HD-Voice support ? - Xiaomi Redmi Note 4 Questions & Answers

Does anybody know if RN4 esp. Mido/Snapdragon variant supporting HD Voice (Audio-Codec AMR-WB) or maybe even HD Voice+ (Audio-Codec EVS) for telephony/calls ?
The question arises if this is supported by hardware and which ROMs support this ?

der_Kief said:
Does anybody know if RN4 esp. Mido/Snapdragon variant supporting HD Voice (Audio-Codec AMR-WB) or maybe even HD Voice+ (Audio-Codec EVS) for telephony/calls ?
The question arises if this is supported by hardware and which ROMs support this ?
Click to expand...
Click to collapse
If you are brave: http://en.miui.com/forum.php?mod=viewthread&tid=622620&page=1&authorid=149467232
Dont ask me why it's disabled, this phone is truly "made in China". (fun fact: HD Voice works on MTK variant)
You can try to just add "ro.ril.enable.amr.wideband=1" in build.prop but i dont think it's gonna do anything.

I found out that VoLTE uses either AMR-WB or EVS codec. So if VoLTE is working it should use HD voice.
This hack is for HD voice over 2G/3G

der_Kief said:
I found out that VoLTE uses either AMR-WB or EVS codec. So if VoLTE is working it should use HD voice.
This hack is for HD voice over 2G/3G
Click to expand...
Click to collapse
VoLTE works, but it has nothing to do with HD Voice (which is 3G technology), VoLTE is LTE technology.
If VoLTE doesn't work for you then you better contact your sim carrier.

Related

[Q] Is there any kitkat ROM that supports call recording & FM radio ??

I really need a ROM that supports call recordings
Any help ?
yousefageaz said:
I really need a ROM that supports call recordings
Any help ?
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Click to collapse
Call recording and radio app (spirit fm) are available in play store.
RazorMC said:
Call recording and radio app (spirit fm) are available in play store.
Click to expand...
Click to collapse
the spirit fm works well
thanks
but which call recording app you mean ??
I tried a lot of them but none seem to be working
yousefageaz said:
the spirit fm works well
thanks
but which call recording app you mean ??
I tried a lot of them but none seem to be working
Click to expand...
Click to collapse
I'm sorry, I don't use call recording so I'm not sure which one works well.
I guess there was an exposed module that enables call recording. Wanam xposed maybe.
RazorMC said:
I'm sorry, I don't use call recording so I'm not sure which one works well.
I guess there was an exposed module that enables call recording. Wanam xposed maybe.
Click to expand...
Click to collapse
Thanks for help

Any ROM supporting native video (VoLTE video ) calls?

Hello, Im looking for a ROM which supports Volte video calls natively, as Im using Jio as a primary number, and couldn't find any ROM yet. Please help if you know about any such ROM

Does VoLTE REALLY works ?

Does the leMax2 really support VoLTE, beyond the specification we can see on internet ?
Actually, I’ve never made a VoLTE call with this phone. The HD or LTE icon never appears, and I never make a call with the crystal clear VoLTE sound with this phone.
I’ve tested with SmallEUI 23S, CUOCO 23S, as well as several nougat rom which should support VoLTE (RR, AOSIP…).
I had a Vernee Apollo Lite phone before this one, which allow me to make VoLTE call, so I can confirm that my carrier support this techno.
So, for whose can make call with VoLTE, do you have a icon skowing that you are on VoLTE ? Do you really ear a better sound (the sound of a call is dramatically different between an VoLTE call and a standard call) ?
Thanks.
depends on your telecom /networkprovider, even here in germany E-Plus no VoLTE ^^
derulf said:
depends on your telecom /networkprovider, even here in germany E-Plus no VoLTE ^^
Click to expand...
Click to collapse
Hi,
Sure. It depends on the provider.
But I had an Apollo lite before (I change my phone, not my provider), and the VoLTE worked. Everytime I made a volte call, there was a HD icon display in the dialer (Android stock dialer), and the quality of the sound was just fabulous.
Never had any particular notification on the lemax2, neither a HD quality during my call. And I make the test by calling another person who has the same provider, as well as a volte compatible phone.
I am using small eui.
When I make a call the phone stays on LTE so volte works for me.

