Abstract: Goertzel algorithm is a fast Discrete Fourier Transform (DFT) algorithm, which is widely used in traditional DTMF signal detection systems. However, when using the Goertzel algorithm for ...

Abstract: In this paper we have proposed different design techniques for the Goertzel Algorithm for dual tone multi-frequency (DTMF) detection. We have proposed parallel and sequential designs ...

What is The Goertzel Algorithm? The Goertzel algorithm can perform tone detection using much less CPU horsepower than the Fast Fourier Transform, but many engineers have never heard of it. This ...