Merge pull request #1710 from Honei/deepspeech_server

[asr][websocket]fix the ws send bug, cache buffer,  text=doc

demos/speech_recognition/run.sh

@@ -7,4 +7,4 @@ paddlespeech asr --input ./zh.wav
 
 
 # asr + punc
-paddlespeech asr --input ./zh.wav | paddlespeech text --task punc
+paddlespeech asr --input ./zh.wav | paddlespeech text --task punc

paddlespeech/s2t/exps/u2/bin/test_wav.py

@@ -79,7 +79,6 @@ class U2Infer():
 
             ilen = paddle.to_tensor(feat.shape[0])
             xs = paddle.to_tensor(feat, dtype='float32').unsqueeze(axis=0)
-
             decode_config = self.config.decode
             result_transcripts = self.model.decode(
                 xs,
@@ -129,6 +128,7 @@ if __name__ == "__main__":
     args = parser.parse_args()
 
     config = CfgNode(new_allowed=True)
+
     if args.config:
         config.merge_from_file(args.config)
     if args.decode_cfg:

paddlespeech/server/conf/ws_application.yaml

@@ -4,7 +4,7 @@
 #                             SERVER SETTING                                    #
 #################################################################################
 host: 0.0.0.0
-port: 8091
+port: 8090
 
 # The task format in the engin_list is: <speech task>_<engine type>
 # task choices = ['asr_online', 'tts_online']

paddlespeech/server/tests/asr/online/websocket_client.py

@@ -15,8 +15,10 @@
 # -*- coding: UTF-8 -*-
 import argparse
 import asyncio
+import codecs
 import json
 import logging
+import os
 
 import numpy as np
 import soundfile
@@ -32,34 +34,30 @@ class ASRAudioHandler:
     def read_wave(self, wavfile_path: str):
         samples, sample_rate = soundfile.read(wavfile_path, dtype='int16')
         x_len = len(samples)
-        chunk_stride = 40 * 16  #40ms, sample_rate = 16kHz
+        # chunk_stride = 40 * 16  #40ms, sample_rate = 16kHz
         chunk_size = 80 * 16  #80ms, sample_rate = 16kHz
 
-        if (x_len - chunk_size) % chunk_stride != 0:
-            padding_len_x = chunk_stride - (x_len - chunk_size) % chunk_stride
+        if x_len % chunk_size != 0:
+            padding_len_x = chunk_size - x_len % chunk_size
         else:
             padding_len_x = 0
 
         padding = np.zeros((padding_len_x), dtype=samples.dtype)
         padded_x = np.concatenate([samples, padding], axis=0)
 
-        num_chunk = (x_len + padding_len_x - chunk_size) / chunk_stride + 1
+        assert (x_len + padding_len_x) % chunk_size == 0
+        num_chunk = (x_len + padding_len_x) / chunk_size
         num_chunk = int(num_chunk)
 
         for i in range(0, num_chunk):
-            start = i * chunk_stride
+            start = i * chunk_size
             end = start + chunk_size
             x_chunk = padded_x[start:end]
             yield x_chunk
 
     async def run(self, wavfile_path: str):
         logging.info("send a message to the server")
-        # 读取音频
-        # self.read_wave()
-        # 发送 websocket 的 handshake 协议头
         async with websockets.connect(self.url) as ws:
-            # server 端已经接收到 handshake 协议头
-            # 发送开始指令
             audio_info = json.dumps(
                 {
                     "name": "test.wav",
@@ -77,8 +75,10 @@ class ASRAudioHandler:
             for chunk_data in self.read_wave(wavfile_path):
                 await ws.send(chunk_data.tobytes())
                 msg = await ws.recv()
+                msg = json.loads(msg)
                 logging.info("receive msg={}".format(msg))
 
+            result = msg
             # finished 
             audio_info = json.dumps(
                 {
@@ -91,16 +91,35 @@ class ASRAudioHandler:
                 separators=(',', ': '))
             await ws.send(audio_info)
             msg = await ws.recv()
+            msg = json.loads(msg)
             logging.info("receive msg={}".format(msg))
 
+        return result
+
 
 def main(args):
     logging.basicConfig(level=logging.INFO)
     logging.info("asr websocket client start")
-    handler = ASRAudioHandler("127.0.0.1", 8091)
+    handler = ASRAudioHandler("127.0.0.1", 8090)
     loop = asyncio.get_event_loop()
-    loop.run_until_complete(handler.run(args.wavfile))
-    logging.info("asr websocket client finished")
+
+    # support to process single audio file
+    if args.wavfile and os.path.exists(args.wavfile):
+        logging.info(f"start to process the wavscp: {args.wavfile}")
+        result = loop.run_until_complete(handler.run(args.wavfile))
+        result = result["asr_results"]
+        logging.info(f"asr websocket client finished : {result}")
+
+    # support to process batch audios from wav.scp 
+    if args.wavscp and os.path.exists(args.wavscp):
+        logging.info(f"start to process the wavscp: {args.wavscp}")
+        with codecs.open(args.wavscp, 'r', encoding='utf-8') as f,\
+             codecs.open("result.txt", 'w', encoding='utf-8') as w:
+            for line in f:
+                utt_name, utt_path = line.strip().split()
+                result = loop.run_until_complete(handler.run(utt_path))
+                result = result["asr_results"]
+                w.write(f"{utt_name} {result}\n")
 
