From a73123bcfc14370b74b17084bc124f00c48613e4 Mon Sep 17 00:00:00 2001
From: smohan-speech <smohan@mail.ustc.edu.cn>
Date: 星期六, 06 五月 2023 16:17:48 +0800
Subject: [PATCH] add speaker-attributed ASR task for alimeeting

---
 funasr/models/frontend/default.py |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/funasr/models/frontend/default.py b/funasr/models/frontend/default.py
index 9671fe9..2e1b0c4 100644
--- a/funasr/models/frontend/default.py
+++ b/funasr/models/frontend/default.py
@@ -38,6 +38,7 @@
             htk: bool = False,
             frontend_conf: Optional[dict] = get_default_kwargs(Frontend),
             apply_stft: bool = True,
+            use_channel: int = None,
     ):
         assert check_argument_types()
         super().__init__()
@@ -77,6 +78,7 @@
         )
         self.n_mels = n_mels
         self.frontend_type = "default"
+        self.use_channel = use_channel
 
     def output_size(self) -> int:
         return self.n_mels
@@ -100,9 +102,12 @@
         if input_stft.dim() == 4:
             # h: (B, T, C, F) -> h: (B, T, F)
             if self.training:
-                # Select 1ch randomly
-                ch = np.random.randint(input_stft.size(2))
-                input_stft = input_stft[:, :, ch, :]
+                if self.use_channel == None:
+                    input_stft = input_stft[:, :, 0, :]
+                else:
+                    # Select 1ch randomly
+                    ch = np.random.randint(input_stft.size(2))
+                    input_stft = input_stft[:, :, ch, :]
             else:
                 # Use the first channel
                 input_stft = input_stft[:, :, 0, :]

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