A week ago I got a G2x from Wind Mobile in Toronto. Along with some battery life and overheating issues reported here, there is this one problem I really hope is not the way LG designed this phone. Although I don't have any other smartphone to compare this to, design/shielding can and should avoid this problem entirely.
A second after any audio stops, or during a silent part of an mp3 in any media player, or youtube for example, there is a quiet hiss from the headphone jack, at least with the stock earbuds. After that second, there is a quiet pop/click before complete silence (amplifier being powered down?).
QUICK TEST:
Go into a silent area and put your earbuds in. Click the volume up/down buttons on the side of the phone to change the ringer volume. It does not matter where the volume is set to. As soon as you click the button, you may hear a pop or two, followed by the "boop" sound demonstrating your volume level, followed by a second of hiss, and another quiet pop into silence. Please post results...
The hiss is not very loud, but absolutely unacceptable for listening to any form of respectable music. I got the phone expecting to stream my stuff from home, and run it though a proper parametric EQ to correct the earbuds to perfection. They are in fact decent headphones, with rather flat response...
I have a hunch this is related to the same issue as the battery drain - maybe some faulty component in the power circuitry that also introduces noise into the power supply of other components, sometimes leading to instability, etc.
k00zk0 said:
A week ago I got a G2x from Wind Mobile in Toronto. Along with some battery life and overheating issues reported here, there is this one problem I really hope is not the way LG designed this phone. Although I don't have any other smartphone to compare this to, design/shielding can and should avoid this problem entirely.
A second after any audio stops, or during a silent part of an mp3 in any media player, or youtube for example, there is a quiet hiss from the headphone jack, at least with the stock earbuds. After that second, there is a quiet pop/click before complete silence (amplifier being powered down?).
QUICK TEST:
Go into a silent area and put your earbuds in. Click the volume up/down buttons on the side of the phone to change the ringer volume. It does not matter where the volume is set to. As soon as you click the button, you may hear a pop or two, followed by the "boop" sound demonstrating your volume level, followed by a second of hiss, and another quiet pop into silence. Please post results...
The hiss is not very loud, but absolutely unacceptable for listening to any form of respectable music. I got the phone expecting to stream my stuff from home, and run it though a proper parametric EQ to correct the earbuds to perfection. They are in fact decent headphones, with rather flat response...
I have a hunch this is related to the same issue as the battery drain - maybe some faulty component in the power circuitry that also introduces noise into the power supply of other components, sometimes leading to instability, etc.
Click to expand...
Click to collapse
stock ear buds?
k00zk0 said:
A week ago I got a G2x from Wind Mobile in Toronto. Along with some battery life and overheating issues reported here, there is this one problem I really hope is not the way LG designed this phone. Although I don't have any other smartphone to compare this to, design/shielding can and should avoid this problem entirely.
A second after any audio stops, or during a silent part of an mp3 in any media player, or youtube for example, there is a quiet hiss from the headphone jack, at least with the stock earbuds. After that second, there is a quiet pop/click before complete silence (amplifier being powered down?).
QUICK TEST:
Go into a silent area and put your earbuds in. Click the volume up/down buttons on the side of the phone to change the ringer volume. It does not matter where the volume is set to. As soon as you click the button, you may hear a pop or two, followed by the "boop" sound demonstrating your volume level, followed by a second of hiss, and another quiet pop into silence. Please post results...
The hiss is not very loud, but absolutely unacceptable for listening to any form of respectable music. I got the phone expecting to stream my stuff from home, and run it though a proper parametric EQ to correct the earbuds to perfection. They are in fact decent headphones, with rather flat response...
I have a hunch this is related to the same issue as the battery drain - maybe some faulty component in the power circuitry that also introduces noise into the power supply of other components, sometimes leading to instability, etc.
Click to expand...
Click to collapse
I thought the G2x didn't come with earbuds? Unless LG allows Wind Mobile to have earbuds. I know my G2x only came with the box, charger and manual. No SD, no HDMI, and no headphones!
Sent from my LG-P999 using XDA Premium App
Yes, canalphone headset! They block out a ton of external sound... Definitely not for driving.
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I am sure any headphone/speakers would do it, speakers in fact would be better, crank the volume on them and just change the phone ringer volume. Please try this test! Especially if you have a perfect unit as no modern sound device should do this and it leads one to question the stability of the hardware if a simple op-amp or DAC is noisy like that.
