Pitch Analysis of Vocalists in a Barbershop Quartet Adam Malsack ECE 601: All of Signal Processing.

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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