From 4152cf4615e234b9892703a8e088cdd51937fc13 Mon Sep 17 00:00:00 2001
From: haoneng.lhn <haoneng.lhn@alibaba-inc.com>
Date: 星期四, 07 十二月 2023 14:49:34 +0800
Subject: [PATCH] fix loss normalization for ddp training

---
 funasr/models/specaug/abs_specaug.py |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/funasr/models/specaug/abs_specaug.py b/funasr/models/specaug/abs_specaug.py
new file mode 100644
index 0000000..da6637e
--- /dev/null
+++ b/funasr/models/specaug/abs_specaug.py
@@ -0,0 +1,16 @@
+from typing import Optional
+from typing import Tuple
+
+import torch
+
+
+class AbsSpecAug(torch.nn.Module):
+    """Abstract class for the augmentation of spectrogram
+    The process-flow:
+    Frontend  -> SpecAug -> Normalization -> Encoder -> Decoder
+    """
+
+    def forward(
+        self, x: torch.Tensor, x_lengths: torch.Tensor = None
+    ) -> Tuple[torch.Tensor, Optional[torch.Tensor]]:
+        raise NotImplementedError

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