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- Radio stations usually broadcast AM and FM stations using analog waves only. The results of the transferred analog waves produce the music that we hear through our audio player. They are usually accompanied with reducing static, hiss, pops, and fades throughout the broadcast. HD Radio broadcasting ultimately eliminates these problems by sending both digital and analog signals in a bundled package to the user.
- The station must compress the digital signal before they combine it with the analog signal. This is done in a similar fashion to mp3 files.
- The radio station broadcasts, or transmits, this new bundled signal to your receiver.
- City buildings and other objects prevent the transmitted signal by creating multiple paths for the signal. Static from conventional radio receivers are a direct result from the multiple paths.
- The HD Radio receivers are built to filter out the static of the received signal transmission. To go along with the filtering, the receiver was specifically designed to handle both analog and digital signals. This is the only required part that must be purchased in order to receive HD Radio.