Apple iPhone 5 Rolls Out HD Voice Support

By Doug Mohney September 12, 2012

Yes, the shiny new Apple iPhone 5 does indeed support HD voice ("cellular wideband audio" as Apple has dubbed it). "Over 20 carriers" will support HD voice at product launch, according to Apple.

It's a feature overseas carriers have been waiting for, but some questions remain as to the details on what networks HD voice will be supported – CDMA, HSPA+ and/or LTE.

The iPhone 5 certainly has the handset hardware to support a kicking HD voice (and music playback, for that matter) experience. New audio features on the phone include a beam-forming directional microphone system for higher quality sound. 

There are three (3) microphones built into the iPhone 5 – a feature/trick that you've only previously seen on higher-end room-sized conference speaker phones from folks like Polycom. 

The iPhone 4 and 4S, as well as many higher-end Android smartphones, have two (2) microphones to help with echo cancellation and background noise filtering; adding a third mic for better sound processing goes under the "Brilliant idea – why didn't I think of it?" category.

Speaking of sound processing, I'm going to assume Apple rolled in Audience's earSmart sound processing algorithms directly onto the A6 chip. Apple had incorporated an Audience earSmart chip into the iPhone 4 and then licensed and integrated the earSmart technology onto its A5 chip with the release of the iPhone 4 S.

Putting the technology directly onto the phone CPU cuts down on part count (cheaper) and helps save power (less energy, powering multiple parts).

Apple now supports LTE, so it should be a given that Voice over LTE (VoLTE) and AMR-WB is supported. And if you're supporting the AMR-WB wideband codec, you can support HD voice on 2G GSM and 3G HSPA networks around the globe that already have HD voice service turned on.

Does Apple support Qualcomm's 3G CDMA EVRC-NW codec (Well, does Apple support 3G CDMA)? We'll have to wait to get more details on Sprint's iPhone 5 configuration when sales start, but I wouldn't be surprised at either "yes" or "no" at this point. 

About the only truly unanswered question is if Apple will support HD voice on older model iPhones through the iOS 6 release, specifically GSM/HSPA+ network iPhone 4 and 4 S models. Both earlier models have the embedded hardware to support HD voice, as noted above.

I suspect both Apple and mobile carriers will keep HD voice an iPhone 5 "exclusive" feature to tempt/push users to upgrade to the latest and greatest hardware – and locking them into a new contract term.




Edited by Braden Becker

Contributing Editor

SHARE THIS ARTICLE
Related Articles

Verizon Needs Tough Love on Copper Policies

By: Doug Mohney    1/29/2015

New regulation on broadband and telecommunications providers is at top of mind here at ITEXPO. Jeff Pulver, founder and chief executive of pulver.com …

Read More

OTT Video Set to Top $6 Billion in 2019

By: Tara Seals    1/29/2015

When it comes to over-the-top (OTT) video, it has grown not only in developed regions but also in emerging markets, both as an alternative and complem…

Read More

Digium CEO: Businesses at Every Level Can Get Started with UCaaS

By: Allison Boccamazzo    1/29/2015

Digium CEO Danny Windham made one thing clear during his keynote presentation at ITEXPO 2015: Businesses of all kinds, at every developmental level, c…

Read More

When Gaming Isn't a Game: 3 Best Practices to Protect Your Hosting Service Against DDoS Attacks

By: Joe Eskew    1/28/2015

The unprecedented number of security breaches, hacks and DDoS attacks on gaming communities, software manufacturers and even Hollywood studios grew to…

Read More

No Hackers Took Down Facebook; Hour's Outage Mostly Internal

By: Steve Anderson    1/28/2015

Facebook released a statement not long after the outage had hit, revealing that the cause of the shutdown was not "...the result of a third-party atta…

Read More