Centos7下安装pyaudio实现声音录制

前置

(1) centos7环境下，运行yum -y install portaudio portaudio-devel进行环境准备

否则会产生如下错误信息：src/_portaudiomodule.c:29:23: fatal error: portaudio.h: No such file or directory

(2) 安装pyaudio：pip3 install pyaudio

错误信息

gcc -pthread -shared -Wl,-z,relro -g build/temp.linux-x86_64-3.6/src/_portaudiomodule.o -L/usr/lib64 -lportaudio -lpython3.6m -o build/lib.linux-x86_64-3.6/_portaudio.cpython-36m-x86_64-linux-gnu.so

    /bin/ld: cannot find -lpython3.6m

解决：ln -s /usr/lib64/libpython3.6m.so.1.0 /usr/lib64/libpython3.6m.so

错误信息

src/_portaudiomodule.c:28:20: fatal error: Python.h: No such file or directory

解决：首先通过find /usr -name Python.h找到Python.h所在的目录，由于安装包中指定的python3.6版本，本机未安装，故通过软连接实现：ln -s /usr/local/include/python3.7m/ /usr/include/python3.6m

示例DEMO

import pyaudio

import wave

import sys

CHUNK = 1024

if len(sys.argv) < 2:

    print("Plays a wave file.\n\nUsage: %s filename.wav" % sys.argv[0])

    sys.exit(-1)

wf = wave.open(sys.argv[1], 'rb')

p = pyaudio.PyAudio()

stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),

                channels=wf.getnchannels(),

                rate=wf.getframerate(),

                output=True)

data = wf.readframes(CHUNK)

while data != '':

    stream.write(data)

    data = wf.readframes(CHUNK)

stream.stop_stream()

stream.close()

p.terminate()

参考链接