def __init__(self, in_dim, out_dim, args, mean_std=None):
super(Model, self).__init__()
##### required part, no need to change #####
# mean std of input and output
in_m, in_s, out_m, out_s = self.prepare_mean_std(in_dim,out_dim,\
args, mean_std)
self.input_mean = torch_nn.Parameter(in_m, requires_grad=False)
self.input_std = torch_nn.Parameter(in_s, requires_grad=False)
self.output_mean = torch_nn.Parameter(out_m, requires_grad=False)
self.output_std = torch_nn.Parameter(out_s, requires_grad=False)
# a flag for debugging (by default False)
#self.model_debug = False
#self.validation = False
#####
####
# on input waveform and output target
####
# Load protocol and prepare the target data for network training
# target data
protocol_file = prj_conf.optional_argument[0]
self.protocol_parser = protocol_parse(protocol_file)
# working sampling rate, torchaudio is used to change sampling rate
self.m_target_sr = 16000
####
# optional configs (not used)
####
# re-sampling (optional)
#self.m_resampler = torchaudio.transforms.Resample(
# prj_conf.wav_samp_rate, self.m_target_sr)
# vad (optional)
#self.m_vad = torchaudio.transforms.Vad(sample_rate = self.m_target_sr)
# flag for balanced class (temporary use)
#self.v_flag = 1
####
# front-end configuration
# multiple front-end configurations may be used
# by default, use a single front-end
####
# frame shift (number of points)
self.frame_hops = [160]
# frame length
self.frame_lens = [320]
# FFT length
self.fft_n = [512]
self.spec_with_delta = False
self.spec_fb_dim = 60
# window type
self.win = torch.hann_window
# floor in log-spectrum-amplitude calculating
self.amp_floor = 0.00001
# manual choose the first 600 frames in the data
self.v_truncate_lens = [10 * 16 * 750 // x for x in self.frame_hops]
# number of sub-models
self.v_submodels = len(self.frame_lens)
# dimension of embedding vectors
self.v_emd_dim = 64
# output class
self.v_out_class = 2
####
# create network
####
self.m_transform = []
self.m_output_act = []
self.m_frontend = []
self.m_angle = []
for idx, (trunc_len,
fft_n) in enumerate(zip(self.v_truncate_lens, self.fft_n)):
fft_n_bins = fft_n // 2 + 1
self.m_transform.append(
torch_nn.Sequential(
TrainableLinearFb(fft_n, self.m_target_sr,
self.spec_fb_dim),
torch_nn.Conv2d(1, 64, [5, 5], 1, padding=[2, 2]),
nii_nn.MaxFeatureMap2D(), torch.nn.MaxPool2d([2, 2],
[2, 2]),
torch_nn.Conv2d(32, 64, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 96, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(), torch.nn.MaxPool2d([2, 2],
[2, 2]),
torch_nn.BatchNorm2d(48, affine=False),
torch_nn.Conv2d(48, 96, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(48, affine=False),
torch_nn.Conv2d(48, 128, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(), torch.nn.MaxPool2d([2, 2],
[2, 2]),
torch_nn.Conv2d(64, 128, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(64, affine=False),
torch_nn.Conv2d(64, 64, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 64, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 64, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(), torch_nn.MaxPool2d([2, 2],
[2, 2])))
self.m_output_act.append(
torch_nn.Sequential(
torch_nn.Dropout(0.7),
torch_nn.Linear(
(trunc_len // 16) * (self.spec_fb_dim // 16) * 32,
512), nii_nn.MaxFeatureMap2D(),
torch_nn.Linear(256, self.v_emd_dim)))
self.m_frontend.append(
nii_front_end.Spectrogram(self.frame_lens[idx],
self.frame_hops[idx],
self.fft_n[idx], self.m_target_sr))
self.m_angle.append(
nii_amsoftmax.AMAngleLayer(self.v_emd_dim, self.v_out_class))
self.m_transform = torch_nn.ModuleList(self.m_transform)
self.m_output_act = torch_nn.ModuleList(self.m_output_act)
self.m_frontend = torch_nn.ModuleList(self.m_frontend)
self.m_angle = torch_nn.ModuleList(self.m_angle)
# output
# done
return
def __init__(self, in_dim, out_dim, args, mean_std=None):
super(Model, self).__init__()
##### required part, no need to change #####
# mean std of input and output
in_m, in_s, out_m, out_s = self.prepare_mean_std(in_dim,out_dim,\