No HDMI cable nor SD card with Wind. Seems the card would only jack the price up unless they threw a 32GB in there. Micro HDMI cable is 5 dollars if you Google it.
Related
Ringtones- fine
Notifications are really really weak tho, any way to boost them since there's no x-loud this time
Sent from my D6603 using Tapatalk
I found a bug: setting the S-Force Front Surround option in the audio menu, phone does not ring when I receive whatsapp notifications.
I can't believe more people aren't mentioning this. I can barely hear notifications when the phone is in my pocket.
When you select the notification the volume is fine. Surely there's got to be some way of increasing it...
It really is ridiculously quiet.
Sent from my D6603 using Tapatalk
I agree too - I'd like separate Notification/Ringtone volume adjustments. I never hear when I get e-mails of messages etc.
Can you better investigate this bug? It's an hw or sw problem?
Every people can confirm this? With all volumes at the highest level , notifications are like at the minimum in every app.
When you choose the sound....it is loud and clear..... then it become very very low...
Which fw have you?
It's the same on the Z2. Really can't see how Sony haven't sorted it yet (that's assuming they think it is a bug). Have tried different firmwares, the only thing that can sort it (on the Z2) is flashing a 3rd party fix which you really shouldn't have to do on a £500 phone!!
So, is there no way to boost up notification volume? I just live with it with vibrat functions, but i not like vibrating...
Guys... please go to Sony support forums and bash it out on them!
http://talk.sonymobile.com/t5/Xperia-Z3-Z3-Dual/bd-p/xperia_z3
http://talk.sonymobile.com/t5/Xperia-Z3-Z3-Dual/notification-volume/m-p/838285#U838285
Not a single reply from them
Sent from my D6603 using Tapatalk
I just found this issue. How the heck are we supposed to know when we get messages except constantly checking the phone...
Pebble
3Shirts said:
Pebble
Click to expand...
Click to collapse
Haha, I have gear live which works a treat, but seriously; the volume in general is very loud on full, but notification volume sucks
This worked for me but for right now am i having difficulties repeating the success.
1. Go to settings - sound - system notification sound: select no sound. Do the same with whatsapp settings.
2. Install lightflow. Go to lightflow notification settings, set an mp3 file other than the ones found preinstalled in your phone as individual notification sounds for whatsapp, whatsapp groups, gmail, messages etc.
3. Go to lightflow volume settings, activate individual lightflow notification sounds and adjust their volume to the max ( louder than phone ringing tones ).
I am using "nextel" sound that i downloaded from zedge ages ago. It now plays as loud as in my previoud phone LG G2. I am using it with whatsapp and am very happy.
I did try to replicate this procedure and cut a small piece of a moby song and set it as gmail notification sound. Not as loud as my whatsapp sound. The piece that i cut from the song wasn´t so loud to begin with. I´ll try again with a louder piece of song or a new zedge - tune when i have time.
Nice experiments but I do think we need to get Sony to recognise it as a proper issue. At least it is only software and should be easy to fix...right?
This problem comes from the Z2, if SONY wanted to fix it already would have.
I think we'll have to keep quiet Android L
The notification sound volume from Z2 is better than Z3. Now I rely on the vibration which I not like it.
I have the same problem with my Z3 Ringtones fine but all notifications are ridiculously low.
Can't even hear the "plop" when I send a message in WhatsApp and hear a incoming message notification.
Coming from the HTC Ones I'm very disappointing. On the One I had full control of all sounds, is it like so hard to make a drawer to control sounds the same way? Can't even root the phone to get a solution cause of the damn bootloader.
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jamieroquai said:
I have the same problem with my Z3 Ringtones fine but all notifications are ridiculously low.
Can't even hear the "plop" when I send a message in WhatsApp and hear a incoming message notification.
Coming from the HTC Ones I'm very disappointing. On the One I had full control of all sounds, is it like so hard to make a drawer to control sounds the same way? Can't even root the phone to get a solution cause of the damn bootloader.
Click to expand...
Click to collapse
You just have to use normalized mp3s and there's no problem. Load your mp3s into Audacity or some other (free) sample editor, normalise them (it increases the volume uniformly, peaking at 100% usually), save them, copy them to your phone. Loud!
poldie said:
You just have to use normalized mp3s and there's no problem. Load your mp3s into Audacity or some other (free) sample editor, normalise them (it increases the volume uniformly, peaking at 100% usually), save them, copy them to your phone. Loud!
