#### Linear Phase Terms

The reason is called a*linear phase term*is that its phase is a linear function of frequency:

*slope*of the phase, viewed as a linear function of radian-frequency , is . In general, the

*time delay in samples*equals

*minus the slope of the linear phase term*. If we express the original spectrum in polar form as

*negatively sloped*linear phase to the original spectral phase. A negative time delay (waveform shift to the left) adds a

*positively sloped*linear phase to the original spectral phase. If we seem to be belaboring this relationship, it is because it is one of the most useful in practice.

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Linear Phase Signals

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Multiplication of Decimal Numbers