Question How to enable call recording on the Samsung Galaxy S23 Ultra in EU?

Hey, is there any way to enable call recording on S23U without rooting or changing CSC? Maybe with adb? Regards
The call recording app from skvalex works perfectly fine without root or changing csc on my US variant and you can get it on the play store or on fdroid
spart0n said:
The call recording app from skvalex works perfectly fine without root or changing csc on my US variant and you can get it on the play store or on fdroid
Click to expand...
Click to collapse
Sounds interesting, how is the loudness for both voices ? I ask because many recording solutions I tried record your own voice just fine, but the other side is barely audible in the recordings....
As to the OPs question: I presently have changed my CSC from EUX to SEK (INS is also possible) and have native call recording .... more info is in this thread
Duplicate Post sorry
s3axel said:
Sounds interesting, how is the loudness for both voices ? I ask because many recording solutions I tried record your own voice just fine, but the other side is barely audible in the recordings....
As to the OPs question: I presently have changed my CSC from EUX to SEK (INS is also possible) and have native call recording .... more info is in this thread
Click to expand...
Click to collapse
I hear both sides just fine at roughly the same volume. Let me find a not personal recording and I'll post it for you to listen if you want to.
link to gdrive
Does this work over bluetooth?
stondec100 said:
Does this work over bluetooth?
Click to expand...
Click to collapse
Should. I haven't tested it though
what is the argument against a csc change?
By changing CSC, you will only gain. Skvalex and all similar ones record through a microphone; by changing CSC, you will achieve native recording, which is of the highest quality.
spart0n said:
The call recording app from skvalex works perfectly fine without root or changing csc on my US variant and you can get it on the play store or on fdroid
Click to expand...
Click to collapse
Seems not available for me in the play store, also call recording is not available in one ui on my phone, does this matter? Because I believe currently there is no app that can record audio correctly IF the call recording feature is disabled because of country laws.
andQlimax said:
Seems not available for me in the play store, also call recording is not available in one ui on my phone, does this matter? Because I believe currently there is no app that can record audio correctly IF the call recording feature is disabled because of country laws.
Click to expand...
Click to collapse
You get the actual call recording app from fdroid not the playstore. And in my country (us) call recording is disabled through CSC but this app has always worked for me. The app I mentioned from the playstore is the pro unlocker app that will unlock extra features like cloud backup but call recording is completely free
andQlimax said:
Seems not available for me in the play store, also call recording is not available in one ui on my phone, does this matter? Because I believe currently there is no app that can record audio correctly IF the call recording feature is disabled because of country laws.
Click to expand...
Click to collapse
Download
callrecorder.skvalex.com
spart0n said:
You get the actual call recording app from fdroid not the playstore. And in my country (us) call recording is disabled through CSC but this app has always worked for me. The app I mentioned from the playstore is the pro unlocker app that will unlock extra features like cloud backup but call recording is completely free
Click to expand...
Click to collapse
Found it thanks. It uses the microphone and not native recording obviously, but I will try thanks.
Hmmm im so confused now.
I stay in Malaysia, i need samsung pay to be working, which csc i should change to?
Or the best csc of all time everything enabled
stondec100 said:
Does this work over bluetooth?
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Click to collapse
Beware of wifi calling. No recording
Edit

Does the S10lite(snapdragon) support EVS codec?

