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Pitch Analysis of Vocalists in a Barbershop Quartet Adam Malsack ECE 601: All of Signal Processing
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Background Pitches Whole number ratios Equal vs. Just Temperament (Intonation) Piano Trombone How are pitches chosen? Fundamentals? Certain harmonics?
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Goal of Signal Processing Collect data of each singer independently Close mic Isolation/bleed Perform pitch analysis on each singer Choose held chords FFT
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Modeling Data Collected Human (male) voice characteristics Relevant range 180Hz to 15kHz Harmonic in nature Fundamental range 180Hz to ~500Hz Noise characteristics Well below signal (< -60dB) White + 60Hz + odd harmonics
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Signal Processing FFT Record fundamentals Extrapolate harmonic series Hypothesize what is intended
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