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5d9b308 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | # SPDX-License-Identifier: Apache-2.0
# Adapted from https://github.com/junjun3518/alias-free-torch under the Apache License 2.0
import torch.nn as nn
from .dac_alias_free_resample import UpSample1d, DownSample1d
class Activation1d(nn.Module):
def __init__(
self,
activation,
up_ratio: int = 2,
down_ratio: int = 2,
up_kernel_size: int = 12,
down_kernel_size: int = 12,
):
super().__init__()
self.up_ratio = up_ratio
self.down_ratio = down_ratio
self.act = activation
self.upsample = UpSample1d(up_ratio, up_kernel_size)
self.downsample = DownSample1d(down_ratio, down_kernel_size)
# x: [B,C,T]
def forward(self, x):
x = self.upsample(x)
x = self.act(x)
x = self.downsample(x)
return x
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