A signal is represented by x(t) = 1 |t|

A signal is represented by
x(t) = 1 |t| < 1
0 |t| > 1

The Fourier transform of the convolved single y(t) = x(2t)*x(t/2) is

4	sin		ω		sin (2ω)
ω²			2

4	sin		ω
ω²			2

4	sin	sin (2ω)
ω²

4	sin ω
ω²