Алгоритм нахождения периодов основного тона с помощью многоуровневого анализа локальных экстремумов сигнала

Abstract

A new method of pitch detection is explored. It is based on finding two levels of local extrema in iltered source signal, second of which is derived from the first. In different parts of signal the sequences of these extrema may represent the pitch period markers, and task of the algorithm shown below is to determine whether they do it or not and build united sequence of markers that accurately match pitch periods.