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CHAPTER 3
CONFIGURING THE PRODUCT
Configuring the SMART product for the best
audio performance
Consider these factors as you configure a SMART product for the best audio performance:
Room acoustics
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System gain
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Gain staging
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Ground loops
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Acoustic Echo Cancellation (AEC)
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Equipment placement
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Room acoustics
The importance of room acoustics varies depending on the room's size and intended use. If you
plan to enable voice conferencing in a large room, such as a board room or a lecture space, room
acoustics are more important than they would be in a small classroom or meeting space where
voice conferencing is not likely to be used often. Sound absorption can be required in large, open
areas in which sound can echo freely.
Use this simple test to check the room's acoustics: Stand in different parts of the room and count to
ten loudly. If you hear anything other than your own voice (such as a rattle, buzzing from elsewhere
in the room or echoes), the room may require some modifications to improve the acoustics.
A number of features in a room can affect its acoustics:
Feature
Hard surfaces
Flooring
Ceiling
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Hard surfaces in a room (such as brick, cement or glass) can cause
sound to echo and distort, which can cause muffled or echoing
audio during a voice conference.
Tile, hardwood and laminate flooring are hard surfaces that can
cause echoes and distortion. Carpeted floors offer more
absorption of unwanted sounds.
A dropped ceiling with regular ceiling tiles can greatly change the
acoustics of a room. Alternatively, a high, open or cavernous ceiling
can also affect audio quality.
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