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Communications Revolution |
Communications Networks |
Optical Fibres |
Photonic Devices |
Future of Communications | Credits |
The bandwidth required to send a signal or to transmit data depends on the type of signal.
Let's look at some typical signals and how much bandwidth they require:
| SIGNAL | BANDWIDTH |
|---|---|
| telephone (voice) |
4 kHz |
| AM radio (audio) |
10 kHz |
| FM radio (high quality audio) |
200 kHz |
| television (video + audio) |
6 MHz |
For example, normal speech on a telephone line requires 4 kHz of bandwidth.