The article reveals the peculiarities of metrorhythmic organization of the classical dance cycle (suite), typical for Russian ballet of the XIXth century and its evolution in the early XXth century under the influence of innovations in the field of rhythm in the ballets by Igor Stravinsky. The purpose of this article is to find mechanisms of interaction between dance and music based on coordination of their temporal parameters. The material of analysis is the classical dance cycle that performs both compositional and dramaturgical functions in the ballet. Apart from the metrorhythmic and compositional system of organizing time in ballet music, other types of time can be distinguished: real, psychological (subjective) and conceptual, artistic time organizing the processes of the characters' life cycle and the development of action in the virtual time of the artwork. In a classical dance cycle in each number, real time predominates, but when the numbers alternate, subject to the principle of contrast, the conceptual time has a corrective effect. The alternation of musical and choreographic numbers in a ballet determines the rhythm of the form or "compositional rhythm" (according to V. P. Bobrovsky). The correlation of temporal proportions of numbers is considered on the example of ballets "Swan Lake" by P. Tchaikovsky and "Petrushka" by I. Stravinsky. The compositional unit is the duration of the stage segment of the musical form, the change of which creates the rhythm of the form.
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method
