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Telephony is voice communication between remote parties over telecommunications networks. Long distance or telephony is done with telephones that convert the speech into electrical signals that are then transmitted over the telephone network


Transmission Bandwidth for Long Distance

Transmission Bandwidth for Long Distance

TelephonyBecause of the high redundancy of

human speech, people use as small afrequency band

as possible for reasons of frequencyeconomy. For the bandwidth of the frequency band, the speech recognizability of the subscribers and a sufficient sentence and syllable intelligibility were decisive. This is 3.1 kHz, in the frequency range from 300 Hz

to 3.4 kHz.

Using speech memories, speech communication can also be time-delayed.

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Englisch: telephony
Updated at: 04.03.2008
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