A wideband antenna is one with approximately or exactly the same operating characteristics over a very wide Passband.
The term Wideband Audio or (also termed HD Voice or Wideband Voice) denotes a telephony using a wideband codec, which uses a greater frequency range of the audio spectrum than conventional voiceband telephone calls, resulting in a clearer sound.
Wideband in this context is usually considered to cover frequencies in the range of 50–7,000 Hz, therefore allowing audio with richer tones and better quality.
[citation needed] According to the United States Patent and Trademark Office, WIDEBAND is a registered trademark of WideBand Corporation, a US-based manufacturer of Gigabit Ethernet equipment.
[1][2] Within Australia and New Zealand, the word WIDEBAND is a registered trademark of "Wideband Technology Pty Ltd", an Australian-based company specialising in data and communication equipment.