Chapter 7 Amplified Voice Systems

CHAPTER 7

AMPLIFIED VOICE SYSTEMS

LEARNING OBJECTIVES

Upon completion of this chapter, you will be able to do the following:

Explain the purpose of amplified voice systems installed on Navy ships.

Identify the various types of amplified voice systems.

Identify the various announcing system circuits by their designations.

Describe the types and characteristics of microphones and loudspeakers.

Describe the components, operation, and maintenance procedures of a central

amplifier system (one-way) and the additional sound equipment used with the

system.

Describe the components, operation, and maintenance procedures of a central

amplifier system (two-way) and the additional sound equipment used with the

system.

Describe the components, operation, and maintenance procedures of the

intercommunication systems and the additional sound equipment used with the

systems.

Briefly describe the integrated intercommunication system used on Navy

submarines.

Identify the types of public address sets and describe the components, operation,

and maintenance procedures of the public address sets.

INTRODUCTION

Several types of amplified voice systems are

installed in most ships. These types include the

If you should look for the source of a sound, you

following:

will find that something had been set in vibratory

motion. It may be that someone shouted or struck or

Central amplifier systems that provide one-way

dropped an object. In each case something vibrated and

communications

caused the sensation of sound. One sound that human

Central amplifier systems that provide two-way

beings produce is voice. Although air is the usual

communications

medium for carrying voice to your ears, any elastic

material in the form of a solid, liquid, or gas can serve

Intercommunication systems that provide

as well or better. Like any other sound, voice cannot

two-way communications between selected

travel in a vacuum.

stations

In today's Navy, amplified voice systems amplify

Integrated intercommunication systems that

and transmit the voice so it can reach and be heard by

provide both central amplifier and intercom-

the personnel aboard ship. With these systems, which

munication systems

are the heart of interior communications, the "word" is

Portable public address systems

passed quickly and clearly.

7-1