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The article discusses the highlights of a presentation by Ken Platz and Lindsay Spanjer of Shure entitled "The Science of Microphones" at the meeting of the Pennsylvania State University Section of the Audio Engineering Society (AES) on October 4, 2009. Platz talked about the history of Shure, its progress and some of the newest additions to their line of microphones. The meeting concluded with a question-and-answer session about other types of microphones.

The article focuses on the discussion on switching amplifier technology given by Eli Hughes, candidate in the graduate program in acoustics at Pennsylvania State University (Penn State) in University Park, during the meeting of the Penn State Section of the Audio Engineering Society on September 1, 2009. The principles of the technology was also discussed at the meeting. The advantages and disadvantages of the different types of amplification were explained at the meeting.

The article offers information on a talk given by Tim Westergren, founder of Pandora Internet Radio, during a meeting of the Penn State Student Section of the Audio Engineering Society (AES) on April 8, 2009. Westergren spoke on the origins of Pandora, what Pandora is doing for the music industry, and its plans for the future. Westergren graduated from Stanford University and dabbled in several music professions before starting the company that evolved into Pandora Internet Radio.