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Thread: EVS-SWB vs AMB-NB??

  1. #1
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    EVS-SWB vs AMB-NB??

    As far as these two audio codes are concerned, is one better than the other? I thought I read somewhere that EVS is the better/newer one. Does AT&T use EVS? Does the phone need required equipment to use EVS? I see in my service menu it shows AMB-NB when I'm on a call. Name:  Screenshot_20200212-090806_Service%20mode%20RIL.jpeg
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    Quote Originally Posted by shortyd999 View Post
    As far as these two audio codes are concerned, is one better than the other? I thought I read somewhere that EVS is the better/newer one. Does AT&T use EVS? Does the phone need required equipment to use EVS? I see in my service menu it shows AMB-NB when I'm on a call. Name:  Screenshot_20200212-090806_Service%20mode%20RIL.jpeg
Views: 335
Size:  36.7 KB

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    EVS is the newer technology! But I’m going to be honest, I’ve used both I don’t notice to big of a difference specially since Verizon to ATT are HD voice calls anyway. Now, if you call T-mobile customer that’s another story and it’s more than likely not the issue on you’re end lol


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    AMR 12.2 is a standard phone call, like one you’d make to a Sprint or T-Mobile customer, at least if the connection isn’t clear. AMR-WB 12.65 is a typical HD call, and EVS is the new HD codec, allowing for theoretically clearer sounding calls and more efficient use of bandwidth.


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    Oh ok. So to the human ear sound might negligible be better with EVS but the real benefit is better efficiency use on the network.

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    Wideband codecs will sound better if enabled end to end. If you're using a SWB codec but the other party is using NB, it won't make a difference.
    Want to learn more about how LTE works?
    https://productioncommunity.publicmo...ls/td-p/130581

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    Quote Originally Posted by shortyd999 View Post
    As far as these two audio codes are concerned, is one better than the other? I thought I read somewhere that EVS is the better/newer one. Does AT&T use EVS? Does the phone need required equipment to use EVS? I see in my service menu it shows AMB-NB when I'm on a call.

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    Really cool article all about HD Voice and EVS, with sound sample comparisons. https://www.pcmag.com/how-to/how-to-...s-sound-better
    https://en.m.wikipedia.org/wiki/Enha...ces#Technology

    The phone requires support of the EVS codec, (might have to be a carrier branded model), the phone on the other end of the call has to support EVS, and I do believe AT&T does support EVS. Verizon supports EVS and I believe interoperability with AT&T. If on an EVS call you might see an HD+ icon. Also, here’s a thread all about EVS. https://www.howardforums.com/showthr...Services-(EVS)

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    Quote Originally Posted by DebiLee View Post
    Really cool article all about HD Voice and EVS, with sound sample comparisons. https://www.pcmag.com/how-to/how-to-...s-sound-better
    https://en.m.wikipedia.org/wiki/Enha...ces#Technology

    The phone requires support of the EVS codec, (might have to be a carrier branded model), the phone on the other end of the call has to support EVS, and I do believe AT&T does support EVS. Verizon supports EVS and I believe interoperability with AT&T. If on an EVS call you might see an HD+ icon. Also, here’s a thread all about EVS. https://www.howardforums.com/showthr...Services-(EVS)
    So att does support it. Is that market base?

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    Quote Originally Posted by shortyd999 View Post
    So att does support it. Is that market base?

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    That I’m not sure about. Ask in that EVS thread and hopefully someone here or there can give a definite answer. A number of AT&T customers post in there.

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