Pie Roms with working hi-res(24bit) audio playback - Xiaomi Redmi 4X Questions & Answers

Hi guys, could u tell me which latest AOSP pie roms have hi-res audio playback working? I tried using some of the recent ones but audio out is limited to 16bit 48kHz, so rolled back to the 9th dec release of arrow OS, which doesnt have this problem. You could check if hi-res playback is working or not using poweramp, and selecting Hi-res output for wired headset in Settings<Audio<Output. Thanks

Hi. Tested it for you with Baikal OS. It seems to work?!!

Related

[Q] Video Player with Audio offset?

When I watch video with bluetooth headphones, there is an audio delay from the bluetooth that puts the audio/video out of sync. On my old Palm Centro, TCPMP had a setting where you could adjust the audio offset, which came in handy for this.
Does anyone know of an Android video player app that has this feature? So far, I have not been able to find one.

No playback through bluetooth headset while recording with mic

I have a Moto G X1032 running lollipop 5.1 and Cyanogenmod. I'm using Mpow Swift headphones with integrated mic. I've tried several free Bluetooth compatible recording apps, and I've used Rocketplayer, Bluetooth Music Player Free and ES Music Player (packaged with ES file manager).
While recording with the Bluetooth mic, any audio i play comes through my phone speakers not the headphones. Cyanogenmod's default music player won't play the audio files to begin with.
I see some recording apps offer background recording, but as i have successfully recorded while using my phone for other tasks i doubt that's the issue.

How to enable bluetooth audio codec "aac" on note 5 without a custom rom.

Hello guys,
I have a Note 5 and want to listen to music via my Bose QC 35 II. As these headphones only support SBC, which is quite basic and the slightly better AAC codec, no Aptx streaming is possible. It is sad that the good sounding aptx is not available, so i wanted to get the best out of it and try to listen with the aac codec. Unfortunately, it is only possible to manually change the bluetooth codec in Android Oreo. Is there a way be it an additional app or similar actions to manipulate the bluetooth audio codec even in Android Nougat?
Thanks in advance
Yunna.xD said:
Hello guys,
I have a Note 5 and want to listen to music via my Bose QC 35 II. As these headphones only support SBC, which is quite basic and the slightly better AAC codec, no Aptx streaming is possible. It is sad that the good sounding aptx is not available, so i wanted to get the best out of it and try to listen with the aac codec. Unfortunately, it is only possible to manually change the bluetooth codec in Android Oreo. Is there a way be it an additional app or similar actions to manipulate the bluetooth audio codec even in Android Nougat?
Thanks in advance
Click to expand...
Click to collapse
You should probably change the subject of this thread to "How do you..." as your current subject implies you actually know how to do it, while you are actually asking how to do it.
Sent from my SM-N950F using Tapatalk
see my post here for a similar issue that I was able to workaround fairly easy
TLDR: You need root, edit your build.prop (using text editor, some app from the play store, etc) and change the following key: persist.vendor.bt.a2dp_offload_cap
by removing -aac from the string.
I'm sorry if it looks like I'm spamming I just encountered this issue on a lot of forums with no result and I do hope that this will help some

Audio recording app that supports stereo recording on Nokia Plus 7?

Hi everyone.
As the title suggests, I'm looking for an audio recorder that supports stereo recording on Nokia 7 Plus.
I have tried multiple recording apps on the Play Store and even F-Droid but none of them worked fine. All of them record distorted sound in stereo mode.
Though mono recording works somewhat fine but still not usable in my case.
I think as of now there is no app that supports spatial audio recording on Nokia OZO enabled devices.
Can someone shed some light on this issue?
Have you tried Hi-Q audio recorder? It does good stereo recording. Check it out.
Try Sony Audio Recorder from Play Store!
https://play.google.com/store/apps/details?id=jp.snowlife01.android.voicerecordertrial
So far this is the only app that has worked for me: https://play.google.com/store/apps/details?id=com.stereomatch.audio.recorder.hires
It gives you various audio source options to record in stereo mode. They just need to simplify its UI and settings. Other than that it's a perfect recording app. Kudos to the developer for his efforts.

Does Mi 8 Have Hi Res Support?

