GOERTZEL ALGORITHM VERIFICATION

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.