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Uniform SNR - Objective

 

 

 

 

 

The purpose of this objective is:
to maintain a Uniform Signal to Noise Ratio throughout the Classroom.
 

 

Uniform SNR - Benefits
 
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You can Sit Anywhere in the Classroom and hear as well as
any other Student in the Classroom because the Audio Level is
the Same for all the Students in the Classroom.

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A Higher Signal to Noise Ratio that is Uniform throughout
the Classroom makes it easier to hear the Teacher for all the Students.
 

 

Technology Advancements in Speaker Design
make it possible to deliver a Uniform SNR with One Speaker

 
In the past either two or four speakers were used in the classroom to achieve a Uniform SNR throughout the classroom. The reason for this is that conventional speakers disperse sound like flashlights disperse light and a number of speakers were required to maintain a Uniform Signal to Noise Ratio throughout the Classroom. However with the technological advances in speaker technology, now it is possible to maintain a Uniform Signal to Noise Ratio throughout the classroom with One Wide Dispersion Speaker.
 

 

A Uniform SNR - Objective is Important but
it is no
t the Most Important Objective.
 
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A Higher Teacher Audio Level
that is the Same throughout the Classroom
may be easier to hear but not easier to understand.
(for example: the echo could be so high that nothing is clear)

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A Uniform Signal to Noise Ratio throughout the Classroom is not synonymous with High Clarity and Intelligibility Audio.
 

 

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Copyright 2001 & 2002 Alphanet Systems Inc.
Last modified: September 02, 2002