Click to expand...
Click to collapse
Still not normal that on a 600€ phone you need to do such things
I tried some notifications from Zedge but they are too loud now as you cannot change just notification volume without lowering ringtone..
Inateck Water Resistant Bluetooth Speaker BSTP-20
Overview
Hi all. So i’ve got my hands on another product from Inateck, this time ive got hold of a new water resistant (IPX5 rated) blutooth speaker.
Unboxing
The hub arrived in a small black, quite premium looking box with raised smooth music notes on the front. There are no details listed on the front other than the company logo.
So opening up the box im greeted with a very well packed, plastic wrapped speaker and a box containing the cable accessories.
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Hands on
Ok so the plastic wrap has been removed and its time to place with the device.
As soon as I remove it from the bag the first thing you notice is how rugged this feels, I mean really rugged! around the sides is a continuous piece of rubber like plastic which feels really solid but at the same time feels like it could take a good nock and not damage the speaker in any way. Straight away feels like this is the kind of speaker you could take outdoors, camping or to festivals and not have to worry about it getting damaged.
The whole front of the speaker is the grill made up of a mesh of small circles, around which is a fine orange line as a design feature.
On top there are 4 rubber buttons, power, phone connect / hangup, volume up and volume down. On the right hand side is a rubber cover protecting the Aux in and USB charging point, on the left side is a rubber wristband.
The back is home to a smooth layer of plastic which is perfect for attaching the rubber sucker which is included if you want to use this thing in the shower, which i intend to
Testing
Theres a couple of ways I plan on testing the speaker. firstly with my phone to play audio over bluetooth, next as a phone speaker / mic to make and receive calls, and finally to play music stored on my android wear watch directly over bluetooth to the speaker (not via the phone).
Setting up
I was amazed at how easy setup was. pairing with my Galaxy S4 was as simple as holding the power button on the speaker for a few seconds to put it in pairing move and scanning for it from my phone. It paired up fine and was immediately able to play audio to the speaker with no messing around.
There isnt much else to show, it just worked, soon as i went to play music it came out the speaker with a good level of sound. The speaker is rated at 3W max output and some of the bassier songs made it crackle a little but for its size it pack a good quality sound clear, crisp with some good level base packed in. when standing the speaker up the rubber surround acted as a grip to stop it moving at all on my desk during my base music test.
The volume goes pretty loud. playing a David Guetta song I managed to register about 100 dB which is pretty loud.
Next up is the test to make calls. Again really easy, went to make a call and it just defaulted to the speaker. Its worth mentioning that the speaker has a built in microphone so you can talk at it to hold phone conversations. Again the sound was crisp and the microphone had no trouble picking up normal voice down to a whisper.
Finally testing it direct from android wear. This I thought might be a challenge for the speaker as it would have to pair with a new device whilst my phone bluetooth was on.
But no problems here, it found and connected directly to the speaker. Putting music on android wear for playback without the phone around is a bit of a pain. Basically you have to upload songs to google play music, then download it to the phone and have a setting ticked to also download to android wear. Wear watches only have 4gb storage so this can be filled quickly with a big library. For the purpose of this review I uploaded a single song onto the watch and shutdown my phone.
With the phone connected the default is to play through the phone unless you stop it from doing so, then the option comes up to play through paired bluetooth device. Again once I’d finished faffing with the querks of Android wear it worked perfectly. The music played from the watch with no issues, stuttering at all.
This is a massive bonus as you have on your wrist a portable music player which will work with this speaker no problem. I enjoyed a shower with my watch and some music with the speaker suckered onto the bathroom wall (dont worry no pictures!) I really really like that this worked fine with the watch and this is a massive plus point for me as it opens up the versatility no end.
Positive points
+Rugged design
+Rubber surround
+IPX5 rated
+Can be used to make phone calls
+Good sound quality
+Goes really loud!
+Sucker included so can be stuck on bathroom walls
+Works well with more than one device
+Works well with Android Wear
+Funky design. I really like the look and feel of this.
