# Reliable peak picking algorithm?

I've written an application that estimates pitch based on autocorrelation function. I did peak picking by comparing vector values to determine whether the central one is a peak or not, but this method is not working well.

Can someone indicate a reliable peak picking algorithm?

• i have little idea what you mean by "comparing vector values to determine whether the central one is a peak or not..." what vector? (how'zit defined?) and "central one"? "one" what? and can you use a little $\LaTeX$ and show us how you are defining your autocorrelation function in terms of the samples? – robert bristow-johnson Jun 16 '14 at 3:04
• you might want to take a look at this paper. – robert bristow-johnson Jun 16 '14 at 4:51