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Merged
comfyanonymous merged 5 commits into from
Sep 13, 2025
Merged

Support wav2vec base models #9637

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b64004f
Support wav2vec base models
kijai Aug 30, 2025
66e1091
trim trailing whitespace
kijai Aug 30, 2025
874a067
Merge remote-tracking branch 'upstream/master'
kijai Aug 31, 2025
ca2e7f3
Merge remote-tracking branch 'upstream/master'
kijai Sep 4, 2025
bfa45fb
Do interpolation after
kijai Sep 4, 2025
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36 changes: 33 additions & 3 deletions comfy/audio_encoders/audio_encoders.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,13 @@ def __init__(self, config):
self.load_device = comfy.model_management.text_encoder_device()
offload_device = comfy.model_management.text_encoder_offload_device()
self.dtype = comfy.model_management.text_encoder_dtype(self.load_device)
self.model = Wav2Vec2Model(dtype=self.dtype, device=offload_device, operations=comfy.ops.manual_cast)
model_config = dict(config)
model_config.update({
"dtype": self.dtype,
"device": offload_device,
"operations": comfy.ops.manual_cast
})
self.model = Wav2Vec2Model(**model_config)
self.model.eval()
self.patcher = comfy.model_patcher.ModelPatcher(self.model, load_device=self.load_device, offload_device=offload_device)
self.model_sample_rate = 16000
Expand All @@ -25,16 +31,40 @@ def get_sd(self):
def encode_audio(self, audio, sample_rate):
comfy.model_management.load_model_gpu(self.patcher)
audio = torchaudio.functional.resample(audio, sample_rate, self.model_sample_rate)
out, all_layers = self.model(audio.to(self.load_device))
out, all_layers = self.model(audio.to(self.load_device), sr=self.model_sample_rate)
outputs = {}
outputs["encoded_audio"] = out
outputs["encoded_audio_all_layers"] = all_layers
return outputs


def load_audio_encoder_from_sd(sd, prefix=""):
audio_encoder = AudioEncoderModel(None)
sd = comfy.utils.state_dict_prefix_replace(sd, {"wav2vec2.": ""})
embed_dim = sd["encoder.layer_norm.bias"].shape[0]
if embed_dim == 1024:# large
config = {
"embed_dim": 1024,
"num_heads": 16,
"num_layers": 24,
"conv_norm": True,
"conv_bias": True,
"do_normalize": True,
"do_stable_layer_norm": True
}
elif embed_dim == 768: # base
config = {
"embed_dim": 768,
"num_heads": 12,
"num_layers": 12,
"conv_norm": False,
"conv_bias": False,
"do_normalize": False, # chinese-wav2vec2-base has this False
"do_stable_layer_norm": False
}
else:
raise RuntimeError("ERROR: audio encoder file is invalid or unsupported embed_dim: {}".format(embed_dim))

audio_encoder = AudioEncoderModel(config)
m, u = audio_encoder.load_sd(sd)
if len(m) > 0:
logging.warning("missing audio encoder: {}".format(m))
Expand Down
87 changes: 66 additions & 21 deletions comfy/audio_encoders/wav2vec2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,19 +13,49 @@ def forward(self, x):
x = self.conv(x)
return torch.nn.functional.gelu(self.layer_norm(x.transpose(-2, -1)).transpose(-2, -1))

class LayerGroupNormConv(nn.Module):
def __init__(self, in_channels, out_channels, kernel_size, stride, bias=False, dtype=None, device=None, operations=None):
super().__init__()
self.conv = operations.Conv1d(in_channels, out_channels, kernel_size=kernel_size, stride=stride, bias=bias, device=device, dtype=dtype)
self.layer_norm = operations.GroupNorm(num_groups=out_channels, num_channels=out_channels, affine=True, device=device, dtype=dtype)

def forward(self, x):
x = self.conv(x)
return torch.nn.functional.gelu(self.layer_norm(x))

class ConvNoNorm(nn.Module):
def __init__(self, in_channels, out_channels, kernel_size, stride, bias=False, dtype=None, device=None, operations=None):
super().__init__()
self.conv = operations.Conv1d(in_channels, out_channels, kernel_size=kernel_size, stride=stride, bias=bias, device=device, dtype=dtype)

def forward(self, x):
x = self.conv(x)
return torch.nn.functional.gelu(x)