+Rechargeable battery
+Really simple to use
Negative points
-High volume bass starts to crackle
Conclusions
Overall a very nice little product. I was really impressed with how well it worked, and it just worked. I gave it to my non-tech savvy girlfriend and she figured it out without the instructions! The build quality is great, I feel like I can take this camping and it will just survive and last. The sound output is really good, I’ve left music on during the review.
Score
My Score out of 5:
:good::good::good::good::good:
5 out of 5 - I cant really find much to fault with this.
Bottom Line
Very impressive little device, lgood sound quality and rugged.
Links
http://www.inateck.com/inateck-btsp-20-ipx5-water-resistant-bluetooth-speaker/
Hi all, I have recently acquired that gadget and this is my experience
I must start this review confessing that I am a quite intensive user of headphones, either it's radio, podcast or music.
For that reason, I found very interesting the opportunity to try this device, not only for being wireless (they use Bluetooth), but also for their bone conduction tecnology (the same used by the famous and expensive Google Glasses). The sound is transmitted through our bones and not through our ears cavity.
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External Appearance
They are made on plastic and the touch is very agreeable. On the right side can find the “Play/pause” button, on the left one, another button for calling (hang up, down and voice assistant). Finally in the rear part the is a microUSB adapter for charging, the On/Off switch and two small buttons for volumen and track change.
Specifications
Bone conduction technology
Bluetooth V3.0+EDR with profiles HFP, HSP, AVRCP, A2DP
NFC Connectivity
Stereo sound, with high sensitivity microphone
High-speed data transfer (24Mbps)
Intelligent power saving system
DigiCare splashproof design, suitable for outdoor sweaty sports
Ergonomic and including and adjustable band for different head sizes
Only 50 grams of weight
Working distance 10 meters
Frequency 20-20Khz
Impedance 32Ω
Receive sensitivity 88dBm
Battery de 260 mAh
My experience
Between the different advantages present on this technology, the first one that could be highlighted is that, since we don't introduce anything into our ears, the potential damages are clearly reduced, so less intrusive than traditional earphones.
In addition, it prevents of having bacteria inside the ears, and, something that surprised me, it doesn't block the sound while talking or listening to music, so if you are on the street, you continue hearing other sounds like traffic.
After using them continuously for more than one week, I can clearly say that the advantages mentioned on the above paragraph has fully convinced me. Specially because I guess my ears are quite special and so, I find uncomfortable almost every earphone... or they fall all the time.
In the past week and something, I have used those Digicare DO walking, running and riding the bike and, they didn't fall down at any moment, and the sound was always good.
The quality of the audio is very good, not only listening to music, but also during calls, even while going on the bike.
The battery duration is most than acceptable, it has last for several hours (like promised) using for music and doing long calls (more than 1 hour).
Another aspect I was a little bit doubtfully was the position of the buttons, BUT at the end the user experience has been great, very easily accesible all of them, the ones next to the ears (play/pause and calls) respond very quick to a simple touch, and the ones in the back are very easily identifiable, even wearing gloves.
Last the Bluetooth works excellently, the pairing was the quickest I've seen in the last gadgets I've tried (other earphones, speakers or between phones,…) and even when we change to another phone, once the Bluetooth enabled it connects really fast. The other good point here is that we can connect 2 phones simultaneously.
Points to improve
For sure not everything is good on this review, so here some aspects that Digicar should improve for future updates or versions.
The NFC is clearly improvable, it worked... but sincerely it wasn't quick, neither simple. I tried with 2 different smartphones (including Galaxy S4) and I only could detect the headphones with one of them.
They come on universal size. I have a small head, so I feel like I have too much "hanging behind" and it is a little bit uncomfortable with the coat or scarfs. It's true that the elastic belt to adjust it works well, and the position for a good audio quality, but still too much plastic hanging... maybe it would be a good idea to have two different sizes.
Voice assistants (Siri, Google Now, Cortana...) work but, sincerely don't help, or at least I couldn't make them understand as well as when you talk directly to the phone. I worked very well to sat "Call number 123456789", it dialed and the conversation quality was very good. But when asking about football results, or something to add to my calendar, it captured other noises in addition to my voice (I guess the micro is really sensible also for that) so Siri didn't finish capturing.
I suppose using it more often, Siri (or the others) will "learn" to understand us, and it will work better, but for the moment it's not so comfortable, I go much faster with the fingers
Conclusions
Some months ago, I was looking for Bluetooth earphones and I finally took the traditional ones (inside the ear), first because I didn't know anything about that bone conduction technology and secondly for the price, the difference was considerable.
