FIGURE 2-1 Typical digital signal processing system.

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Nov 24, 2013 (3 years and 8 months ago)

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FIGURE 2
-
2

Analog signal.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
3

Sample
-
and
-
hold signal (shown with analog signal).

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
4

Digital signal (shown with sample
-
and
-
hold signal).

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
5

Undersampled analog signals.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
6

Aliasing in the time domain with 40 kHz sampling (adapted from Pohlmann, 1994).

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
10

Sine wave sampled at Nyquist rate.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
7

Antialiasing Filter.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
7

Antialiasing Filter.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
7

Antialiasing Filter.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
15

Quantization of unipolar data (maximum error = full step).

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
16

Quantization of unipolar data (maximum error = half step).

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
19

Analog
-
to
-
digital conversion.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
21

Three
-
bit A/D conversion.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
23

Digital
-
to
-
analog conversion.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

FIGURE 2
-
25

Three
-
Bit D/A conversion.

Joyce Van de Vegte

Fundamentals of Digital Signal Processing

Copyright ©2002 by Pearson Education, Inc.

Upper Saddle River, New Jersey 07458

All rights reserved.

D/A: the easier part


Inexpensive


Fast


Often incorporated into A/Ds


Eg.’s

A/D types