From c2dee5e3c29eba79e591d9e9caebaef15ea4e56b Mon Sep 17 00:00:00 2001
From: hnluo <haoneng.lhn@alibaba-inc.com>
Date: 星期四, 29 六月 2023 11:09:28 +0800
Subject: [PATCH] Merge pull request #687 from alibaba-damo-academy/dev_lhn
---
funasr/models/decoder/sanm_decoder.py | 70 ++++++++++++++++++++++++++++------
1 files changed, 57 insertions(+), 13 deletions(-)
diff --git a/funasr/models/decoder/sanm_decoder.py b/funasr/models/decoder/sanm_decoder.py
index 0117430..ed920bf 100644
--- a/funasr/models/decoder/sanm_decoder.py
+++ b/funasr/models/decoder/sanm_decoder.py
@@ -94,6 +94,46 @@
if self.self_attn:
if self.normalize_before:
tgt = self.norm2(tgt)
+ x, _ = self.self_attn(tgt, tgt_mask)
+ x = residual + self.dropout(x)
+
+ if self.src_attn is not None:
+ residual = x
+ if self.normalize_before:
+ x = self.norm3(x)
+
+ x = residual + self.dropout(self.src_attn(x, memory, memory_mask))
+
+ return x, tgt_mask, memory, memory_mask, cache
+
+ def forward_chunk(self, tgt, tgt_mask, memory, memory_mask=None, cache=None):
+ """Compute decoded features.
+
+ Args:
+ tgt (torch.Tensor): Input tensor (#batch, maxlen_out, size).
+ tgt_mask (torch.Tensor): Mask for input tensor (#batch, maxlen_out).
+ memory (torch.Tensor): Encoded memory, float32 (#batch, maxlen_in, size).
+ memory_mask (torch.Tensor): Encoded memory mask (#batch, maxlen_in).
+ cache (List[torch.Tensor]): List of cached tensors.
+ Each tensor shape should be (#batch, maxlen_out - 1, size).
+
+ Returns:
+ torch.Tensor: Output tensor(#batch, maxlen_out, size).
+ torch.Tensor: Mask for output tensor (#batch, maxlen_out).
+ torch.Tensor: Encoded memory (#batch, maxlen_in, size).
+ torch.Tensor: Encoded memory mask (#batch, maxlen_in).
+
+ """
+ # tgt = self.dropout(tgt)
+ residual = tgt
+ if self.normalize_before:
+ tgt = self.norm1(tgt)
+ tgt = self.feed_forward(tgt)
+
+ x = tgt
+ if self.self_attn:
+ if self.normalize_before:
+ tgt = self.norm2(tgt)
if self.training:
cache = None
x, cache = self.self_attn(tgt, tgt_mask, cache=cache)
@@ -109,10 +149,9 @@
return x, tgt_mask, memory, memory_mask, cache
-
class FsmnDecoderSCAMAOpt(BaseTransformerDecoder):
"""
- author: Speech Lab, Alibaba Group, China
+ Author: Speech Lab of DAMO Academy, Alibaba Group
SCAMA: Streaming chunk-aware multihead attention for online end-to-end speech recognition
https://arxiv.org/abs/2006.01713
@@ -360,7 +399,7 @@
for i in range(self.att_layer_num):
decoder = self.decoders[i]
c = cache[i]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, tgt_mask, memory, memory_mask, cache=c
)
new_cache.append(c_ret)
@@ -370,13 +409,13 @@
j = i + self.att_layer_num
decoder = self.decoders2[i]
c = cache[j]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, tgt_mask, memory, memory_mask, cache=c
)
new_cache.append(c_ret)
for decoder in self.decoders3:
- x, tgt_mask, memory, memory_mask, _ = decoder(
+ x, tgt_mask, memory, memory_mask, _ = decoder.forward_chunk(
x, tgt_mask, memory, None, cache=None
)
@@ -773,7 +812,7 @@
class ParaformerSANMDecoder(BaseTransformerDecoder):
"""
- author: Speech Lab, Alibaba Group, China
+ Author: Speech Lab of DAMO Academy, Alibaba Group
Paraformer: Fast and Accurate Parallel Transformer for Non-autoregressive End-to-End Speech Recognition
https://arxiv.org/abs/2006.01713
"""
@@ -896,6 +935,7 @@
hlens: torch.Tensor,
ys_in_pad: torch.Tensor,
ys_in_lens: torch.Tensor,
+ chunk_mask: torch.Tensor = None,
) -> Tuple[torch.Tensor, torch.Tensor]:
"""Forward decoder.
@@ -916,9 +956,13 @@
"""
tgt = ys_in_pad
tgt_mask = myutils.sequence_mask(ys_in_lens, device=tgt.device)[:, :, None]
-
+
memory = hs_pad
memory_mask = myutils.sequence_mask(hlens, device=memory.device)[:, None, :]
+ if chunk_mask is not None:
+ memory_mask = memory_mask * chunk_mask
+ if tgt_mask.size(1) != memory_mask.size(1):
+ memory_mask = torch.cat((memory_mask, memory_mask[:, -2:-1, :]), dim=1)
x = tgt
x, tgt_mask, memory, memory_mask, _ = self.decoders(
@@ -980,7 +1024,7 @@
new_cache = cache["decode_fsmn"]
for i in range(self.att_layer_num):
decoder = self.decoders[i]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, None, memory, None, cache=new_cache[i]
)
new_cache[i] = c_ret
@@ -989,14 +1033,14 @@
for i in range(self.num_blocks - self.att_layer_num):
j = i + self.att_layer_num
decoder = self.decoders2[i]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, None, memory, None, cache=new_cache[j]
)
new_cache[j] = c_ret
for decoder in self.decoders3:
- x, tgt_mask, memory, memory_mask, _ = decoder(
+ x, tgt_mask, memory, memory_mask, _ = decoder.forward_chunk(
x, None, memory, None, cache=None
)
if self.normalize_before:
@@ -1037,7 +1081,7 @@
for i in range(self.att_layer_num):
decoder = self.decoders[i]
c = cache[i]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, tgt_mask, memory, None, cache=c
)
new_cache.append(c_ret)
@@ -1047,14 +1091,14 @@
j = i + self.att_layer_num
decoder = self.decoders2[i]
c = cache[j]
- x, tgt_mask, memory, memory_mask, c_ret = decoder(
+ x, tgt_mask, memory, memory_mask, c_ret = decoder.forward_chunk(
x, tgt_mask, memory, None, cache=c
)
new_cache.append(c_ret)
for decoder in self.decoders3:
- x, tgt_mask, memory, memory_mask, _ = decoder(
+ x, tgt_mask, memory, memory_mask, _ = decoder.forward_chunk(
x, tgt_mask, memory, None, cache=None
)
--
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