Scaling the signal of wave

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Pat
Pat il 11 Set 2012
I have a code
[f,Fs] = wavread('wolf.wav');
sound(f, Fs);
N = length(f);
slength = N/Fs;
t = linspace(0, N/Fs, N);
plot(t, f);
now i have to decompose the signal by using dwt ,monolevel and scale the coefficients in the range[-(2^15-1),(2^15-1)]
please help

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