controlling volume levels

Author	Message
rburtonaus	rburtonaus posted 10 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 8, Visits: 23	I am trying to give subjects the opportunity to set the volume to a comfortable level at the start of each session. I have set volume as a value as follows: <values> /Vol=-5000 </values> and <sound TestSound> /items = ("TestSound.wav") /volume = (values.vol) </sound> I have tried a variety of ways of setting the variable using blocks and trials but nothing seems to work. Here is an example: <trial VolChange> /inputdevice = mouse /stimulustimes = [0 = VolumeUp, VolumeDown, Continue; 1000 = TestSound] /validresponse = (VolumeUp, VolumeDown, Continue) /correctresponse = (Continue) </trial> <block AdjustVol> /trials = [1-50 = noreplace(VolChange)] /branch = [if(trial.volchange.response==VolumeUp) values.vol+= 1000] /branch = [if(trial.volchange.response==VolumeDown) values.vol-= 1000] /branch = [if(block.adjustvol.correctstreak>0) block.600block] </block> Even the last branch (correct streak) doesn't work for me. I would very much appreciate advice. Tags branch volume
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rburtonaus - 10 Years Ago

There are various syntax errors in your code. Particularly missing...

Dave - 10 Years Ago

Thank you very much. I posted after a day of struggling. Its a great...

rburtonaus - 10 Years Ago

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