What Is HD Voice?
HD Voice, or wideband audio, refers to the next-generation of voice quality for telephony audio resulting in high definition voice quality compared to standard digital telephony "toll quality." HD Voice uses wideband codecs (such as G.722 and G.722.2) audio connections to more accurately reproduce the human voice with a wider range of frequency coverage. The result is significantly more natural sounding speech and a wider range of sounds promoting audio clarity and clear conversation.
HD Voice is a significant step in the evolution of audio clarity and quality for telephony systems, one which can lead to greater customer satisfaction, as well as revenue opportunities for service providers. In comparison between HD Voice and traditional telephony audio, many people can distinctly hear a difference and the general sentiment is that HD Voice provides more of a feeling of "being in the same room" with the person on the other end of the phone line.
HD Voice Market Trends
Even though much of what we hear about these days in the communications industry revolves around wireless broadband, LTE, cool new tablets, and the ever increasing video usage on smart devices, it’s important to remember that voice services still play a key role overall. In fact, in 2012, it’s expected that wireless voice services will be 60% of wireless service provider revenue, and that by 2015, as the worldwide wireless service revenue approaches one trillion dollars, voice is still expected to generate over 50% of that revenue! So even though voice services are no longer seen as the next best thing, voice (and, therefore, voice quality) is poised to continue to be a critical measure for service provider success.
HD Voice Can Be A Significant Differentiator
HD Voice delivers higher quality voice transmissions by extending the frequency of range of traditional or narrowband voice calls (300 Hz to 3400 Hz) out to wideband audio ranges (50 Hz to 7000 Hz).
This creates a better overall experience for users because on the phone it:
- Makes it easier to recognize voices
- Makes it easier to distinguish the sounds of fricatives, such as s, z, and f
- Fades or cuts out background noise
- Provides more natural sounding speech
The improved quality encourages longer call durations, delivers a richer presence for conference calls and improves comprehension with people of different accents. In terms of automation, HD Voice provides a more accurate environment for voice recognition and speech detection.
Read our white paper, "The Growing Importance of HD Voice."
This white paper provides an introduction to HD Voice and discusses its current adoption rate and future potential, including use case examples which paint a picture that HD Voice upgrades to certain network and enterprise infrastructure will be seen as important, and perhaps as a necessity to many.