easy check is to download Device Info HW and look at the CODECS submeny for anything like OMX.qcom.evs OMX.google.evs c2.android.evs
borisSweden said:
easy check is to download Device Info HW and look at the CODECS submeny for anything like OMX.qcom.evs OMX.google.evs c2.android.evs
Click to expand...
Click to collapse
If you mean VoLTE, then yes, Galaxy S10 Lite includes this support. The open question, however, is whether your sim's carrier will allow the use of VoLTE on this phone.
ze7zez said:
If you mean VoLTE, then yes, Galaxy S10 Lite includes this support. The open question, however, is whether your sim's carrier will allow the use of VoLTE on this phone.
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Click to collapse
Not VoLTE, its the media format the voice is broadcasted. VoLTE in many phones uses the old AMRWB like 3G and GSM voice calls. The bitrate sucks and people dont use their tech to thefullest because of BS patent fees. VoLTE only guarantees data during calls, not quality.
Would be nice with a screenshot. If it exist then porting it to other Snapdragon phones be possible
For the sake of clarity what this discussion is about:
VoiceAge - Enhanced Voice Services (EVS) codec
he new codec for Enhanced Voice Services (EVS), successor of the current mobile HD voice codec AMR-WB, was standardized by the 3rd Generation Partnership Project
voiceage.com
Enhanced Voice Services - Wikipedia
en.wikipedia.org
ze7zez said:
For the sake of clarity what this discussion is about:
VoiceAge - Enhanced Voice Services (EVS) codec
he new codec for Enhanced Voice Services (EVS), successor of the current mobile HD voice codec AMR-WB, was standardized by the 3rd Generation Partnership Project
voiceage.com
Enhanced Voice Services - Wikipedia
en.wikipedia.org
Click to expand...
Click to collapse
Yes but was a simple question, do you have the phone can you check if the transcoder exists?
borisSweden said:
Yes but was a simple question, do you have the phone can you check if the transcoder exists?
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Click to collapse
The name of the codec may not matter at all, because "The GSMA has nominated EVS as the mandatory audio codec for superwideband transmissions via VoLTE (please also see "Permanent Reference Dokument IR.92 - IMS Profile for Voice and SMS")."
ze7zez said:
The name of the codec may not matter at all, because "The GSMA has nominated EVS as the mandatory audio codec for superwideband transmissions via VoLTE (please also see "Permanent Reference Dokument IR.92 - IMS Profile for Voice and SMS")."
Click to expand...
Click to collapse
It's still not used, even if I force it though efs modding, I still don't get clear calling. So I zeroed in on the lack of transcoder module in the OS. Why I picked Samsung was because they get special treatment from Qualcomm so Exynos doesn't ge tused in the USA.
To get EVS, OEMs pay patent fee and many don't do that so porting it is. Here is my phone, asypu can see,no software transcoder for EVS.
I understand your dissatisfaction about the lack of EVS FB for your device. IPhone has had it for a long time. For the record, the EVS support standards used are highly variable for network operators.
EVS is available in four variants:
Narrowband (NB) - frequency response 300Hz - 3.4kHz. The quality of classic telephony, corresponding to the AMR-NB codec,
Wideband (WB) - frequency response of 50Hz - 7kHz. Quality corresponding to the AMR-WB codec, or classic HD Voice,
Super-wideband (SWB) - frequency response of 50Hz - 16kHz,
Fullband (FB) - frequency response of 20Hz - 20kHz. Full bandwidth of human audible frequencies.
Probably every 5G smartphone should support EVS FB, provided that the network operator implements it for a specific device model.
As of today, in my country no operator has implemented EVS FB for android phones. They only support EVS SWB.
Source
ze7zez said:
I understand your dissatisfaction about the lack of EVS FB for your device. IPhone has had it for a long time. For the record, the EVS support standards used are highly variable for network operators.
EVS is available in four variants:
Narrowband (NB) - frequency response 300Hz - 3.4kHz. The quality of classic telephony, corresponding to the AMR-NB codec,
Wideband (WB) - frequency response of 50Hz - 7kHz. Quality corresponding to the AMR-WB codec, or classic HD Voice,
Super-wideband (SWB) - frequency response of 50Hz - 16kHz,
Fullband (FB) - frequency response of 20Hz - 20kHz. Full bandwidth of human audible frequencies.
Probably every 5G smartphone should support EVS FB, provided that the network operator implements it for a specific device model.
As of today, in my country no operator has implemented EVS FB for android phones. They only support EVS SWB.
Source
Click to expand...
Click to collapse
Its a weird standard, even 23bit AMR-WB is hard to come by.
My OnePlus 7T calling iPhone XS and 11-14 does get EVS after the hack according to NSG.
But calling Iphone 8, 7, 6S gives me AMR-WB on the lower levels.
VoLTE is nearly snakeoil and I dont want to pay for 5G as coverage is null and carriers increase the price of the plans. I deliberately picked the 7T secondhand as I didn't believe in the 5g hype.
Like I said before, it's free for th carrier's to implement EVS while it costs money for OEM to enable it on the handset. It's like Bluetooth codec decoders.

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