Scilab Wavelet Toolbox Function
Last update : Feburary 2006

idwt - one dimensional inverse fast discrete wavelet transform

Calling Sequence

a0=idwt(a,d,wavename,length,[extension_method])

Parameters

Description

This function performs one dimensional inverse fast discrete wavelet transform and provides a reconstructed version of signal. Extension method should be consistent with that of the decomposition procedure. Detailed algorithm is fully described in the userguide.

Examples


-->sig=rand(1,64);
-->[a,d]=dwt(sig,'db2','zpd');
-->a0=idwt(a,d,'db2',64,'zpd');
-->e=sum(abs(a0-sig))
 e  =
 
    3.469E-15  


  

See Also

dwt ,   dwt2 ,   idwt2