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PAL-M is the analogue colour TV system used in Brazil since early 1972, [1][2] making it the first South American country to broadcast in colour. It is unique among analogue TV systems in that it combines the 525-line 30 frames-per-second System M with the PAL colour encoding system (using very nearly the NTSC colour subcarrier frequency ...
As of 2017, 420 million people are able to receive DAB services, [1] with over 2,100 DAB services on air in 38 countries. This article provides brief information on most of the regions using DAB, DAB+ and DMB. The majority of these services are using DAB+, with only Ireland, UK, Romania and Brunei still using a significant number of DAB ...
Advanced Mobile Phone System (AMPS) was an analog mobile phone system standard originally developed by Bell Labs and later modified in a cooperative effort between Bell Labs and Motorola. It was officially introduced in the Americas on October 13, 1983, [1][2][3] and was deployed in many other countries too, including Israel in 1986, Australia ...
29 February 2016. (2016-02-29) [2] Owner. Arqiva (40%) Bauer Media Group (30%) News Broadcasting (30%) [3] Sound Digital is a semi-national commercial digital radio multiplex in the United Kingdom, owned by Arqiva, Bauer Media Group and News Broadcasting. The multiplex covers 73% of the population from a total of 45 transmitters.
Cellular frequencies. Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices, such as mobile phones, to connect to cellular networks. [1] Most mobile networks worldwide use portions of the radio frequency spectrum, allocated to the mobile service ...
Sound map. Sound maps are digital geographical maps that put emphasis on the sonic representation of a specific location. Sound maps are created by associating landmarks (streets in a city, train stations, stores, pathways, factories, oil pumps, etc.) and soundscapes. The term “soundscape” refers to the sonic environment of a specific locale.
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Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit resolution. Digital audio is also the name for the ...