April 16, 2018 a meeting of the State Commission for Radio Frequencies (SCR), which, in particular, it was decided to the allocation of frequency 175.872 - 228.128 MHz to create in our country networks for terrestrial digital audio broadcasting standard DAB +.
Terrestrial digital broadcasting in Russia (the first standard DVB-Tthen DVB-T2) Has been working for more than ten years, and with the radio that something is not set. Until now, broadcasting takes place in the analog FM-band. And this despite the fact that some countries have already We began to disconnect analog broadcasting.
Standard DAB + can operate in the range from 47 MHz to 3 GHz and allows the simultaneous broadcast from four to twenty digital radio stations on the same frequency. This standard uses a compression MPEG-4 HE AAC v2. It is believed that such high-quality broadcasting with a compression sufficient flow 64 kbit / s, and for normal - 48 kbit / s.
The multiplex configuration information is transmitted in addition to the audio data, program data (eg the name of the song that is currently playing), service data, and dynamic control signals range. The ability to compress the dynamic range helps when listening in noisy environments, and can also be useful for people with hearing impairments. The auxiliary channel enables more data to transmit at rates up to 64 kbit / s. Supports HTML and JPEG.
DAB + is now working in Austria, Germany, Italy, Denmark, Belgium, Norway, Switzerland, Latvia and Thailand.
Most manufacturers of car stereos already released phones with the support of the standard, but a smartphone with support for DAB + there is only one - it is LG Stylus 2, released in 2016 year.
Of course, the allocation of more frequencies does not mean that digital broadcasting in Russia will begin to flourish. Now it is difficult to say when it begins broadcasting the first multiplex in the DAB + standard, but we can certainly say that digital broadcasting in our country finally moved off dead center.
© 2018 Alex Nadozhin