Re: Robust method of fundamental frequency estimation

[Matt Flax <flatmax@xxxxxxxx>]

I guess this topic and thread is now starting to cross between :
a] Mathematical techniques of estimating fundamental frequency
b] Perception of fundamental frequency and salience
c] Psychoacoustic abstraction of experimental evidence for fundamental 
   frequency salience
d] Physiological mechanisms of hearing the fundamental frequency and 
   salience.

Locked away in the physical inner ear is the truly amazing property for 
the perception of a fundamental frequency ... even when it is not 
present !

I draw attention again to the afferent/efferent non-linear cross-over :
http://mffmpitch.sourceforge.net/
You will require www.octave.org to run it out of the box.

This previous model needs to be updated with a delay and filter between 
the periphery and the CNS, but that is not too difficult ... reviewed in 
a lumped model here :
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1417513
http://www.assta.org/sst/2004/proceedings/papers/sst2004-315.pdf

Salience and fundamental frequency generation must all be a part of the 
same circuit and machinery. Neither a mathematical ACF approach, nor a 
different psychoacoustical model will have the simplicity of a correct 
physiological model.

As my supervisor once said ... an accurate lumped model will describe at 
least 70% of the auditory features we perceive... in my opinion, I also 
agree ... and what a model it will be once we all create it !

Matt
-- 
http://www.flatmaxstudios.com/
http://www.flatmax.org

Public Projects :
http://sourceforge.net/search/?type_of_search=soft&words=mffm
http://www.psysound.org