首先安装pyaudio

到官网下载pa_stable_v190600_20161030.tgz (←或者直接点击下载)

2, 下载之后解压进入文件夹

3, 在文件夹下打开命令行输入以下命令

conda create -n listen python=3.7.1

source activate listen

$ ./configure

$ make

$ sudo make install

$ sudo apt-get install libasound-dev portaudio19-dev libportaudio2 libportaudiocpp0

$ pip install pyaudio

我看了好多。。。。安装教程，都会报错，于是我一气之下。创建了一个虚拟环境，我就不信在干净的环境下，我装不成功。。结果被我装成功了哈哈哈。

结果安装成功了，也可以成功import

实现python实时监听麦克风

代码如下：

# -*- coding: utf-8 -*-

import pyaudio

import wave

import numpy as np

def Monitor():

CHUNK = 512

FORMAT = pyaudio.paInt16

CHANNELS = 1

RATE = 48000

RECORD_SECONDS = 5

WAVE_OUTPUT_FILENAME = "cache.wav"

p = pyaudio.PyAudio()

stream = p.open(format=FORMAT,

channels=CHANNELS,

rate=RATE,

input=True,

frames_per_buffer=CHUNK)

print("开始缓存录音")

frames = []

while (True):

print('begin ')

for i in range(0, 100):

data = stream.read(CHUNK)

frames.append(data)

audio_data = np.fromstring(data, dtype=np.short)

large_sample_count = np.sum( audio_data > 800 )

temp = np.max(audio_data)

if temp > 800 :

print("检测到信号")

print('当前阈值：',temp)

break

stream.stop_stream()

stream.close()

p.terminate()

wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')

wf.setnchannels(CHANNELS)

wf.setsampwidth(p.get_sample_size(FORMAT))

wf.setframerate(RATE)

wf.writeframes(b''.join(frames))

wf.close()

if __name__ == '__main__':

Monitor()

跑成功后是下面那样

$ python get_audio.py

ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear

ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe

ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side

ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map

ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map

ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map

ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map

开始缓存录音

begin