[visionegg] Re: sound and visionegg (e.g. portaudio): demo code available?

  • From: Christophe Pallier <pallier@xxxxxxxxxxxxx>
  • To: visionegg@xxxxxxxxxxxxx
  • Date: Wed, 12 Nov 2003 15:20:13 +0100

Hello Christoph,

Andrew, (or anybody else): do you have some simple visionegg code
available, which you could send me?


Here is a very simple code using only pygame. The filenames are stored in the "stims" variable, but they could be read from a text file.
This script does not record any response from the subject.


#!/usr/bin/env python

"""playing a list of sound files at regulat intervals"""

import os.path
import pygame.mixer, pygame.time
mixer = pygame.mixer
time = pygame.time

#choose a desired audio format
mixer.init(16000)

stimpath="/home/pallier/sample_sounds/"

stims="""
tone0064.wav
tone0128.wav
tone0256.wav
tone0512.wav
tone1024.wav
tone2048.wav
tone4096.wav
tone8192.wav
"""

def play(file):
       file = os.path.join(stimpath,file);
       sound=mixer.Sound(file)
       channel=sound.play()
       while channel.get_busy():
               time.wait(10)

start=time.get_ticks()
SOA=2000
n=0

for i in stims.split():
       n=n+1
       while time.get_ticks()-start > n*SOA:
               time.delay(10)
       print "playing %s" % i
       if i:
               play(i)


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