Independent Variable

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5 Terms

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y(t) = x(at)

  • Time Scaling (Continuous-Time)

  • Scaling time by a factor ‘a’ produces it

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Time Compression

If a > 1, the signal is compressed in time.

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Time Expansion (Stretching)

If 0 < a < 1, the signal is expanded.

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y[n] = x[kn], k > 0

Time Scaling (Discrete-Time)

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Loss of Samples in Discrete-Time Scaling

If k > 1, some original of x[n] are lost due to compression.