GSoC 2008

[Jeremiah Flerchinger]

Shawn Rutledge wrote:
> On Wed, Mar 26, 2008 at 3:18 PM, saurabh gupta
> <saurabhgupta1403 at gmail.com> wrote:
>   
>> 1)Speech Recognition Method:
>>
>> i have already developed a speech recognition method on 8-bit
>> microcontroller. i used the digital filters(chebyshev II) and correlation
>> method to match the spoken word with that already stored in memory. i am
>> further planning to improve it using Hidden markov model(HMM) through Linear
>> Predictive Coding (LPC) and fast fourier transform (FFT). A success rate of
>> 90% can be achieved using this method.
>>     
>
> I'm impressed you managed to do that on an 8-bit microcontroller!
>
> Free software for speech recognition has been slow to develop in the
> past.  Now there are a couple:
>
> http://freshmeat.net/search/?q=speech+recognition&section=projects&Go.x=0&Go.y=0
>
> E.g. there is Sphinx and Julius, and there is also an HMM toolkit
> which might be useful (or not).
>
> Do you expect to achieve better performance than those?
>   
I'm assuming you used dynamic time warping with your correlation 
method.  I can see not too much processing power being needed for 
correlation with a limited vocabulary.

I would be excited to see existing free voice software fully integrated 
into Openmoko with a custom language model for command & control.  
PocketSphinx (http://www.speech.cs.cmu.edu/pocketsphinx/) may be a good 
starting point, since it's supposed to be optimized for embedded ARM 
applications.
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