using sox in python script

[symeboy]

Hi,

Ive got sox working through the command terminal
export AUDIODEV=hw:0,0
rec rectest.wav

how does this work as a python script? I have tried
import os
os.system("export AUDIODEV=hw:0,0")
os.system("rec rectest.wav")
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
Segmentation fault

Very basic question I guess, thanks in advance!

[kusti8]

Maybe add the environmental variable to the command?
AUDIODEV=hw:0,0 rec rectest.wav

[symeboy]

Bingo! thanks

import os
os.system("AUDIODRIVER=alsa AUDIODEV=hw:0,0 rec recordtest.wav")

[rpdom]

You can also use os.environ like this

Code: Select all

import os

os.environ["AUDIODRIVER"] = "alsa"
os.environ["AUDIODEV"] = "hw:0,0"
os.system("rec recordtest.wav")