After trying those ones... I trully think the price is justified. In fact I haven't used the other ones anymore since I receive the Digicare DO, just a question of comfort.
They are currently in promotion at Geekbuying using the promo code PNALFZGX . That's where I got them
Using the secondary display as and application switcher. I really hope LG expands on this.
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This second screen window allows you to switch back and forth between apps like a mini windows taskbar (Running applications).
Don't forget in nougat, if you double tap the recent app button, it switches to the last app that was used
McQueefus said:
Don't forget in nougat, if you double tap the recent app button, it switches to the last app that was used
Click to expand...
Click to collapse
:-o
Learn something new every day! Thank you!
planetbeen said:
:-o
Learn something new every day! Thank you!
Click to expand...
Click to collapse
No problem:good:
Also, you can slide your thumb left and right on the LG keyboard spacebar to scroll through the words you just typed.
Sent from my VS995 using Tapatalk
The 4 way DAC, with a semi-decent connected headphone and listening to a local FLAC, at least 24\96, has made me grateful we evolved with 2 ears. Led Zeppelin (the 45 RPM version )with the V-Moda wireless (though connected with it's included braided cable) has opened music, that I know very well, in a wonderful manner.
I had the Sony MDR7506 at 63 ohms and it made the hair stand up. I've returned it and ordered the BeyerDynamic DT 770 PRO 250 Ohms Studio Headphones. High Definition music, and a headphone that triggers the DAC, will make every other phone, you have listened to, into a Hodor. My mobile phone music player history goes back to the Seimens SX66 (from 2004) and 20 or so other phones that could play locally stored music. This thing is a beast.
Good stuff!
Sent from my LG-H918 using Tapatalk
When I was considering the V20 I was like, ok it has good audio, but whatever. I focused more on the removable battery, screen size, second screen and overall specs.
After trying the DAC with my Audio Technica noise cancelling headphones I am like WOW! And that's with no special music, just regular mp3s. Is like that every instrument and voice is in the room next to you when the DAC is activated! I am glad that LG took the effort to develop a high quality feature. Now I don't mind that I paid the early adopter fee (usually after few months phones like these are much cheaper on eBay) of paying regular price.
My other favorite and more practical feature is the second screen. I was used to the LED of my Nexus 5 and was a little bit concerned about getting used to the second screen. That said I usually look at my phone from 1-2 feet anyway when I want to check for new notifications and in this context the second is much better because I can see the notification icons.
The second screen can be used to control your music as well!
haris163 said:
The second screen can be used to control your music as well!
Click to expand...
Click to collapse
The only annoying thing about music player on second screen is that when playing music on lockscreen it doesn't stay on music player (it keeps going back to default screen). I have to keep swiping it back to music screen everytime I want to change a song.
This evening I went to a small recital to try and record in 24\192 again. My 2 previous shows had been disappointments with the result. It was mostly my fault but I took steps to correct my methods. Wow! I don't what the 2 auto modes are for but when I managed the gain and clipping in the manual mode, I got HD tracks that are worthy of commercial releases. One I got my fat fingers out of the way, and started sampling the results, between songs, this is my next favorite feature.
I also love the removable battery and SD card slot but I have had 3 LG phones before and trusted the engineering.
justthefacts said:
The only annoying thing about music player on second screen is that when playing music on lockscreen it doesn't stay on music player (it keeps going back to default screen). I have to keep swiping it back to music screen everytime I want to change a song.
Click to expand...
Click to collapse
If your headphones have controls (specifically an answer/disconnect button) you can double tap the answer button to skip to the next song.
dartinbout said:
The 4 way DAC, with a semi-decent connected headphone and listening to a local FLAC, at least 24\96, has made me grateful we evolved with 2 ears. Led Zeppelin (the 45 RPM version )with the V-Moda wireless (though connected with it's included braided cable) has opened music, that I know very well, in a wonderful manner.
I had the Sony MDR7506 at 63 ohms and it made the hair stand up. I've returned it and ordered the BeyerDynamic DT 770 PRO 250 Ohms Studio Headphones. High Definition music, and a headphone that triggers the DAC, will make every other phone, you have listened to, into a Hodor. My mobile phone music player history goes back to the Seimens SX66 (from 2004) and 20 or so other phones that could play locally stored music. This thing is a beast.
