我正在尝试使用Python中的语音识别和Pyaudio将语音转换为文本。转换预录制的音频文件时一切正常，但当我使用麦克风（外部）录音时，它不监听，反而显示以下信息：

ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rearALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfeALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.sideALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel mapALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel mapALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel mapALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map

这是我的代码：

import speech_recognition as srr = sr.Recognizer()mic = sr.Microphone()with mic as source:  print('say somthing')  audio = r.listen(source) print(r.recognize_google(audio))

回答：

尝试使用以下代码块。在我的系统中，即使是实时输入也能完美运行。

import speech_recognition as srdef myCommand():    r = sr.Recognizer()    with sr.Microphone() as source:        audio = r.listen(source, phrase_time_limit = 5)      try:        command = r.recognize_google(audio).lower()        print("you said: " + command)            except sr.UnknownValueError:        print("Sorry, Cant understand, Please say again")        command = myCommand()    return command