mrugesh_k wrote:
> hi friends,
>     i am using GOERTZEL algorithm for single tone detection but the
> problem is that it takes 80ms for single output i want to minimise its
> input sample can anybody tell me is sliding GOERTZEL is a solution for
> this?
> 
> currently N = 240,
> Fs = 3000
> F = 217
> k = 17
> 

You could adjust N downwards, but that will increase the bandwidth of 
the detector.  The bandwidth is Fs/N.  You could try N=70, k=5, which 
would center the detector on 3000*5/70 = 214Hz and have a bandwidth of 
43Hz.  With N=240, k=17, you're centered on 212Hz with a 12.5Hz.


-- 
Jim Thomas            Principal Applications Engineer  Bittware, Inc
jthomas@bittware.com  http://www.bittware.com    (603) 226-0404 x536
When you know how things work, the world is one big sandbox.  - Avins

hi friends,
    i am using GOERTZEL algorithm for single tone detection but the
problem is that it takes 80ms for single output i want to minimise its
input sample can anybody tell me is sliding GOERTZEL is a solution for
this?

currently N = 240,
Fs = 3000
F = 217
k = 17

thanks