[asterisk-bugs] [Asterisk 0012781]: Queue holdtime smoothing filter is not boxcar (FIR), but exponential average (IIR).

[noreply at bugs.digium.com]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=12781 
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Reported By:                davidw
Assigned To:                
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Project:                    Asterisk
Issue ID:                   12781
Category:                   Applications/app_queue
Reproducibility:            always
Severity:                   text
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.20.1 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             06-03-2008 13:01 CDT
Last Modified:              06-03-2008 13:01 CDT
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Summary:                    Queue holdtime smoothing filter is not boxcar (FIR),
but exponential average (IIR).
Description: 
The comment for recalc_holdtime says that it implements a recursive boxcar
algorithm.  Even with the "recursive" qualifier, boxcar averaging refers to
simple rolling average filters, which are finite impulse response ones. 
The filter that recalc_holdtime actually implements is an exponential
average, which is an infinite impulse response filter.


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Issue History 
Date Modified   Username       Field                    Change               
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06-03-08 13:01  davidw         Asterisk Version          => 1.4.20.1        
06-03-08 13:01  davidw         SVN Branch (only for SVN checkou => N/A          
  
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