FIELD: acoustics.
SUBSTANCE: invention relates to acoustics, in particular to playback synchronisation devices. Main device comprises an input module for inputting signals, a playback processing module, a display module, a speaker, an auxiliary receiving device comprises a microphone, a computational module for the number of sound synchronisation features, a buffer, a separation processing module, the output of which is connected to the buffer, a synchronisation module, a playback module, a playback processing module, a loudspeaker, a display module. Computational module for the number of sound synchronisation features comprises periodicity detection modules, a frequency bandwidth splitting module, a periodicity intensity detection module, a periodicity information combining module, a peak detection module, a downsampling module. Providing device comprises a conversion module, an output module, a sound synchronisation feature number calculation module, a multiplex processing module. Synchronisation calculation module comprises a frame rate conversion module, block combination modules, similarity calculation modules, and an optimal path search module. According to the method, the processing of calculating the number of sound synchronisation feature is started, the sound signal is divided in time sections, the sound signal is divided into four frequency bands, information about the frequency of the signal is extracted, the periodicity intensity is calculated, periodicity information is combined, peaks are detected and downsampling is performed.
EFFECT: enabling to synchronise multiple pieces of content received through different routes.
20 cl, 29 dwg
