Hi everyone,

I am working on a Liar Detector project. when speaker speakers a few
words into the system via mic, and the system matches the audio wave pattern or frequency with
stored lie detection pattern or frequency(may be an algorithm) . According to that pattern
program will decide it is lie or not
Has anyone done this program before? I am very new in Matlab and I
would very much appreciate it if anyone could will help me to do this project .ur new ideas
also welcome

Thanks

Hi....Shan
so you are looking for a way to invent Liar Detector project....
let's start with truth....
The voice frequencies of a normal spaeker is(let's say truth
teller)has an especial algorithm in these cases & such programs, you
have to ask some truth things from your sample person.......program
analysis the voice(by FFT & Decrements of the voice) then makes a
conclusion about the truth (interruption,....)
then you ask some nonsences questions that the person's mind go far
awar from truth then ask your questions......camparison between truth
and ansers to your questions is the point...
the tempreature of the sensitive parts of the body helps a lot to get
better conclusions..
In matlab you have to star with wave recording....then FFT
analysis.....damping of voice by logarithmic decrements...and it's
better to use a thermometer and link it by a Smulink script to your
program....
Hope your success...

Sincerely yours....
Iraj   Karkhi
-----------------------------------------------------------------------------------------------
-----
Departement of WOOD SCIENCE AND TECHNOLOGY
Assistant Professor and
Vice-President for researches in NDT projects in WOOD&PAPER Industrials
Islamic Azad University, Karaj Branch - Iran
Office: +98 261 2235908
Cell: +98 912 5601938
-----------------------------------------------------------------------------------------------
-------

On 5/20/08, s...@yahoo.com <s...@yahoo.com> wrote:
> Hi everyone,
>
> I am working on a Liar Detector project. when speaker speakers a few
> words into the system via mic, and the system matches the audio wave pattern
> or frequency with stored lie detection pattern or frequency(may be an
> algorithm) . According to that pattern program will decide it is lie or not
> Has anyone done this program before? I am very new in Matlab and I
> would very much appreciate it if anyone could will help me to do this
> project .ur new ideas also welcome
>
> Thanks