High definition voice is about audio quality much in the same way that HD on our televisions is about picture quality. How does high definition voice work, though, and why is it important?

Well, have you ever said any of these things while on a call:

“Hello, hello, hello, are you still there…”

“You’re breaking up there. Can you hear me? I can’t hear you…”

“I can’t really hear you – it sounds like you’re underwater…”

“Can you say that again as I didn’t really catch it – it’s a really bad line…”

You have probably said them all at some stage. High definition voice improves the quality of audio to reduce the probability of you being in the situations above again.

How Does High Definition Voice Work?

High definition voice uses wideband audio technology. In simple terms, this makes the audio on your voice call sound more like a real life voice.

Messenger apps and other platforms achieve high definition voice by increasing the frequency that voice calls are transmitted on and raising the number of audio samples per second.

High definition voice is transmitted between 50 Hz and 7kHz. You can follow the link if you want to find out more about what that means technically. From a user point of view, it is not only higher than standard audio, it is also closer to the frequency of our voices. When we speak in-person, our voices are usually in the range 80Hz and 14 kHz.

In terms of audio samples, high definition voice uses double the number of a standard call. This gives more detail, depth, and clarity to the audio.

The Benefits

So, what does this mean in practice? Here are the things you can expect when using high definition voice:

  • Less muffled– calls sound less muffled, and it doesn’t sound like the person you are talking to is underwater.
  • Easier to make out difficult to hear sounds– it is easier to make out sounds that are sometimes difficult to hear on standard quality audio. This includes “f” and “s” sounds.
  • Reduced background noise– there is less background noise making it more practical in real-life situations. After all, we are not always able to make calls in locations that are almost silent.
  • More life-like– the audio also sounds richer as well as being clearer. As a result, it sounds more like a voice when talking to someone in-person.
  • More consistent– calls are less likely to break up or drop.
  • Low volume voices are clearer– it is easier to hear low volume voices.
  • Easier to distinguish voices– it is easier to distinguish different voices too. This is particularly helpful when you are on a group call or conference call and you have multiple speakers who sometimes talk over the top of each other.
  • Easier to understand accents– again, this is particularly helpful when on group calls.
  • Listening is easier– so there is less need to really concentrate on the audio, leaving you to concentrate on the content

High definition voice is something you should consider as a minimum standard. After all, the voices you hear on a call should sound as close to an in-person conversation as possible.