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Fig. 4 | EURASIP Journal on Audio, Speech, and Music Processing

Fig. 4

From: Fast fundamental frequency determination via adaptive autocorrelation

Fig. 4

Gross 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 20 ms, i.e., minimal expected frequency of 50 Hz, was set, hence the lowest plotted value is higher than that for the other algorithms

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