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Portable High-Definition Audio Spectrum Analyzer, Alex Zahn, Jamie Corr
Portable High-Definition Audio Spectrum Analyzer, Alex Zahn, Jamie Corr
Electrical Engineering
The Portable High-definition Audio Spectrum Analyzer (PHASA) allows the user to visualize the audio frequency spectrum of an incoming line-level stereo audio signal. Upon pressing the touch screen spectrum graph, the PHASA displays the corresponding frequency and volume levels as well as crosshairs at the touched location. The PHASA features multiple left/right channel display modes— Left channel only, right channel only, both channels simultaneously, and the average between the two channels. The PHASA features multiple resolution display modes (standard-resolution and high-resolution) and multiple dynamics display modes (standard dynamics, averaging, and peak/hold). The PHASA accepts input audio via a 1/4" TRS …
Apple Ipad Cart, Gregory Keith Bartley Jr., Brandon J. Horvath
Apple Ipad Cart, Gregory Keith Bartley Jr., Brandon J. Horvath
Gregory Keith Bartley Jr.
Utilizing a Pelican Accessories Case, I was able to construct a power efficient, mobile iPad charging station cart capable of safely charging and transporting up to 10 iPads and 10 iPad Keyboards with additional compartments to accommodate any additional cords and/or devices. The introduction of WiFi Sync in Apple's iOS 5 Update allowed me to more efficiently compartmentalize any cords from being exposed. Compared to commercially-available iPad Sync and Cart Charging Systems which charge $1000+, this unit cost me around $100. It also uses far less power, due to no longer needing a powered USB hub network in order to …