[Bugs] #1911 HIGH: OLPC-Measure activity- Recording duration is not accurate

[Sugar Labs Bugs]

#1911: OLPC-Measure activity- Recording duration is not accurate
---------------------------+------------------------------------------------
    Reporter:  Ruwan F'do  |          Owner:  gpollice                   
        Type:  defect      |         Status:  assigned                   
    Priority:  High        |      Milestone:  Unspecified by Release Team
   Component:  Measure     |        Version:                             
    Severity:  Major       |       Keywords:                             
Distribution:  OLPC        |   Status_field:  Resolved                   
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Changes (by gpollice):

  * owner:  walter => gpollice
  * status:  new => assigned
  * status_field:  New => Resolved


Comment:

 This has been fixed. There are a couple of issues here. First, the
 assumption that selecting a time in the combo box means that Measure will
 sample for that period of time and stop is a bad assumption. Selecting a
 time actually means that a sample will be taken continually at the end of
 the duration, until the user clicks the stop recording button. However, if
 the Now is selected, it means take a single snapshot when the Record
 button is pressed.

 We changed the text on the combo box items to be more clear and added more
 descriptive tool tips to the record button. We also cleaned up the audio
 sampling toolbar.

 Finally, we noticed that the time was not correct, depending upon the
 processor so we added a timer thread to determine when to log the sample.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1911#comment:4>
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