用python进行声音生成/合成吗? [英] Sound generation / synthesis with python?

问题描述

是否有可能让python产生像正弦波这样的简单声音?

Is it possible to get python to generate a simple sound like a sine wave?

是否有可用的模块?如果没有，您将如何创建自己的?

Is there a module available for this? If not, how would you go about creating your own?

此外，您是否需要某种主机环境才能运行python才能播放声音，还是仅通过从终端拨打电话即可实现?

Also, would you need some kind of host environment for python to run in in order to play sound, or can it be achieved just from making calls from the terminal?

如果答案取决于操作系统，则说明我使用的是Mac.

If the answer is OS-dependent, I'm using a mac.

推荐答案

我一直在寻找相同的东西，最后，我编写了这段运行良好的代码.

I was looking for the same thing, In the end, I wrote this code which is working fine.

import math        #import needed modules
import pyaudio     #sudo apt-get install python-pyaudio

PyAudio = pyaudio.PyAudio     #initialize pyaudio

#See https://en.wikipedia.org/wiki/Bit_rate#Audio
BITRATE = 16000     #number of frames per second/frameset.      

FREQUENCY = 500     #Hz, waves per second, 261.63=C4-note.
LENGTH = 1     #seconds to play sound

if FREQUENCY > BITRATE:
    BITRATE = FREQUENCY+100

NUMBEROFFRAMES = int(BITRATE * LENGTH)
RESTFRAMES = NUMBEROFFRAMES % BITRATE
WAVEDATA = ''    

#generating wawes
for x in xrange(NUMBEROFFRAMES):
 WAVEDATA = WAVEDATA+chr(int(math.sin(x/((BITRATE/FREQUENCY)/math.pi))*127+128))    

for x in xrange(RESTFRAMES): 
 WAVEDATA = WAVEDATA+chr(128)

p = PyAudio()
stream = p.open(format = p.get_format_from_width(1), 
                channels = 1, 
                rate = BITRATE, 
                output = True)

stream.write(WAVEDATA)
stream.stop_stream()
stream.close()
p.terminate()

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