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Room size, absorption characteristics and attenuation in direct sound fields
Room attenuation in direct sound fields as function of room size
and room absorption characteristics are indicated in the diagram below:

The diagram above is based on a listener within 5 ft from the terminal.
Typical Rooms and their Absorption Characteristics
- Hard - bath rooms, large churches, gymnasiums, factories
- Average - private homes, concert halls, restaurants,
offices, conference rooms, hotel rooms, school rooms, hospitals,
libraries, churches, reception rooms
- Soft - radio and TV studios, theaters
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Acoustics
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