3M SE, DL user manual RT60, Curves, and STI-PA, Additional options

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CHAPTER

Additional options	6
Reverberation

RT60, Curves, and STI-PA

Additional options

In this chapter, it is important to note that these features are additional add-on options and may not be available on your SoundPro model unless you specifically purchased these features.

Please see 3M’s website 3m.com/detection for more information:

•Reverberation

•STI-PA

•Curves

Reverberation

Reverberation is the distribution of sound in an enclosed space after the sound is removed or decayed. How is reverberation, or reverb, created in enclosed spaces? A sound is generated in an enclosed structure with a combination of the direct sound source (which travels from the sound source to listener by the shortest path without interfering with room surfaces) and the reflected indirect sound source. The total sound source echoes and decays as the sound is absorbed by the materials in the room (i.e., walls, carpet, furniture, concrete, etc...) and air. This is noticeable when the sound source stops but the reflections continue, decreasing in amplitude, until they can no longer be heard.

Models SE and DL