Forums

GOERTZEL ALGORITHM VERIFICATION

Started by jadhav_rahul July 24, 2008
Hi all,
      I want to implement Goertzel algorithm for DTMF detection,
I want to know the basic things to consider to implement it i.e should i
directily Choose N(sample length)=205 (as more optimsed) or which factors
should be taken in acccount for it.
      Also how should i test my code i.e what inputs should i use for
simulation? is there any standard I/O files available?
        

Thanks in advance,
Rahul Jadhav.
Hi all,
      I want to implement Goertzel algorithm for DTMF detection,
I want to know the basic things to consider to implement it i.e should i
directily Choose N(sample length)=205 (as more optimsed) or which factors
should be taken in acccount for it.
      Also how should i test my code i.e what inputs should i use for
simulation? is there any standard I/O files available?
        

Thanks in advance,
Rahul Jadhav.
> >"jadhav_rahul" <rahul.jadhav@spectross.com> wrote in message >news:HNOdnbI-OtwLoxXVnZ2dnUVZ_gydnZ2d@giganews.com... >> Hi all, >> I want to implement Goertzel algorithm for DTMF detection, > >There are 999999 referrences and appnotes of how to do that. >BTW, although Goertzel works quite well in the practice, the Goertzel
based
>decoder will not be compliant with the DTMF standard. > >My 2 cents: >http://www.abvolt.com/research/Multitone%20detect-IEEE.pdf > > >> I want to know the basic things to consider to implement it i.e should
i
>> directily Choose N(sample length)=205 (as more optimsed) or which
factors
>> should be taken in acccount for it. > >The DTMF was intended be decoded by the lowpass/highpass split filter and
a
>pair of frequency counters. As simple as that. > >> Also how should i test my code i.e what inputs should i use for >> simulation? is there any standard I/O files available? > >There is the standard DTMF test set from BellCore which includes noisy
tones
>with the different levels, etc. > >Vladimir Vassilevsky >DSP and Mixed Signal Consultant >www.abvolt.com > > >HI,
I am new in this area so can you plz list out the important steps for simulation of goertzel algorithm. Thanks in advance, Rahul Jadhav.
> >"jadhav_rahul" <rahul.jadhav@spectross.com> wrote in message >news:HNOdnbI-OtwLoxXVnZ2dnUVZ_gydnZ2d@giganews.com... >> Hi all, >> I want to implement Goertzel algorithm for DTMF detection, > >There are 999999 referrences and appnotes of how to do that. >BTW, although Goertzel works quite well in the practice, the Goertzel
based
>decoder will not be compliant with the DTMF standard. > >My 2 cents: >http://www.abvolt.com/research/Multitone%20detect-IEEE.pdf > > >> I want to know the basic things to consider to implement it i.e should
i
>> directily Choose N(sample length)=205 (as more optimsed) or which
factors
>> should be taken in acccount for it. > >The DTMF was intended be decoded by the lowpass/highpass split filter and
a
>pair of frequency counters. As simple as that. > >> Also how should i test my code i.e what inputs should i use for >> simulation? is there any standard I/O files available? > >There is the standard DTMF test set from BellCore which includes noisy
tones
>with the different levels, etc. > >Vladimir Vassilevsky >DSP and Mixed Signal Consultant >www.abvolt.com > > >HI,
I am new in this area so can you plz list out the important steps for simulation of goertzel algorithm. Thanks in advance, Rahul Jadhav.