Pitch Analysis of Vocalists in a Barbershop Quartet Adam Malsack ECE 601: All of Signal Processing
Background Pitches Whole number ratios Equal vs. Just Temperament (Intonation) Piano Trombone How are pitches chosen? Fundamentals? Certain harmonics?
Goal of Signal Processing Collect data of each singer independently Close mic Isolation/bleed Perform pitch analysis on each singer Choose held chords FFT
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
Signal Processing FFT Record fundamentals Extrapolate harmonic series Hypothesize what is intended