• PTA, (Play The Air), is an artificial guitar that consists of a pair of gloves. One hand as multiple flex sensors on it used in different patterns to create notes and chords, while the other hand has a pressure sensor on it to simulate the guitarist strumming the guitar. When the "string" is plucked, an Arduino processor reads the note from the glove using the Karplus-Strong algorithm (an algorithm developed by a Stanford professor in the 1980s), and send instructions to the speaker to play a specific note. The algorithm uses bursts of white noise that are repeatedly filtered and played back. By creating delay and reading the frequency of that delay, we can control the frequency of the sound output. Thus, by using different fingerings that represent different frequencies, we can play a wide variety of notes, which can be strung together to sound like the playing of a guitar. The micro-controller takes the input and then constructs the sound as if an actual string were to be played, thus adding a more realistic sound to the guitar.