There is currently a need in cochlear implants to evaluated using vowel recordings and compared against the develop speech coding algorithms that provide better access to FO estimator used in the STRAIGHT algorithm [7]. pitch cues, known to be critical for music perception. Such algorithms require an estimate of the fundamental frequency II. FO DETECTIONALGORITHIM (FO). This paper presents the implementation of a real-time pitch (FO) detector on a Personal Digital Assistant (PDA). The The vocal

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... pitch (Fo) was determined using the pitch detection algorithm is based on the autocorrelation autocorrelation function. The autocorrelation function of the function and is implemented real-time on a Dell AXIM Pocket signal x[n] is given by: PC. Its performance, in terms of FO accuracy, is compared n=oo against that obtained by the pitch detection algorithm used in RX [T] E x[n]x[n + T] STRAIGHT. The implementation details and real-time n=-oo