How to build HMM model for continuous speech recognition?

Hey! i m working on continuous speech recognition. i read everything on Hidden Markov Model(HMM), i m not getting how to implement it in Matlab. Can any 1 help me out on how to build model in matlab? i m also not getting what shud be hmm states and hmm observation for my model.. Thanx in advance

[RITESH]

Are you done with your HMM based Speech Recognizer? of so, can you share the file with me, i mean the source code for reference. I have no idea where to start and how to develop it from scratch.Also may i know how much time it may involve?

Answer 1

[777]

hmm based speech recognition system are really difficult to built.i worked hard 4 months but could not get it.then i changed it to word recognition system based on psd and filter fingerprints.i dont want to demoralize.

here are the links that may help you: http://www.mathworks.in/company/newsletters/digest/2010/jan/word-recognition-system-matlab.html

for any other help just google ,you may get some help from there.here you will get help only if you have some basic idea already .

[777]

here is another one www.researchmanuscripts.com/PapersVol2N2/IJCBRVOL2N2P3.pdf

[Ruchi kansara]

i want to do word spotting in continuous speech, b4 i tried dtw algorithm but with constraint that input speech shud have reasonable pauses in between each word.. that's y i switched 2 hmm.. i read all about hmm but confused what shud be hmm states.. i got idea that v have 2 take hmm states as vocal tract shapes and each state comprising of phonemes as observations.. but how to identify dese for a particular word.. do help me for identifying hmm states and its observations.

[RITESH]

Are you done with your HMM based Speech Recognizer? of so, can you share the file with me, i mean the source code for reference. I have no idea where to start and how to develop it from scratch.Also may i know how much time it may involve?