Accuracy of jitter and shimmer measurements for speaker in the database TIMIT and NTIMIT

In this work we present the method that we have adopted in order to leave in search of the speaker through different measures of jitter and shimmer are measures of the fundamental frequency and of amplitude variations cycle to cycle. We have used these two indices as they characterize some aspects concerning the Voice individuals, so it helps us to have a certain degree of specificity of speaker. This study thus allows us on the one hand to better understand where these indices to discriminate the speakers and sets out criteria to distinguish the quality of the signal according to the conditions of registration for the automatic recognition of the speaker with the base TIMIT and NTIMIT.