Presenting pairs of auditory stimuli - second stimulus not appearing

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1

Hello everyone,

I am trying to present a pair of beep sounds with an ISI of 1 second between them. The first beep appears every 6-10 seconds. How can I make the second beep come up 1 second after the first one? I’ve tried so many things but haven’t been able to. I am attaching code below which excludes my failed attempts to present the 2nd stimulus.

#loads the sound file and plays sound for 0.1 seconds
tactors1 = sound.Sound('test_100_200Hz.wav', name='$tactors1', stereo = True, secs = 0.1)
tactors1.setVolume(1)
tactors1.playing = False
tactors1.waiting = False


tactors2 = sound.Sound('test_100_200Hz.wav', name='$tactors2', stereo = True, secs = 0.1)
tactors2.setVolume(1)
tactors2.playing = False
tactors2.waiting = False

tactors1Onsets=[]
tactors1ISIs=[]

tactors2Onsets=[]
tactors2ISIs=[]


# we want to present the tone every
# 6 - 10 seconds for the duration of the trial
# if the sound is not currently playing
if not tactors1.playing and not tactors1.waiting:
    # pick how long we will wait for
    tactors1ISI = randint(6, 10)
    print('tactorISI', tactors1ISI)
    tactors1ISIs.append(tactors1ISI)
    tactors1Onset = t +tactors1ISI
    #we are waiting for the sound to play
    tactors1.waiting = True
elif not tactors1.playing and tactors1.waiting:
    if t >= tactors1Onset:
        print('playing')
        tactors1.play()
        tactors1Onsets.append(t)
        tactors1.playing = True
        tactors1.waiting = False
                
elif tactors1.playing:
    if t >= tactors1Onset + tactors1.secs:
        tactors1.stop()
        tactors1.playing = False

How can i initiate the second beep (tactors2) 1 second after the tactors1 finishes?

2

Would greatly appreciate any help with this…

3

bump!

4

Hello! Couple of things:

  1. Is this following on from this study?
  2. Is there a reason you cannot use a single sound file that contains both tones?
  3. If you know the onset and duration of the sound the following should do the trick:

Begin Routine:

tone.playing = False
interval = 1#desired interval in seconds

if t >= toneOffset + interval and not tone.playing:# where offset if your known offset time and t is the ongoing time in this routine
    tone.playing = True
    tone.play()

That looks pretty similar to what you have tried though? Perhaps you could please share the file you are working ok?

Thanks!
Becca

5

Hello Becca,

  1. Yes, but the experiment direction has completely changed!

  2. I can’t do because this sound turns on this tactor device that we have that creates a vibration

I JUST managed to get the second beep to work with the following code.

# we want to present the tone every
# 6 - 10 seconds for the duration of the trial
# if the sound is not currently playing
if not tactors1.playing and not tactors1.waiting:
    # pick how long we will wait for
    tactors1ISI = randint(6, 10)
    print('tactorISI', tactors1ISI)
    tactors1ISIs.append(tactors1ISI)
    tactors1Onset = t +tactors1ISI
    #we are waiting for the sound to play
    tactors1.waiting = True
elif not tactors1.playing and tactors1.waiting:
    if t >= tactors1Onset:
        print('playing 1st tactor')
        first_tactor_played = False
        tactors1.play()
        tactors1Onsets.append(t)
        tactors1.playing = True
        tactors1.waiting = False
        tactor1_on_times +1
        first_tactor_start_time = core.getTime() # Gets a timestamp of the start of the first vibration       
        first_tactor_played = True
elif tactors1.playing:
    if t >= tactors1Onset + tactors1.secs:
        tactors1.stop()
        tactors1.playing = False
        first_tactor_played = True
        first_tactor_stop_time = core.getTime()

#2nd vibration

if not tactors2.playing and not tactors2.waiting:
    if first_tactor_played == True:
        # pick how long we will wait for
        tactors2ISI = 1
        print('tactor2ISI', tactors2ISI)
        tactors2ISIs.append(tactors2ISI)
        tactors2Onset = t +tactors2ISI
        #we are waiting for the sound to play
        tactors2.waiting = True
elif not tactors2.playing and tactors2.waiting:
    if first_tactor_played == True:
        if t >= tactors2Onset:
            print('playing 2nd tactor')
            tactors2.play()
            tactors2Onsets.append(t)
            tactors2.playing = True
            tactors2.waiting = False
            tactor2_on_times +1
        #first_tactor_start_time = core.getTime() # Gets a timestamp of the start of the first vibration
                
elif tactors2.playing:
    if t >= tactors2Onset + tactors2.secs:
        if first_tactor_played == True:
            tactors2.stop()
            tactors2.playing = False
            first_tactor_played = False
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