[Acoustic analysis of signals in mammals].

Spectral-prosodic characteristics of signals were analyzed synchronously with the main frequency for 32 mammals and one reptile using a KAZ-01 complex sound analyzer. The method of phoneme analysis was adapted for analysis of the signals. The main features of signaling in mammals have been revealed, which differed from those in birds and humans: low frequency range, low fundamental frequency, small number of local maxima, small frequency distance between them, and a significant amount of local maxima with zero energy.

[Comparison of species-specific bird sound signals and human speech sounds].

We carried out a comparative study of spectral-prosodic characteristics of bird vocalization and human speech. Comparison was made between the relative characteristics of the fundamental frequency and spectral maxima. Criteria were formulated for the comparison of bird's signals and human speech.

[Comparative analysis of spectral-prosodic characteristics of the human prototype signals and phonation of the common maynah (Acridotheres tristis)].

A comparative study was carried out of the spectral-prosodic characteristics of phoneme "a" (vowel "ya" from Russian word "Byaka") pronounced by the common maynah and humans (a total of about 50 signals). A phenomenon of mutual express-imitation has been established in the course of dialogue contact between the maynah and female speaker. Common similarity and difference features of the acoustic characteristics of the human and bird's signals have been revealed, as well individual similarity features of the signals upon the dialogue contact.

[Comparative analysis of the acoustic characteristics of speech models of human prototypes and budgerigar (Melopsittacus undulatus) imitations].

Phonemic comparative analysis of vowel (i) of the Russian language was carried out in pronunciation of nine budgerigars and humans (three men, five women, and three children under eleven years old). A complex device "KAPROS-01" was used as an analyzer. The contact signals of the same individuals was also analyzed.

[Hissing--a multifunctional and interspecific animal signal].

Hissing signals were studied in various groups of animals: insects, reptiles, mammals, and birds. Hissing was analyzed using a computer-based acoustic analyzer KAPROS-01. General similarities of hissing were noted for representatives of taxonomically remote orders and classes, as well as evident structural differences, not always related to the absence of taxonomic relatedness of the given species.