Hi, Could someone give me the formula to calculate the frequency resolution for a Goertzel filter? I saw somewhere that it was fs/N, where fs is the sampling frequency and N is the block size, is this correct?

# Goertzel Frequency Resolution

Started by ●January 16, 2006

Reply by ●January 16, 20062006-01-16

<jois.de.vivre@gmail.com> wrote in message news:1137447872.881256.156020@f14g2000cwb.googlegroups.com...> Hi, > > Could someone give me the formula to calculate the frequency resolution > for a Goertzel filter? I saw somewhere that it was fs/N, where fs is > the sampling frequency and N is the block size, is this correct?Yes. You can verify this with several references that you can find using google (or perhaps your question has more to it). You were able to get a gmail account but don't like googling?? I find that difficult to understand. Cheers Bhaskar

Reply by ●January 16, 20062006-01-16

Bhaskar Thiagarajan wrote:> <jois.de.vivre@gmail.com> wrote in message > news:1137447872.881256.156020@f14g2000cwb.googlegroups.com... > > Hi, > > > > Could someone give me the formula to calculate the frequency resolution > > for a Goertzel filter? I saw somewhere that it was fs/N, where fs is > > the sampling frequency and N is the block size, is this correct? > > Yes. > You can verify this with several references that you can find using google > (or perhaps your question has more to it). > You were able to get a gmail account but don't like googling?? I find that > difficult to understand. > > Cheers > BhaskarI did google it, but found no references. Thanks for the confirmation!

Reply by ●January 16, 20062006-01-16

<jois.de.vivre@gmail.com> wrote in message news:1137451574.939667.274550@z14g2000cwz.googlegroups.com...> > Bhaskar Thiagarajan wrote: > > <jois.de.vivre@gmail.com> wrote in message > > news:1137447872.881256.156020@f14g2000cwb.googlegroups.com... > > > Hi, > > > > > > Could someone give me the formula to calculate the frequencyresolution> > > for a Goertzel filter? I saw somewhere that it was fs/N, where fs is > > > the sampling frequency and N is the block size, is this correct? > > > > Yes. > > You can verify this with several references that you can find usinggoogle> > (or perhaps your question has more to it). > > You were able to get a gmail account but don't like googling?? I findthat> > difficult to understand. > > > > Cheers > > Bhaskar > > I did google it, but found no references. Thanks for the confirmation!Hmm..the first DSP related link on google gave me a link that has this info... http://www.google.com/search?hl=en&lr=&rls=GGLG%2CGGLG%3A2005-49%2CGGLG%3Aen&q=Goertzel Cheers Bhaskar

Reply by ●January 20, 20062006-01-20

On 16 Jan 2006 13:44:32 -0800, jois.de.vivre@gmail.com wrote:>Hi, > >Could someone give me the formula to calculate the frequency resolution >for a Goertzel filter? I saw somewhere that it was fs/N, where fs is >the sampling frequency and N is the block size, is this correct? >Hi, I'm not sure what you mean by frequency resolution of "a Goertzel filter", but the frequency response of the Goertzel *algorithm* is identical to the frequency response of the discrete Fourier transform (DFT). [-Rick-]