Dolby Audio on LOS or RR? - ZTE Axon 7 Questions & Answers

Guys, i want to use LOS or RR which i like the most when compared to Stock. But I don't want to compromise on Audio quality which is a Axon 7's Awesome feature. My question is " Are we missing the Audio quality? or is that on par with Stock? "
Please let me know if we have any another work around to have the better audio

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What's the status of sound optimization for custom ROMs?

A big reason I got this phone was the audio experience.
Now, I'm using LineageOS (as it seems most are) and I'm wondering about how its audio quality compares to that of stock.
From what I can tell, it's not using Dolby Atmos as stock does, and I'd like to have that. But, I'm not really sure of anything beyond that. Any chance we can add that in custom, non-stock ROMs?
What else is there we can do? It just doesn't sound the same.
MelloZ said:
A big reason I got this phone was the audio experience.
Now, I'm using LineageOS (as it seems most are) and I'm wondering about how its audio quality compares to that of stock.
From what I can tell, it's not using Dolby Atmos as stock does, and I'd like to have that. But, I'm not really sure of anything beyond that. Any chance we can add that in custom, non-stock ROMs?
What else is there we can do? It just doesn't sound the same.
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The stock audio is the BEST, loudest, and clearest sounding phone experiences I've ever heard. Blows away any of the earlier HTC M7-M9, as well as the Moto X Pure/Play.
LoS has issues with the audio... It's not stereo, it's distorted unless turned down fairly low, but I think it's ok using headphones/ear buds?
About the only solution to cure the distortion is to turn the gain down using Viper4Android, or ARISE (which has V4a). It also has a great EQ, some like better than Dolby Atomos, but I prefer the Dolby Atmos. ARISE has a Dolby add-on, but not sure it works?
https://forum.xda-developers.com/android/software/r-s-e-sound-systems-auditory-research-t3379709
I tried this with AOKP, but I use the speakers too much and they still distorted or were really low with no distortion. So, back to Stock-ROOTed Nougat for me.

Internal Speaker Sound with Stock Rom and Lineage OS 15.1

I have two Le Pro 3 phones here, one has Lineage OS 15.1 and the other one is out of the box with stock rom. So it is very easy for me to test the sound for both roms at the same time.
I know already that stock rom offers the best audio quality with the built in internal spakers. Stock rom offers fuller and richer sound with also more bass with the internal speakers. There is no chance to have similar sound with the internal speakers using a custom rom without using any audio mods like dolby atmos or viper.
But even using these sound mods I was not able to tune the sound of the speakers similar to stock sound.
I made some longer sound tests with both phones and found that there is one big difference between stock and custom rom:
As the phone has Stereo speakers (upper one and lower one), the eqalization of both speakers is totally different with stock. While the upper speaker offers much more mid-range frequencies and nearly no highs the lower one is giving much more bass and high frequencies but nearly no mids. This effect is present with and without activated dolby atmos in stock rom.
So it seems to me that the stock rom uses different settings for left (upper) and right (lower) speakers. With headphones, both channels offer same sound, of course.
Using Lineage OS 15.1 without any sound mod, both speakers offer very similar sound characteristic. I am not able to hear different equalization between upper and lower speaker. The upper one has the same amount of highs, mids and lows like the lower one.
By using dolby atmos or viper, the sound quality improves impressingly but this effects both speakers in the same way.
Maybe becouse of this difference there is no chance to have the same sound characteristic with the speakers like in stock rom.
And maybe this info could help someone to imrove speaker-sound with lineage?
Hi @walking-desaster , maybe you can give the MIUI Ares ROMs a try and compare the sound quality.
This ROM are based on a clone of the X720 (Cool Changer S1 with JUI ROM) and should use similar or updated drivers with Nougat and MIUI 9 on top.
The ROM is posted both on 4PDA and by @tsongming in his Megadrive.
I am not sure why the version posted by Alex_Agir is different from Tsongmings megadrive, maybe he can explain.
Would be interesting to learn your experience.
Wortelstok said:
Hi @walking-desaster , maybe you can give the MIUI Ares ROMs a try and compare the sound quality.
This ROM are based on a clone of the X720 (Cool Changer S1 with JUI ROM) and should use similar or updated drivers with Nougat and MIUI 9 on top.
The ROM is posted both on 4PDA and by @tsongming in his Megadrive.
I am not sure why the version posted by Alex_Agir is different from Tsongmings megadrive, maybe he can explain.
Would be interesting to learn your experience.
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There is no difference between the Rom Alex_Agir and the one on my Megadrive and I gave him credit.
I posted the file on the megadrive and will soon add it to AFH as well. Just to make it easier to get to. Alot of people use browser that do not translate sites as 4PDA very well. Plus, the Megadrive link includes additional addon, to enhance the MIUI Ares ROM, and to make installation quicker for someone new to Miui.
Like @walking-desaster, I am a big fan of audio.
In fact for me, as a hobbyist recording musician, its usually the most important aspect of my phone. But, I too have multiple Leeco's ( four) so its easy to tryout everything. Plus, I still have my old iPhone, which I use like an iPod for my car.
I agree that stock EUI sound is far superior, and modded EUI's out there seem to be just short of the stellar sound offered by stock. but its close. My issue with stock is that its using marshmallow, which I can't stand.
The Miui Ares rom has the best sound quality of any Rom that I have used since stock. To go on Stock sounds better with Dolby and custom Roms sound better with Dolby. Both sound better with Viper.
Viper is better than Dolby because it has all of the same tools. such as EQ and compression but takes it a step further with the option of being able to add profiles. The profiles include packets of .irs files. Which are convolution reverb impulses ( which are actual acoustic measurements of rooms or speakers) these convolution files allow you to simulate the sounds of room reverb and speaker acoustics. They are similar the impulse responses used in electric guitar amps and headphone emulators.
You can download profiles from my Google drive: https://drive.google.com/open?id=1KtNtBOw1Hj7Rw4OVT2wWdE1ujDAZgo9x
or better yet use these instead
Use the profiles from my drive but use impulse files from sites such as these : https://forum.xda-developers.com/showthread.php?t=2372750
Note, you have to manually add the profiles here: storage/Viper4Android/
BTW, were you aware the Leeco CDLA headphones has a DAC chip and use Dupont speakers?

