Stereo sound mod wanted - Xiaomi Redmi 4X Questions & Answers

I've seen stereo sound mods for other xiaomi and oneplus phones with one speaker. These mods make use of earpiece as of second speaker allowing for having dual channel audio. Is it possible to create or port such mod for redmi 4x?

The project was tried before for our device and failed. It was reported that, maybe due to limitations in kernel and/or low-end device specifications.

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Bluetooth audio

When I use my OP3T with a cable the audio is excellent. When i pair it with a Bluetooth device the audio is not great, the bass volume is low and the high frequencies are too sharp. This is the case both with a BMW audio system and the bose QuietComfort 35. When is use an equalizer it gets better but not great. When an iphone is paired with the Bose headphones the quality of the sound is way better, without an additional equalizer. The ROM I had installed was Oxygen 4.1.x and the beta 9 update aswell (both the same quality). On forums I have read many people with the same problem but without a solution. Does anybody here has a solution for this problem?
Thanks in advance!!
Solution is : get an apt-x enabled device, wait for android to include apt-x or use A.R.I.S.E. sound systems
empulse92 said:
Solution is : get an apt-x enabled device, wait for android to include apt-x or use A.R.I.S.E. sound systems
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Thank you for your reply, i had already used some playstore equalizers, but A.R.I.S.E. is on a whole other level. Everything is working perfect now. Thank you!

enable Nokia Dolby Atmos / Sound Enhancement

Since Nokia has stopped applying any sound enhancement to their phones and because the normal 3.5mm output is of much lower volume than other phones or even USB-C to 3.5mm,
has anyone yet tried to apply Dolby Atmos / Sony Xperia Sound processing to their phones?
Collective Dolby AtmosĀ® Port Thread [Unity]
[AOSP,RR,LOS] [L,MM,N,O] [ALL DEVICES] SONY XPERIA XZ2 SOUND PROCESSING AND LiBS PORT
I think it requires root and custom recovery. I really want to use these too. In this regard i miss my redmi note 4.

Somethings Related to Dolby Atmos in Prop File

Hello everyone, I know that some Nokia devices have Dolby Atmos EQ. However, I wondered about whether Nokia 8 had Dolby Atmos before I bought this phone. When I bought this device, I couldn't find anything about Dolby.
Several days later, today, i have found something about Dolby. I installed a terminal app called Qute. I entered prop command called "getprop". It is bottom of output. If you scan carefully, you will be able to realize something(s) about Dolby. I can't share screenshot due to I'm new user here. I'm using my device with Android 8.1. I'm waiting your comments. Thanks to look this thread.
i dont know why nokia 6 has dolby and nokia 8 dont
felipondrioxcl said:
i dont know why nokia 6 has dolby and nokia 8 dont
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Absolutely, I agree with you. Even though Nokia 8 is a flagship phone, 8 hasn't Dolby Atmos. However, I have found a signature.
I have been scanning some root directories with some terminal commands (vendor,bin,lib, framework, etc...) but I couldn't any file related to Dolby. Briefly there is a signature but there isn't any file. I am not sure exactly. I hope Nokia brings Dolby Atmos to Nokia 8 next update.
I'm assuming that the Nokia 8 might not be designed for Atmos in the first place.
I said that because of the case of laptops with Dolby Atmos anyway. Some of those laptops are designed with Dolby's input during the design process to give a good sounding system, things all down to the speaker drivers and placements. So not only just the software, but the hardware both work together to give decent sound output. Not sure if that's the case on phones.
The Nokia 6's earpiece acts as a one of the channels for the stereo speaker setup on the phone. Which obviously was not there on the Nokia 8.
But on the 8, one of the microphone's for the OZO surround sound recording is at the earpiece area. But I don't see why a more powerful speaker driver in the earpiece for stereo sound and the OZO mic can't fit in the same spot.
Either way, the Nokia 6.1 dropped Dolby Atmos entirely and went with a single speaker setup.
Germ2501 said:
I'm assuming that the Nokia 8 might not be designed for Atmos in the first place.
I said that because of the case of laptops with Dolby Atmos anyway. Some of those laptops are designed with Dolby's input during the design process to give a good sounding system, things all down to the speaker drivers and placements. So not only just the software, but the hardware both work together to give decent sound output. Not sure if that's the case on phones.
The Nokia 6's earpiece acts as a one of the channels for the stereo speaker setup on the phone. Which obviously was not there on the Nokia 8.
But on the 8, one of the microphone's for the OZO surround sound recording is at the earpiece area. But I don't see why a more powerful speaker driver in the earpiece for stereo sound and the OZO mic can't fit in the same spot.
Either way, the Nokia 6.1 dropped Dolby Atmos entirely and went with a single speaker setup.
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Nokia 8 has only one speaker, i agree with that. We can't hear some sound effects with only one speaker. Besides, headphones support more effects than only one speaker. At least, sound effects can be better for headphones. Also internal EQ (Music FX) settings are available for only music apps; not YouTube, video players or games. At least, Music FX can support other apps.

Has the Red Magic 3 a dedicated audio DAC ?

PowerAmp and Neutron show selectable options for Hi-Res audio,so I assume that the device is capable for Hi-Res output.
The Red Magic 3 also supports DTS:X/DTS 7.1 and 3D Sound technologies out of the box.
However,unlike with the ZTE Axon 7 release,there's nothing to find on the www about the Magic 3 having a seperate DAC for it's advanced audio stuff....
Does anyone knows if the device has a dedicated auidio DAC ?
you can enable DTS when headset connected, under sound effects
em90256 said:
you can enable DTS when headset connected, under sound effects
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That's the Chinese room though, correct?
Mountainmohawk said:
That's the Chinese room though, correct?
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yes
That setting is not available on the EU rom......but anyway,also the Chinese rom doesn't show if there's a seperate DAC for Hi-Res audio...
From what I can tell it has an amazing headphone amp and is using the stock Qualcomm dac.
If only the stock Qualcomm DAC is used for audio processing,Qualcomm did a great job with this little piece of hardware,as the sound quality is outstanding,even when compared to my Axon 7......
I've written to support asking that same question, will come back here if and when I get an answer.

External headsets / microphones sound very bad + very low output ?

I tried to use an external headset in discord yesterday. Two different ones actually.
And I'm very dissapointed of the input quality. Now I'm wondering if I'm the only one with this issue or if theres something wrong with ColorOS or even the device itself?
I do know that my headsets sound perfectly fine on a Mi 9T Pro, but on my X2 Pro absolute garbage + it is very quiet for the other person.
I'd really appreciate if you guys could test an headset / external mic on your device while using discord or any other voice application and give some feedback about the microphone quality.
This is such a downer for me. Besides many other things right now... ?
Sorry, I only have hifi-headpones. No Headset.
But have you tried disabling the Dolby Atmos in the Audio settings, maybe that helps?

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