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MidTerm_FA07

MidTerm_FA07 - E85.1801 Fundamentals of Music Technology...

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E85.1801 Fundamentals of Music Technology Fall 2007 Prof. Juan P. Bello Mid-term exam Full Name:____________________________ NetID:_________________________ INSTRUCTIONS: Please read carefully the instructions and all questions before answering. Please answer in short (1-2 paragraphs) essays, using equations and figures as necessary. Clearly enumerate your answers. Try not to use more than half a page per answer. Extra blank pages will be available upon request. There are five parts to this exam, with 2 questions for each part. This exam is worth 30% of the course marks (thus question points sum to 30). Please do not forget to put your name and NYU NetID in the space provided above. You will have approximately 1 hour and 40 minutes to complete this exam. PART I. Sound 1. In Fourier analysis: what are harmonics? What are inharmonic partials? Make a diagram of the spectrum of: (i) a sinusoid and (ii) white noise. (3 pts) 2. In a free field, what is the change of intensity (in dB) between a sound wave at 2 feet from its source and the same sound wave at 8 feet from its source? Use equations and brief explanations to support your answer. (3 pts)
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