Using the Digital Signal 0 (DS0) encoding, phone calls became digital with an 8 kHz sample rate using 8-bit pulse code modulation, working out to a maximum data rate of 64 kbps per phone line.

which can be used for alternate radio programming or data services such as song information, weather reports and car navigation updates. HD Radio transmits the digital signals in unused portions ...

It converts the countless reams of a digital song's data into analogue signals that are intelligible to speakers and headphones – and the human ear. You see, they need an analogue waveform to receive ...

Analogue data must be converted to digital before a computer can use it. Sound can be transmitted as an analogue signal when you are speaking, or a digital signal when recorded onto a computer or ...