 
 if __name__ == "__main__":
@@ -110,6 +129,8 @@ if __name__ == "__main__":
         action="store",
         help="wav file path ",
         default="./16_audio.wav")
+    parser.add_argument(
+        "--wavscp", type=str, default=None, help="The batch audios dict text")
     args = parser.parse_args()
 
     main(args)

paddlespeech/server/utils/buffer.py

@@ -24,15 +24,38 @@ class Frame(object):
 
 class ChunkBuffer(object):
     def __init__(self,
-                 frame_duration_ms=80,
-                 shift_ms=40,
+                 window_n=7,
+                 shift_n=4,
+                 window_ms=20,
+                 shift_ms=10,
                  sample_rate=16000,
                  sample_width=2):
-        self.sample_rate = sample_rate
-        self.frame_duration_ms = frame_duration_ms
+        """audio sample data point buffer
+
+        Args:
+            window_n (int, optional): decode window frame length. Defaults to 7 frame.
+            shift_n (int, optional): decode shift frame length. Defaults to 4 frame.
+            window_ms (int, optional): frame length, ms. Defaults to 20 ms.
+            shift_ms (int, optional): shift length, ms. Defaults to 10 ms.
+            sample_rate (int, optional): audio sample rate. Defaults to 16000.
+            sample_width (int, optional): sample point bytes. Defaults to 2 bytes.
+        """
+        self.window_n = window_n
+        self.shift_n = shift_n
+        self.window_ms = window_ms
         self.shift_ms = shift_ms
-        self.remained_audio = b''
+        self.sample_rate = sample_rate
         self.sample_width = sample_width  # int16 = 2; float32 = 4
+        self.remained_audio = b''
+
+        self.window_sec = float((self.window_n - 1) * self.shift_ms +
+                                self.window_ms) / 1000.0
+        self.shift_sec = float(self.shift_n * self.shift_ms / 1000.0)
+
+        self.window_bytes = int(self.window_sec * self.sample_rate *
+                                self.sample_width)
+        self.shift_bytes = int(self.shift_sec * self.sample_rate *
+                               self.sample_width)
 
     def frame_generator(self, audio):
         """Generates audio frames from PCM audio data.
@@ -43,17 +66,13 @@ class ChunkBuffer(object):
         audio = self.remained_audio + audio
         self.remained_audio = b''
 
-        n = int(self.sample_rate * (self.frame_duration_ms / 1000.0) *
-                self.sample_width)
-        shift_n = int(self.sample_rate * (self.shift_ms / 1000.0) *
-                      self.sample_width)
         offset = 0
         timestamp = 0.0
-        duration = (float(n) / self.sample_rate) / self.sample_width
-        shift_duration = (float(shift_n) / self.sample_rate) / self.sample_width
-        while offset + n <= len(audio):
-            yield Frame(audio[offset:offset + n], timestamp, duration)
-            timestamp += shift_duration
-            offset += shift_n
+
+        while offset + self.window_bytes <= len(audio):
+            yield Frame(audio[offset:offset + self.window_bytes], timestamp,
+                        self.window_sec)
+            timestamp += self.shift_sec
+            offset += self.shift_bytes
 
         self.remained_audio += audio[offset:]

paddlespeech/server/ws/asr_socket.py

@@ -36,6 +36,10 @@ async def websocket_endpoint(websocket: WebSocket):
     # init buffer
     chunk_buffer_conf = asr_engine.config.chunk_buffer_conf
     chunk_buffer = ChunkBuffer(
+        window_n=7,
+        shift_n=4,
+        window_ms=20,
+        shift_ms=10,
         sample_rate=chunk_buffer_conf['sample_rate'],
         sample_width=chunk_buffer_conf['sample_width'])
     # init vad
@@ -75,11 +79,6 @@ async def websocket_endpoint(websocket: WebSocket):
             elif "bytes" in message:
                 message = message["bytes"]
 
-                # vad for input bytes audio
-                vad.add_audio(message)
-                message = b''.join(f for f in vad.vad_collector()
-                                   if f is not None)
-
                 engine_pool = get_engine_pool()
                 asr_engine = engine_pool['asr']
                 asr_results = ""

paddlespeech/vector/cluster/diarization.py

@@ -19,11 +19,11 @@ A few sklearn functions are modified in this script as per requirement.
 """
 import argparse
 import warnings
+from distutils.util import strtobool
 
 import numpy as np
 import scipy
 import sklearn
-from distutils.util import strtobool
 from scipy import sparse
 from scipy.sparse.csgraph import connected_components
 from scipy.sparse.csgraph import laplacian as csgraph_laplacian

utils/DER.py

@@ -26,9 +26,9 @@ import argparse
 import os
 import re
 import subprocess
+from distutils.util import strtobool
 
 import numpy as np
-from distutils.util import strtobool
 
 FILE_IDS = re.compile(r"(?<=Speaker Diarization for).+(?=\*\*\*)")
 SCORED_SPEAKER_TIME = re.compile(r"(?<=SCORED SPEAKER TIME =)[\d.]+")