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play sound in preset interval while running other task?

Kim Lien — Fri, 09 Mar 2018 07:50:46 GMT

Dear All,

I would be very grateful for advice on how to implement a sound in a preset interval on top of another task.

I would like to modify the Point Subtraction Aggression Paradigm ( http://www.millisecond.com/download/library/psap/ ).
I would like to play the sound of a bell every 2 or 3 minutes during the task as a reminder of previously explained instructions.

Does anyone know how to implement the sound on top of the PSAP task?

Any help would be much appreciated.

Best,
Kim Lien

Kim Lien — Fri, 09 Mar 2018 07:50:46 GMT

[quote]

[b]Dave - Thursday, March 8, 2018[/b]

[quote]

[b]Kim Lien - Thursday, March 8, 2018[/b]

[/quote]

The most straightforward option would be to:
- Create an audio file (e.g. an MP3) with 2 or 3 minutes of silence and then bell sound at the end.
- Set up a <video> element, with its /loop attribute set to true.
- "Display" the audio during the PSAP blocks

<video remindersound>
/ items = ("2minutesilencethenbell.mp3")
/ loop = true
</video>

<block PSAP>
/ bgstim = (remindersound)
/onblockbegin = [values.PSAPstart = script.elapsedtime]
/onblockbegin = [values.PSAPblocks += 1]
/onblockbegin = [text.letterA.textcolor = black; text.letterB.textcolor = black; text.letterC.textcolor = black]
/onblockbegin = [if (values.restart_total == 1) values.totalpoints = 0]
/onblockbegin = [values.presscounts = 0; values.protection = 0; values.procovationtime = 0;
values.count_optionA = 0; values.count_optionB = 0; values.count_optionC = 0; values.protectiontime = 0;
values.poscolortime = 0; values.negcolortime = 0; values.rt = 0; values.count_provocations; values.lastPFIstealcount = 0]
/ trials = [1 = select]
/stop = [script.elapsedtime >= (values.PSAPstart + (values.blockduration * 60 * 1000))]
/branch = [if (values.number_blocks > values.PSAPblocks && values.restperiod_active == 1) block.rest]
/branch = [if (values.number_blocks > values.PSAPblocks && values.restperiod_active == 0) block.PSAP]
</block>

[/quote]

It works! Thank you so much for this super quick and elegant solution!

RE: play sound in preset interval while running other task?

Dave — Thu, 08 Mar 2018 10:07:43 GMT

[quote]

[b]Kim Lien - Thursday, March 8, 2018[/b]

[/quote]