Tyco 579-769 specifications ITool Gymnasium Example

Applying the Methods, Continued

Example 3: Gymnasium

Gymnasiums are notoriously bad acoustic environments. Extremely high reverberation times can be expected because of the large room volume plus the hard walls, wood floors, and plaster or metal ceilings. Gymnasiums typically require surface treatments and sound absorbers and specialized speaker clusters and/or speakers with high Q values. In addition, the background noise is highly dependent on the use of the gym; if there is an audience the noise level can get very high.

Consider this gymnasium example with the following specifications:

•	Dimensions =	80’ L x 160’ W x 20’ H
•	Flooring =	Wood
•	Ceiling =	Gypsum
•	Walls =	Gypsum
•	Ambient Noise =	50 dB

This information is entered into the iTool:

Figure 6-9. iTool Gymnasium Example

The following basic results are attained from the iTool:

•The iTool reverberation time calculator estimates a very high T60 time of 5.2 seconds.

Note: Additional detailed modeling is most likely necessary due to the high T60 time.

•Using the iTool with an Edge-to-Edge pattern, the resulting total number of speakers is 8 tapped at 0.25 W, for a total of 2 W of audio power required.

Continued on next page

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