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The Significance of a Linear Phase

The Significance of a Linear Phase

Discover why the linear phase is preferred in most DSP algorithms.

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We know that a phase shift is directly proportional to a time shift in a sinusoid.

cos(ωt+ϕ)=cos[ω(t+ϕω)]=cos(ω(tτ))\begin{align*} \cos \left(\omega t +\phi\right)&=\cos \left[\omega \left(t +\frac{\phi}{\omega}\right)\right]\\ &=\cos \left(\omega \left(t -\tau\right)\right) \end{align*} ...