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Mac Magazin/MacEasy 21
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Mac Magazin and MacEasy Magazine CD - Issue 21.iso
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Wissenschaft & Technik
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MacStim_2.2.1
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Samples ƒ
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Timing Technique
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1995-12-19
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2KB
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44 lines
{ This script demonstrates an inconsistency in the timing...
{ The aim is to present a sound and a picture simultaneously for 6 sec epochs.
{ Instructions: Play this script as it is. Script 1 will play. Notice what happens at 60".
{ Then reverse the comments to play script 2. To do this, select the lines beginning with
{ "r" for random trial of script 2, eg by triple clicking and dragging, then use the Uncomment
{ menu item in the Control menu (shortcut command-]). To prevent playing the Script 1 lines,
{ select them , and then use the Comment menu item (or command-[) to avoid playing them.
{ Then run the script again.
{ Preferences: default & in Resources pane, set play sounds through check box.
{ Script 1: this one does not run true to the exact 60" cycle. Why?
{type num pre max tot rep stpEvt bg st bg-file st-file
r 2 0.000 0.100 1.000 60.000 m s p Moof Ball 11
r 1 0.000 0.000 4.900 0.000 n n n n n
r 2 0.000 0.100 1.000 0.000 m s p Blah Ball 12
r 1 0.000 0.000 4.900 0.000 n n n n n
r 2 0.000 0.100 1.000 0.000 m s p Moof Ball 13
r 1 0.000 0.000 4.900 0.000 n n n n n
r 2 0.000 0.100 1.000 0.000 m s p Blah Ball 14
r 1 0.000 0.000 4.900 0.000 n n n n n
{ Script 2: this one works. Can you see the difference?
{type num pre max tot rep stpEvt bg st bg-file st-file
{r 2 0.000 0.100 1.100 60.000 m s p Moof Ball 11
{r 1 0.000 0.000 4.900 0.000 n n n n n
{
{r 2 0.000 0.100 1.100 0.000 m s p Blah Ball 12
{r 1 0.000 0.000 4.900 0.000 n n n n n
{
{r 2 0.000 0.100 1.100 0.000 m s p Moof Ball 13
{r 1 0.000 0.000 4.900 0.000 n n n n n
{
{r 2 0.000 0.100 1.100 0.000 m s p Blah Ball 14
{r 1 0.000 0.000 4.900 0.000 n n n n n
{ Conclusion: the total interval is what has determined script 1's durations. Making the
{ max interval of 0.1 only cuts into the total time. In script 2, pre and max intervals
{ are specifically used making them more than 1 sec and both grouped trials therefore
{ do add to 6 as intended! Phew!