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Fix randn to rand

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This commit is contained in:
Daniel Povey 2022-10-23 17:19:19 +08:00
parent e586cc319c
commit d6aa386552
1 changed files with 6 additions and 4 deletions
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10
egs/librispeech/ASR/pruned_transducer_stateless7/scaling.py
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@ -915,13 +915,15 @@ class DoubleSwishFunction(torch.autograd.Function):
@staticmethod
def forward(ctx, x: Tensor) -> Tensor:
requires_grad = x.requires_grad
x = x.detach()
s = torch.sigmoid(x - 1.0)
y = x * s
# discretize s. This should be expectation-preserving if we just divide the
# result by 255.
s = ((s * 255) + torch.randn_like(s)).to(torch.uint8)
ctx.save_for_backward(s, y)
if requires_grad:
# discretize s. This should be expectation-preserving if we just divide the
# result by 255.
s = ((s * 255) + torch.rand_like(s)).to(torch.uint8)
ctx.save_for_backward(s, y)
return y
@staticmethod