关于Python进行语音转文本有许多库可以选择,下面将介绍其中的两个库——SpeechRecognition和pocketsphinx。其中的pocketsphinx是CMU Sphinx的轻量版,是一个C语言的语音解码器引擎,也是一个被广泛使用的语音识别引擎。SpeechRecognition则是一款基于Python的语音识别库,可以调用不同的语音识别API,其中就包括pocketsphinx。
安装pocketsphinx方法
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安装pocketsphinx库:
python
pip install pocketsphinx -
下载安装语音模型库:
语音模型库可以根据需要进行下载。但是建议先从源代码中下载模型库,这些模型库可以保证较高的准确度和速度。
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CMU Sphinx US English 语言模型库:
python
wget https://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/US%20English%20Generic%20Language%20Model/cmusphinx-5.2-en-us.lm.gz -
CMU Sphinx US English 语音模型库
python
wget https://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/US%20English%20Generic%20Acoustic%20Model/cmusphinx-5.2-en-us-ptm-5.2.tar.gz -
解压缩语言以及语音模型库
python
tar -xzvf cmusphinx-5.2-en-us.lm.gz
tar -xzvf cmusphinx-5.2-en-us-ptm-5.2.tar.gz -
将语言模型库和语音模型库移动到合适的目录
python
sudo mv cmusphinx-5.2-en-us.lm /usr/local/share/pocketsphinx/model/en-us/
sudo mv cmusphinx-5.2-en-us-ptm-5.2 /usr/local/share/pocketsphinx/model/en-us/
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使用pocketsphinx进行语音转文本
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导入相关库
python
import speech_recognition as sr
from os import path -
设置语音文件路径
python
AUDIO_FILE = path.join(path.dirname(path.realpath(__file__)), "audio.wav") -
初始化语音识别对象,将PCM表示的文件转成WAV格式,以适应听觉上的环境
python
r = sr.Recognizer()
with sr.AudioFile(AUDIO_FILE) as source:
audio = r.record(source) -
使用CMU Sphinx的PocketSphinx引擎进行语音识别
python
try:
output = r.recognize_sphinx(audio, language='en-US', show_all=True)
print(output)
except sr.UnknownValueError:
print("找不到任何结果")
except sr.RequestError as e:
print("请求错误: {}".format(e))
安装SpeechRecognition方法
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安装SpeechRecognition库:
python
pip install SpeechRecognition -
下载并安装所需的语音转换API模型
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百度语音识别SDK
需要申请百度API,获得相应的参数后就可以进行语音识别了。
```python
import speech_recognition as srr = sr.Recognizer()
with sr.Microphone() as source:
r.adjust_for_ambient_noise(source)
print("请说话")
audio = r.listen(source)baidu_key = "Your App ID"
baidu_secret = "Your App Key"
try:
text = r.recognize_baidu(audio, app_id=baidu_key, api_key=baidu_secret)
print("百度语音识别结果:", text)
except sr.UnknownValueError:
print("找不到任何结果")
except sr.RequestError as e:
print("请求错误: {}".format(e))
``` -
Google Speech Recognition API
Google的语音识别API只有英文,安装和使用式非常简单,只需在传入
sr.recognize_google()
函数中添加language参数即可。```python
import speech_recognition as srr = sr.Recognizer()
with sr.Microphone() as source:
r.adjust_for_ambient_noise(source)
print("请说话")
audio = r.listen(source)try:
text = r.recognize_google(audio, language='en-US')
print("Google语音识别结果:", text)
except sr.UnknownValueError:
print("找不到任何结果")
except sr.RequestError as e:
print("请求错误: {}".format(e))
```
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示例
示例1:读取语音文件,使用pocketsphinx进行语音转文本
import speech_recognition as sr
from os import path
AUDIO_FILE = path.join(path.dirname(path.realpath(__file__)), "test.wav")
r = sr.Recognizer()
with sr.AudioFile(AUDIO_FILE) as source:
audio = r.record(source)
try:
output = r.recognize_sphinx(audio)
print(output)
except sr.UnknownValueError:
print("找不到任何结果")
except sr.RequestError as e:
print("请求错误: {}".format(e))
示例2:使用麦克风,使用Google Speech Recognition API进行语音转文本
import speech_recognition as sr
r = sr.Recognizer()
with sr.Microphone() as source:
r.adjust_for_ambient_noise(source)
print("请说话")
audio = r.listen(source)
try:
text = r.recognize_google(audio, language='en-US')
print("Google语音识别结果:", text)
except sr.UnknownValueError:
print("找不到任何结果")
except sr.RequestError as e:
print("请求错误: {}".format(e))
希望以上介绍能够对你有所帮助,使用Python进行语音转换的方法还有很多,可以根据自己的需要来选择不同的库和API。
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