args, mean_std)
self.input_mean = torch_nn.Parameter(in_m, requires_grad=False)
self.input_std = torch_nn.Parameter(in_s, requires_grad=False)
self.output_mean = torch_nn.Parameter(out_m, requires_grad=False)
self.output_std = torch_nn.Parameter(out_s, requires_grad=False)
# a flag for debugging (by default False)
#self.model_debug = False
#self.validation = False
#####
####
# on input waveform and output target
####
# Load protocol and prepare the target data for network training
protocol_file = prj_conf.optional_argument[0]
self.protocol_parser = protocol_parse(protocol_file)
# Working sampling rate
# torchaudio may be used to change sampling rate
self.m_target_sr = 16000
####
# optional configs (not used)
####
# re-sampling (optional)
#self.m_resampler = torchaudio.transforms.Resample(
# prj_conf.wav_samp_rate, self.m_target_sr)
# vad (optional)
#self.m_vad = torchaudio.transforms.Vad(sample_rate = self.m_target_sr)
# flag for balanced class (temporary use)
#self.v_flag = 1
####
# front-end configuration
# multiple front-end configurations may be used
# by default, use a single front-end
####
# frame shift (number of waveform points)
self.frame_hops = [160]
# frame length
self.frame_lens = [320]
# FFT length
self.fft_n = [512]
self.spec_with_delta = False
self.spec_fb_dim = 60
# window type
self.win = torch.hann_window
# floor in log-spectrum-amplitude calculating (not used)
self.amp_floor = 0.00001
# number of frames to be kept for each trial
# no truncation
self.v_truncate_lens = [None for x in self.frame_hops]
# number of sub-models (by default, a single model)
self.v_submodels = len(self.frame_lens)
# dimension of embedding vectors
# here, the embedding is just the activation before sigmoid()
self.v_emd_dim = 1
####
# create network
####
# 1st part of the classifier
self.m_transform = []
#
self.m_before_pooling = []
# 2nd part of the classifier
self.m_output_act = []
# front-end
self.m_frontend = []
# it can handle models with multiple front-end configuration
# by default, only a single front-end
for idx, (trunc_len, fft_n) in enumerate(zip(
self.v_truncate_lens, self.fft_n)):
fft_n_bins = fft_n // 2 + 1
self.m_transform.append(
torch_nn.Sequential(
TrainableLinearFb(fft_n,self.m_target_sr,self.spec_fb_dim),
torch_nn.Conv2d(1, 64, [5, 5], 1, padding=[2, 2]),
nii_nn.MaxFeatureMap2D(),
torch.nn.MaxPool2d([2, 2], [2, 2]),
torch_nn.Conv2d(32, 64, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 96, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(),
torch.nn.MaxPool2d([2, 2], [2, 2]),
torch_nn.BatchNorm2d(48, affine=False),
torch_nn.Conv2d(48, 96, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(48, affine=False),
torch_nn.Conv2d(48, 128, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(),
torch.nn.MaxPool2d([2, 2], [2, 2]),
torch_nn.Conv2d(64, 128, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(64, affine=False),
torch_nn.Conv2d(64, 64, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 64, [1, 1], 1, padding=[0, 0]),
nii_nn.MaxFeatureMap2D(),
torch_nn.BatchNorm2d(32, affine=False),
torch_nn.Conv2d(32, 64, [3, 3], 1, padding=[1, 1]),
nii_nn.MaxFeatureMap2D(),
torch_nn.MaxPool2d([2, 2], [2, 2]),
torch_nn.Dropout(0.7)
)
)
self.m_before_pooling.append(
torch_nn.Sequential(
nii_nn.BLSTMLayer((self.spec_fb_dim//16) * 32,
(self.spec_fb_dim//16) * 32),
nii_nn.BLSTMLayer((self.spec_fb_dim//16) * 32,
(self.spec_fb_dim//16) * 32)
)
)
self.m_output_act.append(
torch_nn.Linear((self.spec_fb_dim // 16) * 32, self.v_emd_dim)
)
self.m_frontend.append(
nii_front_end.Spectrogram(self.frame_lens[idx],
self.frame_hops[idx],
self.fft_n[idx],
self.m_target_sr)
)
self.m_frontend = torch_nn.ModuleList(self.m_frontend)
self.m_transform = torch_nn.ModuleList(self.m_transform)
self.m_output_act = torch_nn.ModuleList(self.m_output_act)
self.m_before_pooling = torch_nn.ModuleList(self.m_before_pooling)
# output
# done
return