The joys of 434/586.
Assuming you understand how VQ works, you could try to implement if first on matlab.
Are you doing word verification or people recognition?
1 - take in a training sample of what you want to verify. if you want to verify people, each person should have a bank.
if you want to differentiate words, each words should have a bank.
- to do this, sample the speech, take the fft, compute Mel frequency cepstrum. apply VQ or divide into clusters.
does this help?