What does HD Voice sound like on a mobile VoIP call?

GigaOM: Here in the U.S., we may be ahead on LTE subscribers, but when it comes to voice quality on our mobile phones, we’re still lagging behind. Network operators in other countries have adopted HD Voice and wideband audio codecs to provide a better voice calling experience: Think Three UK, Telestra and T-Mobile USA’s parent company, Deutsche Telekom. In 2011, these and other carriers around the world took mobile voice calling to the next level.

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