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speech Comparison method

Started by Rick Lee October 4, 2003
Dear All,

I am doing a project for speech recognition, which method will be
good to compare two speechs and tell how much they are matched?

I am trying using LPC and FFT, but the result is not so good, maybe I
should do some quantiztion first, any idea?

Thanks a lot!

Rick



Hi Rick,
For comparing the similarity of two speech signals the best tool would be cross correlation.
regards,
Krishna.



FFT analysis gives you the frequency components but you miss the
loaclized time properties. You can make use of wavelet decomposition
and look at the features at different frequency sub-bands. Cross
correlation is also a good tool, but you have to be good at
interpreting the results..

--- In , "Rick Lee" <rlee@a...> wrote:
> Dear All,
>
> I am doing a project for speech recognition, which method will be
> good to compare two speechs and tell how much they are matched?
>
> I am trying using LPC and FFT, but the result is not so good, maybe
I
> should do some quantiztion first, any idea?
>
> Thanks a lot!
>
> Rick