Does xiaomi mi 8 have hi res audio support or bult in dac or somethingelse?
JonathanFreeze said:
Does xiaomi mi 8 have hi res audio support or bult in dac or somethingelse?
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Click to collapse
Yep, all snapdragon devices do. You have to bypass the main audio codecs/OS hand-offs. Programs like PowerAmp is the best for this, and hits the hardware chip directly bypassing the MIUI system to give you 24Bit audio at 192khz. Phenomenal sound. If you also bump the audio amp levels in the OS mixer file, you can get super loud audio in combination. The combo is what i've run on every phone since the HD audio was built-in to the Snapdragon.
Agimax said:
Yep, all snapdragon devices do. You have to bypass the main audio codecs/OS hand-offs. Programs like PowerAmp is the best for this, and hits the hardware chip directly bypassing the MIUI system to give you 24Bit audio at 192khz. Phenomenal sound. If you also bump the audio amp levels in the OS mixer file, you can get super loud audio in combination. The combo is what i've run on every phone since the HD audio was built-in to the Snapdragon.
Click to expand...
Click to collapse
Do you need to root your phone to achieve this ?
Not for hires audio using Poweramp.
To make louder audio output with mixer file tweaks yes.
JonathanFreeze said:
Does xiaomi mi 8 have hi res audio support or bult in dac or somethingelse?
Click to expand...
Click to collapse
I have been studying Android audio configuration files and experimenting with HD players for some time and I can say the Mi 8 sound incredibly well with good headphones using the USB-c adaptor included.
The problem with Android Audio is that, in general, Android Mixer will upsample everything to 48 KHz and apply Qualcomm, Android and Miui effects, such as companding, Dinamic Compresssion, and also echo cancellation to voice signal. This is not bad in general, since phone speakers are not of good quality and there is benefit to dynamics and also voice telephony is better with echo and gain which are automatic. But there are many other sound libraries such as dirac, virtualizers that are loaded automatically and used by apps.
The problem is that generic apps like Spotify, Chrome, our Youtube will upsample 44.1 Khz videos and music to 48KHz with fast resamplers, and it shows in both the speaker and headphones. Specific Hi-Res players like PowerAmp or Neutron take advantage of some profiles in android audio configuration files to present audio directly to the mixer without resampling and using high-bitrate. In reality, it is not a special codec or driver, they just use some profiles that are in most recent android phones. I discovered this a while ago and can attest that the Mi 8 sounds fantastic with both PowerAmp and Neutron, when configured correctly. I like Neutron best for better control and customization. It has a toggle for automatic samplerate adjustment and you can check that the output is as source, and use 64-bit codecs with up to 32-bit processing. For example, a same mp3 sounds much better in Neutron/PowerAmp than played in Whatsapp or a generic audio player. Neutron also has a manual hardware preamp gain apart from master volume that is really useful to contain clipping and use the hardware full amplification. Custom kernels have headphone preamps too to optimise power.
I recommend Ainur Narsil mod, it is a twrp/magisk module that tweaks some build.prop audio settings, and it modifies android audio configuration files such as audio_policy.conf and audio_effects.conf to remove these effects and add more samplerates to generic profiles on android. I have taken the time to study these files myself and have discovered that Miui default config does not take full advantage of our Mi 8 Qualcomm Snapdragon audio chipset. Out Mi 8 is capable of dual-sampling playback, that is, it is compatible with 44.1Khz and 48Khz (and multiples) playback so we don't need Android to upsample everything to 48Khz as a generic phone does. Of course, the mixer will upsample to 48 Khz when other sounds kick in (like notifications), but when you use PowerAmp/Neutron with HD output, you can get as close as bitperfect playback, since I think this profiles are direct-pcm and don't get generic effects here. (android audio configuration files such as devices and mixers are complex but a wonder to understand
I have tested Narsil, and while I don't think it improves when listening to Neutron/PowerAmp, it should help with the speaker and apps since it removes a bunch of android and miui effects. I have tweaked a bit further these audio configuration files after Narsil yesterday, and I am happy that it works the way I want. I have checked in terminal audio mixer info that it plays 44.1Khz without upsampling in a generic player. Narsil does just that also too.
Notice that is not convenient to upsample 44.1 Khz content to 192KHz, it is best to play at native bitrate. Bitsample you can set to 24 or 32-bit playback, if your hardware supports it. Mi 8 supports 32-bit. But it will sound as good in 16-bit if the source file is 16-bit, altough mp3s can benefit in 24-bit.
najabi said:
I have been studying Android audio configuration files and experimenting with HD players for some time and I can say the Mi 8 sound incredibly well with good headphones using the USB-c adaptor included.
The problem with Android Audio is that, in general, Android Mixer will upsample everything to 48 KHz and apply Qualcomm, Android and Miui effects, such as companding, Dinamic Compresssion, and also echo cancellation to voice signal. This is not bad in general, since phone speakers are not of good quality and there is benefit to dynamics and also voice telephony is better with echo and gain which are automatic. But there are many other sound libraries such as dirac, virtualizers that are loaded automatically and used by apps.
