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HD Voice (aka wideband codecs)

Recently there have been a lot buzz around the concept of HD Voice specially in telco forums.  This post will try to answer the most frequently asked questions around the concept.

What is HD Voice?
High Definition (HD) Voice is a marketing term referring to products and technologies supporting the transmission of audio signals in conversational services with higher quality (that means making the speech signal played in the receiver side as similar as possible to the original speech captured in the originator side).
As you can imagine, higher quality implies higher bandwidth consumption.
The technical term for HD Voice would be the use of wideband codecs as it would be described later.

Why is it important?
Because voice quality impacts in customer satisfaction being a competitive advantage over competence, and because according to some studies by skype  voice quality and average call duration are proportional [1].

Is it something new?
No. Skype popularized this already existing technolog…