Question, sound quality on STOCK vs Custom.

Hey
Is it true that ZTE Axon 7 sound quality better on STOCK 7.1.1 than on custom LineageOS 14.1? Custom rom doesn't use the full support AKG chip?
I bought this phone only because of the great DAC, amplifier, speakers, Dolby Atmos and official LineageOS support, but if the custom Roma has worse sound quality than STOCK rom then I will have to return to the SPYING Google-Stock-****... but sound quality is more important than privacy...
(I apologize in advance for my weak English)
speaker quality little better on stock but headphone quality same i think.
atakan33 said:
speaker quality little better on stock but headphone quality same i think.
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Based on my experience i can say the same. AEX is the only custom rom i've used though, but i believe the story is the same with the other roms

Best ROMs for audio or stock is good help guys

Hey guys hope your zte axon 7 is still rocking ,well I am using my axon 7 for last 3 year and after a battery replacement it's now as good as new never tried custom ROMs coz of audio performance but now I want to try new ROMs for speed but can't compromise with audio quality can any one help me out choosing rit custom ROMs .thanx in advance
I don't know if there is a huge difference in sound between custom roms.
Mostly, it depends on equalizer like Dolby Atmos, V4A, JamesDSP, DTS:X etc.
But, there's a catch in custom rom, they use high quality dac on headphone and you can't switch it back to standard dac. I have one pair of headphone which sounds a little bit worse on High Quality mode than on Standard Quality. Don't know why and I really don't care that much.
Personally, I prefer Viper4Android to Dolby Atmos, due to many options in V4A, which let you fit - let's just say - to your sound preference.
I only miss surround virtualization from Dolby Atmos for movies.
I tried several Surround IRS but didn't found anything worth.
Using unofficial Lineage OS 15.1 (from Unjustified Dev), Bladder Kernel with Viper4Android 2.6.0.5 (using this version due to conflict between Selinux Enforced and Convolver).
Speaker Optimization sounds pretty bad, I recommend to try some of IRS for Convolver.
That one below, sounds pretty, it even gives nice bass but it didn't work on V4A 2.7.0.0 and doesn't sound same on JamesDSP like on older V4A.
Edit: Just be aware of volume, some of IRS may be louder than original volume and may damage your speakers.
klałn said:
I don't know if there is a huge difference in sound between custom roms.
Mostly, it depends on equalizer like Dolby Atmos, V4A, JamesDSP, DTS:X etc.
But, there's a catch in custom rom, they use high quality dac on headphone and you can't switch it back to standard dac. I have one pair of headphone which sounds a little bit worse on High Quality mode than on Standard Quality. Don't know why and I really don't care that much.
Personally, I prefer Viper4Android to Dolby Atmos, due to many options in V4A, which let you fit - let's just say - to your sound preference.
I only miss surround virtualization from Dolby Atmos for movies.
I tried several Surround IRS but didn't found anything worth.
Using unofficial Lineage OS 15.1 (from Unjustified Dev), Bladder Kernel with Viper4Android 2.6.0.5 (using this version due to conflict between Selinux Enforced and Convolver).
Speaker Optimization sounds pretty bad, I recommend to try some of IRS for Convolver.
That one below, sounds pretty, it even gives nice bass but it didn't work on V4A 2.7.0.0 and doesn't sound same on JamesDSP like on older V4A.
Edit: Just be aware of volume, some of IRS may be louder than original volume and may damage your speakers.
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Click to collapse
I have very similar set now with latest unoff. Lineage, with beta baddar kelner, viper fx with xhr soundplus convolver, musicfx + removed audiofx, gcam 6.1.021 and etc.
I am quite satisfied with the sound and experience which i have from adwanced tweaking

Overall better audio mod on S8?

Hi everyone,
What do you think it's the best mod (or the best pack of mods) to improve Galaxy S8's speaker?
I'm currently using a stereo speaker mod and V4A with Dolby Sound Logic Pro II irs profile, without Dolby Atmos (I'm on LOS) and, tbh, I'm pretty happy with this configuration.
Just wanted to know if there's a better irs profile to apply on V4A for listening music, or some other module or mod to further improve the sound experience.
Thanks everyone!
Rokcy98 said:
Hi everyone,
What do you think it's the best mod (or the best pack of mods) to improve Galaxy S8's speaker?
I'm currently using a stereo speaker mod and V4A with Dolby Sound Logic Pro II irs profile, without Dolby Atmos (I'm on LOS) and, tbh, I'm pretty happy with this configuration.
Just wanted to know if there's a better irs profile to apply on V4A for listening music, or some other module or mod to further improve the sound experience.
Thanks everyone!
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Pretty much right on. Pretty much what I use too
What's the difference between V4A FX Legacy and V4A XHiFi and what's the best for you ?
EDIT : Seems XHiFi is discontinued so I got my reply

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