Why Is Pitch Tracking So Hard?

Date: 
Fri, 11/06/2009 - 2:15pm
Location: 
CCRMA Classroom, The Knoll 217
Event Type: 
DSP Seminar

For this week's DSP Seminar, visiting researcher Chuck Cooper will present a seminar on pitch tracking (abstract follows).  We will meet in the classroom at 2:15 PM.

Why Is Pitch Tracking So Hard?
Chuck Cooper

This DSP seminar will examine a variety of algorithms for "pitch-detection" (fundamental frequency estimation and tracking), including time-domain methods such as autocorrelation and AMDF, as well as frequency-domain techniques.  We’ll discuss why some algorithms work well on particular kinds of signals---speech, singing voice, or monophonic instruments---but fail miserably with other inputs.   We’ll consider issues of latency and computational complexity for real-time applications, and, for off-line analysis, explore high-accuracy techniques.  Some of the methods will be related to what’s known about the human auditory system and our own mechanisms for pitch perception.
 

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