FIELD: physics; acoustics.
SUBSTANCE: invention relates to sound broadcasting and sound accompanying in television and can be used in designing sound broadcasting networks. Data transmission system for sound broadcasting in digital format with compression on main channels is designed for transmitting analogue signals for sound broadcasting to main channels in high-frequency transmission systems, including a reference circuit for the structural circuit of main sound broadcasting with a terminal transmitting point, in which signals are modulated to transmit them into the high-frequency spectrum of the transmission system, and a terminal reception point, where high-frequency signals are demodulated to extract the sound broadcasting signal. The reference circuit, which is designed for transmitting sound broadcasting signals over the main network in digital format in a standard bit transfer rate of 2048 kbps, contains 1 to 2 stereo channels or, respectively from two to four monochannels, corresponding to analogue monochannels with frequency band of 40 to 15000 Hz transmit from more than six channels in digital format, corresponding to analogue channels with frequency band of 40 to 15000 Hz, through a method of compressing the frequency spectrum and introducing quantisation levels into the bit transfer rate of digital transmission systems.
EFFECT: increased number of transmission channels in bit transfer rate of 2048 kbps.
4 dwg
