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
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