Why do telephone networks have voice channels with a bandwidth that is much narrower than the spectrum

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Why do telephone networks have voice channels with a bandwidth that is much narrower than the spectrum of the human voice?

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Business Data Communications Infrastructure Networking and Security

ISBN: 978-0133023893

7th edition

Authors: William Stallings, Tom Case

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Question Posted: Mar 11, 2016 02:13 AM

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Why do telephone networks have voice channels with a bandwidth that is much narrower than the spectrum

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Using a smaller bandwidth helps keep voice transmission co...View the full answer

Business Data Communications Infrastructure Networking and Security

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