class ConvFeatureEncoder(nn.Module):
def __init__(self, conv_dim, dtype=None, device=None, operations=None):
def __init__(self, conv_dim, conv_bias=False, conv_norm=True, dtype=None, device=None, operations=None):
super().__init__()
self.conv_layers = nn.ModuleList([
LayerNormConv(1, conv_dim, kernel_size=10, stride=5, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=2, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=2, stride=2, bias=True, device=device, dtype=dtype, operations=operations),
])
if conv_norm:
self.conv_layers = nn.ModuleList([
LayerNormConv(1, conv_dim, kernel_size=10, stride=5, bias=True, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=2, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
LayerNormConv(conv_dim, conv_dim, kernel_size=2, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
])
else:
self.conv_layers = nn.ModuleList([
LayerGroupNormConv(1, conv_dim, kernel_size=10, stride=5, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=3, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=2, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
ConvNoNorm(conv_dim, conv_dim, kernel_size=2, stride=2, bias=conv_bias, device=device, dtype=dtype, operations=operations),
])

def forward(self, x):
x = x.unsqueeze(1)
Expand Down Expand Up @@ -76,6 +106,7 @@ def __init__(
num_heads=12,
num_layers=12,
mlp_ratio=4.0,
do_stable_layer_norm=True,
dtype=None, device=None, operations=None
):
super().__init__()
Expand All @@ -86,20 +117,25 @@ def __init__(
embed_dim=embed_dim,
num_heads=num_heads,
mlp_ratio=mlp_ratio,
do_stable_layer_norm=do_stable_layer_norm,
device=device, dtype=dtype, operations=operations
)
for _ in range(num_layers)
])

self.layer_norm = operations.LayerNorm(embed_dim, eps=1e-05, device=device, dtype=dtype)
self.do_stable_layer_norm = do_stable_layer_norm

def forward(self, x, mask=None):
x = x + self.pos_conv_embed(x)
all_x = ()
if not self.do_stable_layer_norm:
x = self.layer_norm(x)
for layer in self.layers:
all_x += (x,)
x = layer(x, mask)
x = self.layer_norm(x)
if self.do_stable_layer_norm:
x = self.layer_norm(x)
all_x += (x,)
return x, all_x

Expand Down Expand Up @@ -145,6 +181,7 @@ def __init__(
embed_dim=768,
num_heads=12,
mlp_ratio=4.0,
do_stable_layer_norm=True,
dtype=None, device=None, operations=None
):
super().__init__()
Expand All @@ -154,15 +191,19 @@ def __init__(
self.layer_norm = operations.LayerNorm(embed_dim, device=device, dtype=dtype)
self.feed_forward = FeedForward(embed_dim, mlp_ratio, device=device, dtype=dtype, operations=operations)
self.final_layer_norm = operations.LayerNorm(embed_dim, device=device, dtype=dtype)
self.do_stable_layer_norm = do_stable_layer_norm

def forward(self, x, mask=None):
residual = x
x = self.layer_norm(x)
if self.do_stable_layer_norm:
x = self.layer_norm(x)
x = self.attention(x, mask=mask)
x = residual + x

x = x + self.feed_forward(self.final_layer_norm(x))
return x
if not self.do_stable_layer_norm:
x = self.layer_norm(x)
return self.final_layer_norm(x + self.feed_forward(x))
else:
return x + self.feed_forward(self.final_layer_norm(x))


class Wav2Vec2Model(nn.Module):
Expand All @@ -174,34 +215,38 @@ def __init__(
final_dim=256,
num_heads=16,
num_layers=24,
conv_norm=True,
conv_bias=True,
do_normalize=True,
do_stable_layer_norm=True,
dtype=None, device=None, operations=None
):
super().__init__()

conv_dim = 512
self.feature_extractor = ConvFeatureEncoder(conv_dim, device=device, dtype=dtype, operations=operations)
self.feature_extractor = ConvFeatureEncoder(conv_dim, conv_norm=conv_norm, conv_bias=conv_bias, device=device, dtype=dtype, operations=operations)
self.feature_projection = FeatureProjection(conv_dim, embed_dim, device=device, dtype=dtype, operations=operations)

self.masked_spec_embed = nn.Parameter(torch.empty(embed_dim, device=device, dtype=dtype))
self.do_normalize = do_normalize

self.encoder = TransformerEncoder(
embed_dim=embed_dim,
num_heads=num_heads,
num_layers=num_layers,
do_stable_layer_norm=do_stable_layer_norm,
device=device, dtype=dtype, operations=operations
)

def forward(self, x, mask_time_indices=None, return_dict=False):

def forward(self, x, sr=16000, mask_time_indices=None, return_dict=False):
x = torch.mean(x, dim=1)

x = (x - x.mean()) / torch.sqrt(x.var() + 1e-7)
if self.do_normalize:
x = (x - x.mean()) / torch.sqrt(x.var() + 1e-7)

features = self.feature_extractor(x)
features = self.feature_projection(features)

batch_size, seq_len, _ = features.shape

x, all_x = self.encoder(features)

return x, all_x
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