Programmer Guide/Command Reference/EVAL/wconvert: Difference between revisions

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{{DISPLAYTITLE:{{SUBPAGENAME}}}}
{{DISPLAYTITLE:{{SUBPAGENAME}}}}
Compute the normalized, dual and tight version of a window function.
Compute the normalized, dual and tight version of a window function. This function is used in the analysis- and synthesis-part of frame multiplier implementations (e.g.: the script application <code>scripts\mulac.sts</code>) algorithms to support perfect signal reconstruction.  


;Usage:  
;Usage:  
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:;<var>x</var>: a vector containing the window function to be converted
:;<var>x</var>: a vector containing the window function to be converted
:;<var>m</var>: the hopsize used for analysis and synthesis in samples
:;<var>m</var>: the hopsize used for analysis and synthesis in samples; 1 <= ''m'' <= <code>ncol(''x'')</code>
;Result: a vector with same length as ''x'' containing the converted window function
;Result: a vector with same length as ''x'' containing the converted window function


// normalizedWindow := WCONVERT( window , 0 ) (setting window to 0 dB at ft(w,0))
// dualWindow := WCONVERT( window , 1 , hopsize )
// tightWindow := WCONVERT( window , 2 , hopsize )


;See also: [[Programmer_Guide/Command_Reference/EVAL/fft|fft]], [[Programmer_Guide/Command_Reference/EVAL/window|window]]
;See also: [[Programmer_Guide/Command_Reference/EVAL/window|window]], [[Programmer_Guide/Command_Reference/EVAL/fft|fft]]


[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]
[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]

Revision as of 10:31, 7 April 2011

Compute the normalized, dual and tight version of a window function. This function is used in the analysis- and synthesis-part of frame multiplier implementations (e.g.: the script application scripts\mulac.sts) algorithms to support perfect signal reconstruction.

Usage
wconvert(x, 0) ... normalized window
wconvert(x, 1, m) ... dual window
wconvert(x, 2, m) ... tight window
x
a vector containing the window function to be converted
m
the hopsize used for analysis and synthesis in samples; 1 <= m <= ncol(x)
Result
a vector with same length as x containing the converted window function


See also
window, fft

<function list>

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