# Translations:Symmetric wavelets/6/en

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The sinc wavelet for width 2 is equal to unity at *t* = 0, is equal to zero for *t* = …, –3, –2, –1, 1, 2, 3, …, and falls off asymptotically as . Its spectrum is rectangular with unit bandwidth and unit height, and it is centered at *f* = 0. The left side of Figure 20 shows two examples of the sinc wavelet. The right side of Figure 20 shows the wavelets’ respective frequency spectra. We see that the frequency spectrum of a sinc wavelet is real valued, symmetric about the origin, and zero phase.