From 30d8d7a5d3ba4efd6e578db3bce321f7926ec516 Mon Sep 17 00:00:00 2001
From: Yabin Li <wucong.lyb@alibaba-inc.com>
Date: 星期一, 25 九月 2023 15:22:05 +0800
Subject: [PATCH] Update SDK_advanced_guide_online_zh.md

---
 funasr/models/frontend/abs_frontend.py |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/funasr/models/frontend/abs_frontend.py b/funasr/models/frontend/abs_frontend.py
new file mode 100644
index 0000000..6049a01
--- /dev/null
+++ b/funasr/models/frontend/abs_frontend.py
@@ -0,0 +1,17 @@
+from abc import ABC
+from abc import abstractmethod
+from typing import Tuple
+
+import torch
+
+
+class AbsFrontend(torch.nn.Module, ABC):
+    @abstractmethod
+    def output_size(self) -> int:
+        raise NotImplementedError
+
+    @abstractmethod
+    def forward(
+        self, input: torch.Tensor, input_lengths: torch.Tensor
+    ) -> Tuple[torch.Tensor, torch.Tensor]:
+        raise NotImplementedError
\ No newline at end of file

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