# [PD] IPA Vowel space analyzer

Ed Kelly morph_2016 at yahoo.co.uk
Thu Oct 28 19:53:11 CEST 2010

```I had a go a number of years ago at coding an LPC-based formant detector for PD,
based on the Speech Filing System from University College London. It has since
remained on my "to do" list, since I got the object to load but there were
problems in getting it working (i.e. it didn't, and crashed PD).

In theory, if you can detect the peaks in a Linear Predictive Coding-derive
polynomial plot, then you can determine the vowel very accurately.

It would be nice to make this work - I'll dig it out and perhaps someone can
help me understand why it doesn't work (and fix it). I'll dig it out and try to
GDB it tonight, but I have to feed my child now.

Best,
Ed
Metastudio 4 for Pure Data - coming soon!
Metastudio 3 still available at http://sharktracks.co.uk/puredata

----- Original Message ----
From: Mathieu Bouchard <matju at artengine.ca>
To: Ludwig Maes <ludwig.maes at gmail.com>
Cc: Pd List <pd-list at iem.at>
Sent: Thu, 28 October, 2010 15:26:05
Subject: Re: [PD] IPA Vowel space analyzer

On Thu, 28 Oct 2010, Mathieu Bouchard wrote:

> Then for example I numbered the above like
>  001 = 6 0 1 = [ɶ]
>  200 = 4 0 0 = [ɛ]
>  511 = 1 1 1 = [ʏ]
>  531 = 5 3 1 = [ʊ]

sorry, I screwed that one. I had gotten the first digit backwards, and I began
to fix it and didn't finish. The correct list is :

001 = 0 0 1 = [ɶ]
200 = 2 0 0 = [ɛ]
511 = 5 1 1 = [ʏ]
531 = 5 3 1 = [ʊ]

else it wouldn't be consistent at all.

_______________________________________________________________________
| Mathieu Bouchard ------------------------------ Villeray, Montréal, QC

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