KPN has a technique is activated to the sound quality of phone calls on smartphones to improve. HD Voice needs to vote more lifelike sound and background noise is suppressed by a higher frequency range.
Currently support approximately 36 different aircraft HD Voice. That includes approximately 20 percent of the total number of aircraft on the Dutch KPN network. KPN has 5.3 million customers, making it plausible that between one and one and a half million telephones, the technique support. Phones from Apple and BlackBerry are not. HD Voice also works with customers of its subsidiaries, Hi and Telfort.
KPN has already had tests done, but is now doing a big test. If both caller and the person called is a suitable device, capable of HD Voice automatically; it requires no adjustment in the settings, or other action of the user, says KPN.
HD Voice is a technology in which the voice with a wider frequency range on the network is sent. Due to the used bandwidth is required the technique that the user, via the 3g network calling. Although KPN claims that there is no adverse effect to the battery life, is in many places the range of 3g is less than that of gsm, ensuring that users in practice a difference can brands.
Due to the higher frequency range, the sound clearer sound and background noise is less audible. As a result, people with accents and people who are inarticulate talk easier to understand through the phone.
Many phones support the technology already, since providers in many European countries it already apply. After the large-scale test will be 150 clients were interviewed about their experiences, after which the technique a for the summer final must be entered. Despite earlier plans to make HD Voice a paid option, it says the provider now that the better quality the customer anything extra.
Update: According to various tweakers is the standard AMR-WB. KPN has now confirmed to Tweakers.net. Various mobile oses such as Android and Windows Phone, to support the codec, but the hardware and radio should also offer support for HD Voice. A second microphone is also actually necessary, ” says the provider. “This is because of the broader frequency range that is used even more unwanted ambient noise is included,” said spokeswoman Renske Algra of KPN.
Standard quality
HD Voice
Sound clip (standard_male.mp3)
Sound clip (hd_male.mp3)
Brand
Device support HD Voice
Samsung
Galaxy S II, Note, S Plus, Omnia W
Nokia
Lumia 800, Lumia 710, E6, 700, 300
HTC
Sensation-line, Desire Z, Desire S, Incredible S, Rhyme
Sony Ericsson
Xperia Arc, Neo, Play, Ray, Active, Arc S, Neo V, Live (all smartphones, 2011)
LG
Optimus Me, Optimus Black/White, Optimus 7.5, Prada Phone 3.0
Apple
No
BlackBerry
No
ZTE
Blade