I recently got this smartphone, and one of the very first things that I noticed is that volume thru headphones is very low, this affects the 3.5mm jack, USB-C audio and even bluetooth. It is in fact much lower than on the previous Redmi 9 which I compared with.
Doing some measurements (by playing a tone and measuring with a multimeter) I found that if I plug a male to male 3.5mm jack to the headphone, it will play audio thru, however none of the settings for headphone will be enabled (meaning that the phone doesn't think that I'm using headphones) if I then connect headphones using an adapter it will play at full volume no problem.
The 3.5mm2 jack puts out 0.8Vrms when there is no headphone, and 0.25 Vrms when it detects headphones. (way too low for many headphones).
This means that the phone has a feature that lowers its max volume by 10 dB when using headphones, that is why it also affects bluetooth audio.
For those that want to test it, if you plug a 3.5mm2 extension cord to the headphone jack, and then you plug headphones you will find out that the max volume is much much louder.
Hopefully there is a way that I can remove that feature all together.
I already tried changing the region, disable absolute volume, etc. None of that worked.
Follow up:
I found that what causes the problem is the equalizer effect that Xiaomi added to the phone.
Every time that the smartphone detects headphones it enables the equalizer, the equalizer has a range of +10dB and -10dB.
They implemented the EQ in such terrible way that +10 dB is actually -10 dBFS and -10 dB is -20 dBFS.
So if I increase the volume at say 100 Hz, it is now able to output 0.8 Vrms at 100 Hz. However if I increase the volume in all bands the EQ does nothing and it stays at -10 dBFS. meaning the issue is still present.
There is no option to disable the EQ, it is just flat by default but they didn't add an option to turn it off.
Edit: I tried disabling com.miui.audioeffect thru ADB and while it was disabled, the volume is still low.
No idea if there is another APK that I could try.
Related
I have a google car dock for my nexus one and I hook the audio through the car stereo with a 3.5mm audio cable. When it is plugged into the dock the sound is very low and the quality is terrible. If I just pull it out of the dock everything is back to normal -- this happens with all apps.
What do I have to do in order to prevent the phone from doing this while docked?
you have the exact same setup as i do and ive seen this as well, i think there is something that makes the audio play at a different volume specifically for when it is docked for some reason. im on cm6.1.1 and it seems a little better because i believe they tweaked something with it, i saw a checkin on cmsrc on twitter that modified some line with dock volume.
what ive found is if i set the media volume to about 5/8 or 7/8 then dock it the volume will make its "dock adjustment" and its up to where my car volume is from there, usually a little less distortion if the phones volume is a little lower than max. from there if i forget to set the media volume i will use the preamp slider in the poweramp music players equalizer to adjust.
i just wish the volume wouldnt change at all and the volume button on the side of the dock would change the media volume :\
side note: have you noticed that the voice search when docked doesnt pick up your voice very well? almost like the noise canceling mic is cancelling you out or something and other times it can pick up your voice great?
Actually the sound volume was solved by some user that re-compiled libaudio with the code that lowers the sound by 10db commented out. The problem I have is that the sound quality is so poor that it seems to be mono without bass.
It turns out that the crappy audio quality comes from Bluetooth being on. When I disable Bluetooth in car mode, everything is great. Unfortunately I can't figure how to make it disabled by default so I have to disable it everytime.
Sent from my Nexus One using XDA App
ok guys i got this problem with some headphones :
when i volume up the music to more than 0db using the voodoo audio booster my headphones just like unplug they dont actually unplug but its the same effect, the music stops and turns on again in 1-2 sec with like -30db. I got this problem with the SGS 2 headphones plugged into my SGS 1.
Did you set some sort of volume limit in the voodoo control app?
First wow dude 0 dB is loud. I have only even approached -10 dB using it as line-out, up near -20 dB on headphones is ear-splitting.
