Re: f0 frequency difference limen

[Matt Flax <flatmax@xxxxxxxx>]

Hi Andrew,

I was just chatting with some people the other day about frequency limen 
...

Are you talking about harmonic instruments ?
Then you can use combinations of even & odd multiples of f0. If you want 
to know their nature, I guess it would be dependent on the type of your 
instrument and how loud it is being played.

If you are talking about the frequency difference limen associated with 
the active processes of hearing ... I am aware of more basic - yet 
revealing phenomena - to do with the live Cochlea, SOAEs and (in my 
opinion) the SOC.

Here is a recent reference and my opinion for you ...

An investigation into the frequency difference limens D_L near SOAE 
frequencies suggests that they are reduced around the SOAE frequency 
[norena:2002]. They were found to be reduced whether the stimulus was 
ipsilaterally or contralaterally presented. Norena et al. argue that the 
effect on D_L with contralateral presentation suggests a central role 
for the frequency processing and SOAE generation mechanism of the 
peripheral hearing circuit.

I do have more information on the harmonics (and non harmonics) present 
in compression driven cochlear sections, however that is a start.

Matt

[norena:2002] @ARTICLE{norena:2002,
  author = {Norena, A. and Micheyl, C. and Durrant, JD and Chery-Croze, 
S. and
	Collet, L.},
  title = {{Perceptual correlates of neural plasticity related to 
spontaneous
	otoacoustic emissions?}},
  journal = {Hearing Research},
  year = {2002},
  volume = {171},
  pages = {66--71},
  number = {1},
  publisher = {Elsevier Science}
}

On Tue, 2009-01-13 at 10:24 +0000, Andrew Milne wrote:
Dear members of the list,
> 
> Is there a consensus on the size of the frequency difference limen for 
the f0 of complex tones such as those 
> produced by musical instruments - i.e. containing both resolved and 
unresolved harmonics. References to papers 
> describing the precise nature of the tests used would also be helpful.
> 
> Many thanks
> 
> Andrew Milne
> 
> -------------------------------------------------
> Visit Pipex Business: The homepage for UK Small Businesses
> 
> Go to http://www.pipex.co.uk/business-services

On Tue, Jan 13, 2009 at 10:24:39AM +0000, Andrew Milne wrote:
> Dear members of the list,
> 
> Is there a consensus on the size of the frequency difference limen for the f0 of complex tones such as those 
> produced by musical instruments - i.e. containing both resolved and unresolved harmonics. References to papers 
> describing the precise nature of the tests used would also be helpful.
> 
> Many thanks
> 
> Andrew Milne
> 
> -------------------------------------------------
> Visit Pipex Business: The homepage for UK Small Businesses
> 
> Go to http://www.pipex.co.uk/business-services

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