Lpc2000

Thanks Leon. Unfortunately I need speaker independent recognition.
Just the numbers one to 9 would be useful.

Dave S.


--- In lpc2000@...m, "Leon Heller" <leon.heller@...> wrote:
>
> ----- Original Message ----- 
> From: "dsidlauskas1" <dsidlauskas@...>
> To: <lpc2000@yahoogroups.com>
> Sent: Thursday, March 30, 2006 4:16 PM
> Subject: [lpc2000] Speech Recognition Software
> 
> 
> > I'm looking for some simple speech recognition software to run on a
> > 2138.
> >
> > It only need recognize imdividualy spoken numbers and letters, and a
> > few words such as "yes" and "no".
> >
> > Does anyone have a suggestion?
> 
> Speaker-independent or -dependent? If the latter, the old technique
of using 
> a bank of op-amp band-pass filters and comparators, implemented in
software, 
> should work. Many years ago I played with a speech recognition unit
for the 
> TRS-80 that used that technique, and it worked quite well. The
microphone 
> had a PTT button, IIRC, and one pressed the button, spoke the word, and 
> released it. The system had to be trained several times on each
word; the 
> software averaged the values and stored a template. When recognising
words, 
> the utterance was analysed by the filters and compared with each
template in 
> turn, and the best match was output as the recognised word. I think
it could 
> handle a maximum of 32 words.
> 
> These days, one would use an FFT for the frequency analysis.
> 
> Leon
> --
> Leon Heller, G1HSM
> leon.heller@...
> http://www.geocities.com/leon_heller
>