The problem is that generic apps like Spotify, Chrome, our Youtube will upsample 44.1 Khz videos and music to 48KHz with fast resamplers, and it shows in both the speaker and headphones. Specific Hi-Res players like PowerAmp or Neutron take advantage of some profiles in android audio configuration files to present audio directly to the mixer without resampling and using high-bitrate. In reality, it is not a special codec or driver, they just use some profiles that are in most recent android phones. I discovered this a while ago and can attest that the Mi 8 sounds fantastic with both PowerAmp and Neutron, when configured correctly. I like Neutron best for better control and customization. It has a toggle for automatic samplerate adjustment and you can check that the output is as source, and use 64-bit codecs with up to 32-bit processing. For example, a same mp3 sounds much better in Neutron/PowerAmp than played in Whatsapp or a generic audio player. Neutron also has a manual hardware preamp gain apart from master volume that is really useful to contain clipping and use the hardware full amplification. Custom kernels have headphone preamps too to optimise power.
I recommend Ainur Narsil mod, it is a twrp/magisk module that tweaks some build.prop audio settings, and it modifies android audio configuration files such as audio_policy.conf and audio_effects.conf to remove these effects and add more bitsamples to generic profiles on android. I have taken the time to study these files myself and have discovered that Miui default config does not take full advantage of our Mi 8 Qualcomm Snapdragon audio chipset. Out Mi 8 is capable of dual-sampling playback, that is, it is compatible with 44.1Khz and 48Khz (and multiples) playback so we don't need Android to upsample everything to 48Khz as a generic phone does. Of course, the mixer will upsample to 48 Khz when other sounds kick in (like notifications), but when you use PowerAmp/Neutron with HD output, you can get as close as bitperfect playback, since I think this profiles are direct-pcm and don't get generic effects here. (android audio configuration files such as devices and mixers are complex but a wonder to understand
I have tested Narsil, and while I don't think it improves when listening to Neutron/PowerAmp, it should help with the speaker and apps since it removes a bunch of android and miui effects. I have tweaked a bit further these audio configuration files after Narsil yesterday, and I am happy that it works the way I want. I have checked in terminal audio mixer info that it plays 44.1Khz without upsampling in a generic player. Narsil does just that also too.
Notice that is not convenient to upsample 44.1 Khz content to 192KHz, it is best to play at native bitrate. Bitsample you can set to 24 or 32-bit playback, if your hardware supports it. Mi 8 supports 32-bit. But it will sound as good in 16-bit if the source file is 16-bit, altough mp3s can benefit in 24-bit.
Click to expand...
Click to collapse
I completely agree, PowerAmp is absolutely worth much more than its very small cost which I believe is $3.99 or maybe $ 4.99 It's been a long since I bought it, maybe around 5 years ago and of course I still get free updates. As you know it has every feature that you could want including screensaver animation, ID3 tag editing, and of course the sound quality is untouchable, for listening to music alone, it's perfect.
@JonathanFreeze,
Poweramp uses Dynamic EQ compression combined with the option over using Replaygain which equalises the volume across all tracks while the dynamic compression automatically adjust the sound loudness across the entire EQ spectrum, bringing out the sounds that are too quiet and taming the sounds that are too loud...a perfect balance which maximises loudness without hurting the quality by over compressing and squashing the dynamics.
In addition, it uses convolution reverb, and as @najabi mentioned you can choose to up sample based on what you are connecting to. Whether it's Bluetooth, USB C connected headphones, the built in speaker or a USB audio interface. Personally, I don't feel that it has any rivals and I also like to couple its use with Neutron when listening to music and Neutron is beneficial across the board for all of your audio uses. Our combined comments have only mentioned a few features that the Poweramp program offers. In fact, there are so many features that I could probably stretch this comment out to 2000 words or more talking about them.
Check it, you get to try it before buying! Btw, I just checked the price its $3.99 and it sounds great on the Mi8 : https://powerampapp.com/
Which by the way, although the Mi8 has a single speaker for external audio, the sound quality is very good : Here is an article with an in depth review of the sound quality : https://www.gsmarena.com/xiaomi_mi_8-review-1784p3.php
TLDR: Yes, the Mi8 has great sound, and we like it even better with Poweramp and Neutron.
Regarding Narsil, 
 @najabi I haven't tried it so I will definitely check it. Thank you very much for your vivid description.
Can someone confirm that it can stream audio using the LDAC codec please. I have read conflicting information on different sites. Thanks
Sent from my TA-1012 using Tapatalk
LDAC and tidal masters, sounding amazing. Well happy
Sent from my MI 8 using Tapatalk

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