Given-New Principle. In each sentence, identify and label the given/topical information, the main verb and new information by dragging and dropping the labels above into the text below.

Acoustic filters

1Acoustic filters, or mufflers, are used in a number of applications requiring the suppression or attenuation of sound. 2Although the idea might not be familiar to many people, acoustic mufflers make everyday life much more pleasant. 3Many common appliances, such as refrigerators and air conditioners, use acoustic mufflers to produce a minimal working noise. 4The application of acoustic mufflers is mostly directed to machine components or areas where there is a large amount of radiated sound, such as high pressure exhaust pipes, gas turbines, and rotary pumps.

This text uses material from the Wikibook Acoustics, chapter "Acoustics/Filter Design and Implementation", which is released under the Creative Commons Attribution-Share-Alike License 3.0.

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