项目需求

  1. 在命令行窗口运行;
  2. 程序运行时,会让你输入一句英语,然后你需要对着麦克风读出这句英语;
  3. 程序会判断你读的对不对,如果不对会让你重读,直到读对为止;
  4. 使用百度云语音识别:https://ai.baidu.com/tech/spe...

Python编程知识点

  • while循环
  • 用户输入字符串
  • 字符串小写
  • 条件判断
  • 自定义函数
  • 异常处理
  • SpeechRecognition 模块 (安装: pip install SpeechRecognition)
  • pyaudio 模块 (安装: pip install pyaudio)
  • baidu-aip 模块(安装: pip install baidu-aip)

参考代码

import speech_recognition as sr
from aip import AipSpeech

# 请自己注册百度云语音识别:https://ai.baidu.com/tech/speech/asr
VOICE_APP_ID = 'YOUR_ASR_APP_ID'
VOICE_API_KEY = 'YOUR_ASR_APP_KEY'
VOICE_SECRET_KEY = 'YOUR_ASR_SECRET_KEY'
voice_client = AipSpeech(VOICE_APP_ID, VOICE_API_KEY, VOICE_SECRET_KEY)


# 百度云语音识别
def asr(audio_data):
    wav_data = audio_data.get_wav_data(
        convert_rate=16000,
        convert_width=2
    )
    res = voice_client.asr(wav_data, 'wav', 16000, {
        'dev_pid': 1737,
    })
    if res['err_no'] == 0:
        return ''.join(res['result'])
    else:
        return ''


def recognize_speech_from_mic(recognizer, microphone):
    '''
    麦克风录音并转文字 `microphone`.
    :param recognizer: 语音识别器
    :param microphone: 麦克风
    :return: `None` 如果识别失败返回None,否则返回语音文字
    '''
    print('开始朗读')
    # 录音并去除噪音
    with microphone as source:
        recognizer.adjust_for_ambient_noise(source)
        audio = recognizer.listen(source)

    # 使用百度云语音识别
    try:
        text = asr(audio)
    except Exception as e:
        print(e)
        text = None

    return text


if __name__ == '__main__':
    # 输入
    text = input('请输入一句英语: ').strip()

    # 创建语音识别器和麦克风
    recognizer = sr.Recognizer()
    microphone = sr.Microphone()

    # 录音并获取文字
    speech_text = recognize_speech_from_mic(recognizer, microphone)

    while speech_text != None and text.lower() != speech_text.lower():
        print('{} ×'.format(speech_text))
        speech_text = recognize_speech_from_mic(recognizer, microphone)

    if speech_text:
        print('{} {}'.format(speech_text, '✓'))
    else:
        print('语音识别服务暂不可用,请稍后再试。')

运行测试

  • 使用 pip install requirements.txt 安装模块: pyaudioSpeechRecognitionbaidu-aip
  • 运行
python 5.py

image.png


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