shape))
return clipwise_output, labels
def sound_event_detection(args):
"""Inference sound event detection result of an audio clip.
"""
# Arugments & parameters
sample_rate = args.sample_rate
window_size = args.window_size
hop_size = args.hop_size
mel_bins = args.mel_bins
fmin = args.fmin
fmax = args.fmax
model_type = args.model_type
checkpoint_path = args.checkpoint_path
audio_path = args.audio_path
device = torch.device('cuda') if args.cuda and torch.cuda.is_available() else torch.device('cpu')
classes_num = config.classes_num
labels = config.labels
frames_per_second = sample_rate // hop_size
# Paths
fig_path = os.path.join('results', '{}.png'.format(get_filename(audio_path)))
create_folder(os.path.dirname(fig_path))
# Model
Model = eval(model_type)
model = Model(sample_rate=sample_rate, window_size=window_size,
hop_size=hop_size, mel_bins=mel_bins, fmin=fmin, fmax=fmax,
classes_num=classes_num)
checkpoint = torch.load(checkpoint_path, map_location=device)
model.load_state_dict(checkpoint['model'])
# Parallel
print('GPU number: {}'.format(torch.cuda.device_count()))
model = torch.nn.DataParallel(model)
if 'cuda' in str(device):
model.to(device)
# Load audio
(waveform, _) = librosa.core.load(audio_path, sr=sample_rate, mono=True)
waveform = waveform[None, :] # (1, audio_length)
waveform = move_data_to_device(waveform, device)
# Forward
with torch.no_grad():
model.eval()
batch_output_dict = model(waveform, None)
framewise_output = batch_output_dict['framewise_output'].data.cpu().numpy()[0]
"""(time_steps, classes_num)"""
print('Sound event detection result (time_steps x classes_num): {}'.format(
framewise_output.shape))
sorted_indexes = np.argsort(np.max(framewise_output, axis=0))[::-1]
top_k = 10 # Show top results
top_result_mat = framewise_output[:, sorted_indexes[0 : top_k]]
"""(time_steps, top_k)"""
# Plot result
stft = librosa.core.stft(y=waveform[0].data.cpu().numpy(), n_fft=window_size,
hop_length=hop_size, window='hann', center=True)
frames_num = stft.shape[-1]
fig, axs = plt.subplots(2, 1, sharex=True, figsize=(10, 4))
axs[0].matshow(np.log(np.abs(stft)), origin='lower', aspect='auto', cmap='jet')
axs[0].set_ylabel('Frequency bins')
axs[0].set_title('Log spectrogram')
axs[1].matshow(top_result_mat.T, origin='upper', aspect='auto', cmap='jet', vmin=0, vmax=1)
axs[1].xaxis.set_ticks(np.arange(0, frames_num, frames_per_second))
axs[1].xaxis.set_ticklabels(np.arange(0, frames_num / frames_per_second))
axs[1].yaxis.set_ticks(np.arange(0, top_k))
axs[1].yaxis.set_ticklabels(np.array(labels)[sorted_indexes[0 : top_k]])
axs[1].yaxis.grid(color='k', linestyle='solid', linewidth=0.3, alpha=0.3)
axs[1].set_xlabel('Seconds')
axs[1].xaxis.set_ticks_position('bottom')
plt.tight_layout()
plt.savefig(fig_path)
print('Save sound event detection visualization to {}'.format(fig_path))
return framewise_output, labels
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Example of parser. ')
subparsers = parser.add_subparsers(dest='mode')
parser_at = subparsers.add_parser('audio_tagging')
parser_at.add_argument('--sample_rate', type=int, default=32000)
parser_at.add_argument('--window_size', type=int, default=1024)
parser_at.add_argument('--hop_size', type=int, default=320)
parser_at.add_argument('--mel_bins', type=int, default=64)
parser_at.add_argument('--fmin', type=int, default=50)
parser_at.add_argument('--fmax', type=int, default=14000)
parser_at.add_argument('--model_type', type=str, required=True)
parser_at.add_argument('--checkpoint_path', type=str, required=True)
parser_at.add_argument('--audio_path', type=str, required=True)
parser_at.add_argument('--cuda', action='store_true', default=False)
parser_sed = subparsers.add_parser('sound_event_detection')
parser_sed.add_argument('--sample_rate', type=int, default=32000)
parser_sed.add_argument('--window_size', type=int, default=1024)
parser_sed.add_argument('--hop_size', type=int, default=320)
parser_sed.add_argument('--mel_bins', type=int, default=64)
parser_sed.add_argument('--fmin', type=int, default=50)
parser_sed.add_argument('--fmax', type=int, default=14000)
parser_sed.add_argument('--model_type', type=str, required=True)
parser_sed.add_argument('--checkpoint_path', type=str, required=True)
parser_sed.add_argument('--audio_path', type=str, required=True)
parser_sed.add_argument('--cuda', action='store_true', default=False)
args = parser.parse_args()
if args.mode == 'audio_tagging':
audio_tagging(args)
elif args.mode == 'sound_event_detection':
sound_event_detection(args)
else:
raise Exception('Error argument!') |