FL2VA/audio_vae/dac_alias_free_act.py
| 1 | # SPDX-License-Identifier: Apache-2.0 |
| 2 | # Adapted from https://github.com/junjun3518/alias-free-torch under the Apache License 2.0 |
| 3 | |
| 4 | import torch.nn as nn |
| 5 | from .dac_alias_free_resample import UpSample1d, DownSample1d |
| 6 | |
| 7 | |
| 8 | class Activation1d(nn.Module): |
| 9 | def __init__( |
| 10 | self, |
| 11 | activation, |
| 12 | up_ratio: int = 2, |
| 13 | down_ratio: int = 2, |
| 14 | up_kernel_size: int = 12, |
| 15 | down_kernel_size: int = 12, |
| 16 | ): |
| 17 | super().__init__() |
| 18 | self.up_ratio = up_ratio |
| 19 | self.down_ratio = down_ratio |
| 20 | self.act = activation |
| 21 | self.upsample = UpSample1d(up_ratio, up_kernel_size) |
| 22 | self.downsample = DownSample1d(down_ratio, down_kernel_size) |
| 23 | |
| 24 | # x: [B,C,T] |
| 25 | def forward(self, x): |
| 26 | x = self.upsample(x) |
| 27 | x = self.act(x) |
| 28 | x = self.downsample(x) |
| 29 | |
| 30 | return x |
| 31 | |