Python SpeechRecognition 没有响应

Question

如果我使用现场麦克风，SpeechRecognition 不会给出响应。

我已经使用 python3 -m pip install 成功安装了 SpeechRecognition 库和 PyAudio ... 我正在虚拟环境中使用 Raspberry Pi Zero 开发： Python 3.7.3 点 21.0.1

我正在使用 Adafruit I2S MEMS Microphone Breakout，并且能够使用以下方法成功录制：

arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav

当我将它保存在一个文件 (file.wav) 中并使用以下代码时，语音识别器可以工作：

import speech_recognition as sr

r = sr.Recognizer()
with sr.AudioFile('file.wav') as source:
        audio = r.record(source)

try:
        print("You said: " + r.recognize_google(audio))
except sr.UnknowValueError:
        print("Sorry, could not understand audio")
except sr.RequestError as e:
        print("Could not request results from Google Speech Recognition service; {0}".format(e))

但是当我想使用以下代码进行实时语音识别时：

import speech_recognition as sr

r = sr.Recognizer()
with sr.Microphone(1) as source:
        print("Say something!")
        audio = r.listen(source)

try:
        print("You said: " + r.recognize_google(audio))
except sr.UnknowValueError:
        print("Sorry, could not understand audio")
except sr.RequestError as e:
        print("Could not request results from Google Speech Recognition service; {0}".format(e))

它给出以下输出并一直说：“说点什么”而不显示任何文字记录：

ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_a52.c:823:(_snd_pcm_a52_open) a52 is only for playback
ALSA lib conf.c:5014:(snd_config_expand) Unknown parameters {AES0 0x6 AES1 0x82 AES2 0x0 AES3 0x2  CARD 0}
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM iec958:{AES0 0x6 AES1 0x82 AES2 0x0 AES3 0x2  CARD 0}
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Say something!

当我在一段时间后按 ^C 时，因为没有发生任何事情，会添加以下位：

^CTraceback (most recent call last):
  File "srwm.py", line 6, in <module>
    audio = r.listen(source)
  File "/home/pi/.virtualenvs/pythonyt/lib/python3.7/site-packages/speech_recognition/__init__.py", line 620, in listen
    buffer = source.stream.read(source.CHUNK)
  File "/home/pi/.virtualenvs/pythonyt/lib/python3.7/site-packages/speech_recognition/__init__.py", line 161, in read
    return self.pyaudio_stream.read(size, exception_on_overflow=False)
  File "/home/pi/.virtualenvs/pythonyt/lib/python3.7/site-packages/pyaudio.py", line 608, in read
    return pa.read_stream(self._stream, num_frames, exception_on_overflow)
KeyboardInterrupt

如果需要更多信息，请告诉我。 我希望有一个非常聪明的人可以帮助我，提前谢谢！

第一次回答后的新代码：

import speech_recognition as sr

r = sr.Recognizer()
with sr.Microphone(1) as source:
        print("Say something!")
        audio = r.listen(source)

data = ""
try:
    data = r.recognize_google(audio)
    print("You said: " + data)
except sr.UnknownValueError:
    print("Sorry, could not understand audio")
except sr.RequestError as e:
    print("Could not request results from Google Speech Recognition service; {0}".format(e))

return data 

给出返回在函数之外的错误。

Answer 1

我猜问题出在将语音翻译成文本的部分...试试这个：

data = ""
try:
    data = r.recognize_google(audio)
    print("You said: " + data)
except sr.UnknownValueError:
    print("Sorry, could not understand audio")
except sr.RequestError as e:
    print("Could not request results from Google Speech Recognition service; {0}".format(e))

return data

这是我猜想的全部代码：

import speech_recognition as sr

def Recognize():
    r = sr.Recognizer()
    with sr.Microphone(1) as source:
        print("Say something!")
        audio = r.listen(source)

    data = ""
    try:
        data = r.recognize_google(audio)
        print("You said: " + data)
    except Exception as e:
        print("Sorry, could not understand audio")
        print(e)

    return data 

if __name__=="__main__":
    data = Recognize().lower()
    print(data)