how to reconstract a signal which through filter bank(16 bands)

Hi,now i design filter bank with 16 bands.I use a music(15s) through it, but when i hear the filter result ,it sounds so rough.Later,i find i can use analysis filter with integrated filter,but i do not know how to design.thank you!

there are my code

function [b]=fdbp1(x,fp1,fp2,fsotp1,fstop2,fs)
% ues fdesign.bandpass to design bandpass filter bank
% y filter result;
% x signal;
% fp1 left passband fre;fp2 right passband fre; fstop1 left stopband fre;fstop2 right fre;rp,rs
rp=1;rs=40;
for i=1:length(fp1)
     H=fdesign.bandpass(fstop1(i),fp1(i),fp2(i),fstop2(i),rs,rp,rs,fs);
     Hd=design(H,'butter');
     y=filter(Hd,x);
     t=(0:length(x)-1)/fs;
     B{i}=y;
end

end

Answer 1

[Vishal Bhutani]

Based on my understanding you want to reconstruct the original signal by using analysis filter. The link attached below might be helpful for you, as it contains an example for " how to design perfect reconstruction using two-channel filter banks":

https://www.mathworks.com/help/dsp/examples/reconstruction-through-two-channel-filter-bank.html

Hope it helps.

[zhe wang]

OK，thank you.