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The National Communications Authority (NCA) has formally launched the trial phase of digital audio broadcasting (DAB) in the nation. This achievement positions the country as the pioneer in West Africa and the fourth in the entire African continent to adopt this state-of-the-art radio technology.
DAB signifies an advanced radio broadcasting system that revolutionizes the transmission of audio content over the airwaves. Setting it apart from traditional FM radio, DAB employs digital signals rather than analog ones. This transition results in significant improvements in reception quality and a notable reduction in signal interference.
Additionally, DAB functions on a unique frequency band compared to FM radio, enabling up to 18 stations to effectively share a single transmitter, thus reducing energy consumption. Furthermore, it enables the simultaneous transmission of supplementary data services alongside audio content, enhancing the overall user experience.
The trial will encompass 18 audio channels sourced from Accra and Kumasi. These include Unique FM, Asempa FM, Citi FM, Hot FM, Peace FM, Starr FM, Asaase FM, Atlantis FM, Class FM, Oman FM, and Radio Univers, among others.
Understanding DAB’s Operation
This groundbreaking innovation involves converting audio signals from radio stations into digital format. This digital data is then compressed and merged with data from other stations (multiplexing) before being transmitted for general reception. DAB receivers decode the transmitted data, converting it back into audio signals for a seamless listening experience.
Operating within the frequency range of 174 to 230 MHz, Ghana has embraced the DAB+ standard, while FM radio uses the frequency band 87.5 to 108 MHZ. DAB+ offers enhanced audio quality and higher spectrum efficiency compared to the first-generation DAB.
Addressing Frequency Constraints
During the launch of the trial phase in Accra, Communications and Digitalization Minister Ursula Owusu-Ekuful emphasized the government’s resolute commitment to embracing digital innovation, positioning the country at the forefront of digital transformation in Africa.
She underscored the necessity of maintaining the quality of broadcasting services amidst the rapid evolution of the radio and TV industry, which is closely entwined with telecommunications.
The Director-General of the NCA, Joe Anokye, added that given the escalating demand for sound broadcasting services and limited FM frequency availability in major cities, DAB effectively tackles the frequency constraints by enabling stations to reach more cities while broadcasting the same content.
Bernie O’Neill, Project Director at WorldDAB, called for the creation of a working group to oversee the trial process and ensure the delivery of unique content that can’t be found on FM, enticing listeners to switch to DAB.
In conclusion, the introduction of Digital Audio Broadcasting (DAB) ushers in a new era of enhanced sound quality, diverse station choices, and interactive features that redefine the listener experience. This technology transcends the limitations of traditional analogue FM radio, promising a transformative and captivating auditory journey for all listeners.
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