Purchase Solution

Speech Scrambler, Descrambler, Balanced Modulator

Not what you're looking for?

Ask Custom Question

A speech scrambler transforms low frequency to high frequency components and vice versa so that a baseband signal of bandwidth B is transformed to another baseband signal of the same bandwidth and a components at the frequency f is transformed into a component at the frequency B-f, where B is the bandwidth of the signal. An example is shown in the following figure...

a) Give the block diagram of a linear system to accomplish this scrambling.
b) Give a block diagram to descramble the signal.

Please see attached for full question.

Purchase this Solution

Solution Summary

Speech scramblers, descrambler and balanced modulators are examined.

Solution Preview

Speech Scrambler

A possible speech scrambler circuit is diagrammed in Figure 1(see attached file). The input signal is a voice signal from the output of a microphone preamplifier. A band-pass filter limits the bandwidth of the signal. The output of the filter is applied to a balanced modulator ...

Purchase this Solution

Free BrainMass Quizzes
Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Basic Physics

This quiz will test your knowledge about basic Physics.

The Moon

Test your knowledge of moon phases and movement.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.