Fig. 4From: Fast fundamental frequency determination via adaptive autocorrelationGross error rates of the AAC algorithm, the SHRP algorithm, the autocorrelation algorithm, and the YIN algorithm; left: DB1, center: DB2, and right: DB3. The gross error rates are plotted as a function of the time t est used for a single estimation. Due to the adaptive nature of the AAC and consequently varying estimation durations, averaged estimation times for the different databases are plotted, which is the reason for non-alignment of the values on the x-axis for the AAC algorithm with the other algorithms. For the YIN algorithm, a maximum expected period of 20Â ms, i.e., minimal expected frequency of 50Â Hz, was set, hence the lowest plotted value is higher than that for the other algorithmsBack to article page