Plot the ratio of the frequency responses (in decibels) and phase versus for the data holds of Problems 3.7-8 and 3.7-9. Note the effect on phase of making the data hold realizable.

Problems 3.7-8

A polygonal data hold is a device that reconstructs the sampled signal by the straight-line approximation shown in Fig. P3.7-8. Show that the transfer function of this data hold is

Problems 3.7-9

A data hold is to be constructed that reconstructs the sampled signal by the straight-line approximation shown in Fig. P3.7-9. Note that this device is a polygonal data hold with a delay of T seconds. Derive the transfer function for this data hold. Is this data hold physically realizable?

Transcribed Image Text:

0 Input to sampler T 2T 3T 47 Data-hold. output 5T