Second the -30 dB is the jack plug-in safety option. You can turn it off in the voodoo control app but it is activating because the headphones are being 'unplugged', which is the real problem.
ok so first my limit is +5db , and i know its loud i had never listened that loud to my last headphones ( the original SGS ones) and i dont know but i think the problem is not that much in the hardware but in the software. When i even get close to 0db the sound gets real crappy, and when i connect it to the laptop and turn them really loud the sound is perfect so the headphones dont have like a limit or something because i have several audio boosts on my laptop too. What i am trying to say that the problem is not in the headphones, and when i try get my music on the phone to more than -5db it sounds like -15db or something like that any ideas ? i think i have 3 options
1) problem in the phone
2) problem in the headphones
3) problem with the voodoo app
ohh and the other day i used these HTC headphones they had a button on the mic and when i listened to the music the sound was crappy and they were unplugging when i got my music to 0db but when i press and hold the button the quality was perfect and they were not unplugging. So again anyone any ideas
Hi I have a problem I have extremely good hearing and when I listen to my music on my note with the volume on minimum my ears hurt like hell when listening because it is too loud I measured it with a decibel meter and it is 52 decibels is there a way to make it less loud
How can it be too loud when on minimum ? It will be like a whispering mouse.
Have a fiddle with the equalizer settings, you may be able to reduce it a bit, As for mods and apps, they only exist to INCREASE the volume.
Or better still, place some cotton wool in your ears before putting your headphones in.
azzledazzle said:
How can it be too loud when on minimum ? It will be like a whispering mouse.
Have a fiddle with the equalizer settings, you may be able to reduce it a bit, As for mods and apps, they only exist to INCREASE the volume.
Or better still, place some cotton wool in your ears before putting your headphones in.
Click to expand...
Click to collapse
It is quiet with ear buds but when my big as headphones are connected they are way louder possibly because of the 50 millimeter drivers
aaaaah, that makes sense I assumed you were talking about the stock in-ear headphones.
I have some beats studios and they are very loud too, But i like it loud so its no problem for me.....
Do you have DSP Manager installed ? you could try to lower the bars to reduce the volume, Or try the app, Fine volume https://play.google.com/store/apps/details?id=opotech.finevolumev2
azzledazzle said:
aaaaah, that makes sense I assumed you were talking about the stock in-ear headphones.
I have some beats studios and they are very loud too, But i like it loud so its no problem for me.....
Do you have DSP Manager installed ? you could try to lower the bars to reduce the volume, Or try the app, Fine volume https://play.google.com/store/apps/details?id=opotech.finevolumev2
Click to expand...
Click to collapse
OK I will try that I have some beats pro which I unfortunately could not use because of the loudness so I used them on my mp4 player from sony
I think the best solution for you is a hardware solution, means: Buy an adapter which includes a resistor (with +/- to increase/decrease the Ohm).
All other solutions will impact the sound too much.
Those adapters are cheap and should be available at all eletronic shops.
greetings
R
Get an app with pre amp so you can turn the signal down b4 it's amplified.
From the man in your attic...
Even though this phone has a 3.5 mm headphone jack, the audio output via the jack is terrible.
I have tested 3-4 different earphones as well as gaming headphones but still I'm disappointed.
Even on the loudest volume, the audio seems a bit on the low side.
Any solution for this ? or any workaround ?
Have you tried to push the hj all the way in?
Sent from my Nokia 7 plus using Tapatalk
Yes. Earphone fits perfectly in the jack. I said that the volume is low because I compared it with my cheap old phones. And the hj audio o/p was way better than nokia 7 plus.
It might be high volume warning. You don't see this popup if your screen is off and volume stays at the same low level. https://www.xda-developers.com/how-to-automatically-disable-the-high-volume-warning-without-root/
With the Hammerhead ANC USB-C, or the included DAC, or the Hidizs, the RP2 outputs crackling and static at low volume levels. With the latest update, you either get no sound, or the crackling at below ~30% volume.
Using powered external DACs like a Schitt Modi, or combined DAC/Amps like a Sony NW-ZX300 in DAC mode or an JDS Element - there is no crackling.
Using UAPP on RP2 to play music, you can control hardware volume and software volume separately. It appears that the USB DAC and the Hammerhead ANC USB-C don't get enough power at low volumes with other apps and that is why there's dropouts and static..
Is this a problem with just the Razer Phone 2, or with Android in general?
I have the similar issue with my razer phone 2. the Dongle plus any non high end earphones, sounds really loss in low volume. But when I use the Sony MDR 7506, the sound is fine. Seems the razer phone is not user friend to low end earphone.