Click to expand...
Click to collapse
Enjoy those headphones. Not the most musical but still very good and great for critical listening.
So back in August I purchased the octocore unit, with Oreo, from Phoenix Android Radios for my 2018 Civic Si. Since then it's been hell trying to figure out the distortion from my Front Left and Rear Right speakers and why fading to Front Left causes extra distorted audio that plays from both Front Left and Rear Right speakers. Same goes if fading audio to Rear Right - extra distortion and also comes from Front Left. Fading to the Front Right or Rear Left sounds normal.
Issue:
Audio sounds distorted - especially in the upper hz ranges (none specific - but not apparent under 500hz). When I use the pre-installed Amp application and fade the audio to FL (Front Left) I also hear audio from the RR (Rear Right) - it is extremely distorted to the point of disgusting and vocals cannot be made out. If I fade to the FR or RL the audio plays only out those channels and sound quality is what I'd expect. It's important to mention that the distortion isn't as extreme when playing on all speakers - but noticeable enough to be annoying especially since I'm positioned closest to the FL. I can only listen to podcasts... playing music is just painful.
Original Theory:
I must have crossed wires somewhere. I tapped/soldered (w/ shrink) directly into the harness of the radio and sent the high-level output directly to my speakers, bypassing the factory amp as Phoenix instructed me. As a sanity test - I tested each speaker individually to check for phase issues. When using an alternate audio source (cheap Bluetooth amp) to send signal, the audio sounded great across all channels. I even intentionally crossed the FL & RR negative wires (maybe I'm colorblind and can't read the labels I put on the wires) and it sounded like what you'd expect... I've wired speakers before and not new to this at all. But I've made mistakes before. I had two friends confirm I'm not crazy here. :victory:
New Theory:
Maybe the radio's built-in amp is trash. So I dished out $140 and bought a 4-channel amp and hooked up directly to RCA outputs. After doing this - not only did I lose the Android sound effects (and other things), but the main distortion was still there. Using the Amp app and fading to either FL or RR would play the exact same distortion from both channels at once. Again, as a sanity check, I plugged my tone generator into each RCA on my new 4-channel amp. Each channel worked as expected. This confirms the wiring after my amp is good. And even if I managed to screw up 4 RCA plugs - it would just swap channels, not cross them. All RCA input/outputs are isolated to prevent touching each other.
Current Theory:
I'm getting some kind of interference, maybe, but it's only affecting two channels? Or there's probably a software/hardware issue. I used FooBar2000 music player to play music and set it to convert the music to mono - the distortion was gone! Then I used the same app to down-sample the songs to mono then up-sample back to stereo (redundant - extra CPU, etc.. I know) but this HELPED the distortion significantly. I can actually listen to a song stored on the unit/usb as long as using FooBar2000 to play it and not Bluetooth or any other apps on Android. This leads me to suspect the pre-installed Amp app is sending wrong signal to each channel or it's from the built-in amplifier.
Testing - Getting Scientific:
I decided I would do a test to see what kind of voltage I'm getting from the low-power output of the RCA and voltage I'm getting from the radio's high-power speaker line at various volume levels using the Amp fader to "all" channels and comparing those results to ones when fading the test-tone to the FL speaker only. For this test - I only used the FL and RR speaker and used a constant 1K tone. I noticed when checking voltages while fading to FL or RR that the voltage wasn't constant. It would move up and down by .01 to .02 volts. Testing while faded to all channels shows a very steady voltage. Here's the results:
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If anyone can help me get to the bottom of this please! I've spent so many hours/days slaving away trying to make this work. I've re-wired everything 3 times because I kept thinking I must have made an issue somewhere as Phoenix Android Radios support team and engineers don't know what it issue is. Latest was telling me to check ground - which I grounded w/ short thick gauge copper cable (multi strand) direct to frame. Confirmed good ground w/ multimeter (was was original ground).
If someone would like a video to demonstrate this better please let me know and I'd be more than happy to record one right away!
Extra Details:
The problem is in software need to install hal9k android 8 or 9 in android 10 i found same problem!
DjGolpeX said:
The problem is in software need to install hal9k android 8 or 9 in android 10 i found same problem!
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Had same in Wondefo px5 octa core factory rom android 8 in btmusic app high frequences was distorted