Adjust audio L/R balance without root? - OnePlus 7 Pro Questions & Answers

I was surprised that a phone advertised for its stereo speakers does not come with an option to adjust L/R balance. My old Samsung and HTC all do.
I would rather not go the Viper4 route since L/R balance is the only option I need from Viper4 and don't want to root just for this. Also I thought Viper4 is for phones with mono-speaker but Oneplus7Pro has stereo speakers so surely audio L/R should be adjustable at higher level?
Some music apps do come with its own L/R balance adjustments but no streaming services does AFAIK (Netflix and Spotify don't). Also no video playing app does either.

Also me

Are you trying to adjust the balance of the built in speakers? If so, it's not going to work since they are different strength drivers and have different frequency ranges

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[Q] Limited Audio output

Hello,
I just purchased Samsung Galaxy Core DUOS mobile. Everything is great but the audio output is too limited (or controlled).
I love to play with high bass and treble but it controls audio output whenever I increase bass and/or treble.
It looks like there is built-in volume control that controls it. If I decrease both bass and treble than it increased audio but when I increase bass or treble than it decrease audio output. I think this is to protect ears for high volume but I like it. I am always hearing high music on other china mobiles and they are working great.
I tried to increase music by Speaker Boost plugin and also tried Equilizer plugin but nothing changed.
What I want is to disable the automatic controller which is decreasing output audio when I set high bass/treble. Is there any settings?
I am playing my MP3 in default player provided in mobile.
You can wait for the custom roms which will have beats audio which will be a please to the ears.
*PRESS THANKS IF I HAVE HELPED*
Why So Serious?!

Poweramp Best Equalizer Settings

Searching for the best equalizer setting I finally found one.. Hope this will help to bring out the best in your earphones!
plz upload export file what we can easily import in our poweramp
Try out
Will try out soon..
Each system and user are different; no one size fits all!
That curve would sound horrible with the Buds+ if your hearing is still good and even if it wasn't.
Read: https://www.google.com/amp/s/www.digitaltrends.com/home-theater/eq-explainer/?amp
When you change a slider it alters not just those frequencies between it and the adjacent sliders but others down the line. Try to start at zero and pull down offending ranges, then jack up the volumn as needed. Boost others as needed but try to keep the slider curve smooth like a sign wave as uneven increases can really screw up the sound.
On my Denon flagship reciever/sound system no equalizer was needed; I dial in the subwoofer cutoff and then level as needed. That was all other than changing the music mode as needed, sometimes going to straight 2 speaker stereo.
The 10+/ Buds+ are not near as well balanced as the former sound system and need heavy equalization to bring them up to par.
One EQ profile will not fit all music; on Poweramp I have over a dozen. It allows you set a profile per song, album, playlist.
It takes a lot of time and trouble to set up a EQ profile(s) for a large music collection. My collection goes back to the 30's swing to modern R&R, each has different requirements to maximize its sound.

Speaker phone volume

Does anyone have an idea if we can raise the speaker phone up louder then current max? For some reason the speaker phone seems to be a lot quieter then using the speaker for watching youtube for example.
Yes, there is a special trick. Use external amplifiers such as even a little cylinder bluetooth speaker!
Works like a charm! As for when the device has been rooted and modified in he future, there may be a kernel with access to "speaker level gain."
However. Playing large dynamic youtube and web video such as movies and TV.... These sources are not mastered or mixed like the ads or like music or like a voice call...
Therefore, modding the gain up is very easily going to damage the speaker when "standard loud audio" plays. Sure you can control it and lower the risk... But loud ads on youtube you can't control.
Audio that loud then gained digitally can easily exceed the design parameter of the amp and speaker.
Sent from my sailfish using XDA Labs

Microphone records only in mono?

Ok so I just got the Pixel 2 XL and realized that all audio recording on it is in mono. Even when I hooked up my blue yeti (set to stereo mode) the audio still got mixed down to mono. The reason why this is such a big deal to me is that recording just sounds awful compared to my Galaxy S5 that recorded in stereo.
Is this a hardware limitation on the Pixel 2 XLs side, or is it a software limitation? If it is software do I have hope that a custom rom in the future would be able to enable stereo recording?
There's one mic (unless you want different levels and quality on each channel) and one pin for mic input in the phone, so I'm guessing (it would be the way I'd have done it) they've only implemented one audio channel for the mic (hardware costs money). So even if you use a stereo mic, both channels are being fed to the same pin (or you're losing one channel, depending on the mic manufacturer and whether you have the mic set to stereo or mono), so the phone records in mono.
I haven't torn my phone apart - this is just a "how would I implement this if I were given the assignment" first approximation. (On second approximation, I'd probably split the mic input so a mono mic plug would hit both channels, but a stereo plug would maintain them separately, then run 2 channels in the phone, at least for video recording ... then present it to be shot down as being too expensive.) But I don't work for Google, so I have no idea what their design philosophy is.
There is definitely at least two mics, one bottom side that you speak into and one top side that is used for ambient noise reduction while you are on a call. This is the same setup that the original Pixel had except the ambient mic was on the rear, it too only recorded video with mono audio, but later on an audio system mod was made to enable stereo playback and capture; https://forum.xda-developers.com/pixel-xl/themes/mod-enabling-dual-speaker-audio-playback-t3492257 . Unfortunately an equivalent mod doesn't exist for our Pixel 2 yet, but hopefully someday it will.

Is an Eq app for high range (30-40dB) boost possible?

I have mild to mod hearing loss. I have hearing aids but there are cases where wearing them is not possible or desirable, a key one being when using NC headphones. So to compensate I have searched high & low for an Equalizer app or any other audio amplification category type app that can boost on-board/streaming volume by frequency. Basically it "should" be as simple as an Equalizer app that has the abiity to boost up to say 30-40dB (or more) but the highest I've ever seen is 18dB. Most apps only run 6-10 band to max 10 or 15dB. Even Neutralizer that appears to sort of fit this need can only boost to 10!
There seems to be an abundance of apps that target hearing impaired but they are either hearing aid paired apps & just control the aides or they try to substitute for aides & amplify ambient sound - ie amplify microphone input. One of these Petralex goes to 30dB, which makes me think it is technically possible.
So bottom line is I have to wonder if it is technically just not possible; Android doesn't allow that level/power of amplification or is that there is just not enough perceived need for something along these lines. I could see it as an add for the headphone makes but again - eg: Sony MX headphones companion app has an Eq but only boost to 10dB - meant for taste not hearing loss.
I have a DEV background but have worked in sys admin for 10+ years now - IF it is possible I may entertain the idea of giving it a shot myself even if only for my own use.

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