Multiple Bluetooth Audio Source To A Single Bluetooth Headphone At The Same Time. Is It Possible?

[Rei]

This is extremely, dangerously wrong.

Healthy headphone use: How loud and how long? - Harvard Health Blog

Headphones and earbuds are nearly ubiquitous, but how often do people think about whether or not they are using them safely? Knowing about safe listening levels and safe length of listening time will help people protect themselves while using their listening devices.

www.health.harvard.edu

https://apps.who.int/iris/bitstream/handle/10665/154589/9789241508513_eng.pdf;jsessionid=172681F5CFF3638A037D6ED9516363C1?sequence=1

At the last link, please note the over 200 references. It's a fact, just as it's a fact that running a chainsaw next to your ears is bad for your hearing. Or firing guns without protection. For how it works, here's Wikipedia:

Noise-induced hearing loss - Wikipedia

en.wikipedia.org

Regardless, I did try listening at near half-volume & I did not "feel" what I wanted to hear & the sound seems bland. Oh well, I stop listening at max volume once my hearing show signs of being affected.

Why would you listen to two songs and a podcast at the same time, especially if they're at max volume? This is what you said:

Yeah, sorry, I still don't understand? What's wrong with listening to multiple different audio at the same time?

 

[tripleclicker]

How about using two phones and two headphones (but only using one side, in each ear)? Although I don't know if you could press play simultaneously on both phones. If the source audio does not have to start at the same time then you're golden.

 

[Frick]

Regardless, I did try listening at near half-volume & I did not "feel" what I wanted to hear & the sound seems bland. Oh well, I stop listening at max volume once my hearing show signs of being affected.

The problem is you won't notice. Your hearing will degrade over time. If the sound is bland you want better cans, and feeling is a matter of habit.

Yeah, sorry, I still don't understand? What's wrong with listening to multiple different audio at the same time?

Because it becomes just a noise. Let's try something. Play these things simultaneously:

Two songs, one podcast and one video, as you said you did. How do you get out anything from it? How can you as you say feel the adrenaline of a song if there's a completely different song also playing at the same time? And how do you even hear the podcast?

Or am I completely misunderstanding you?

 

[Rei]

How about using two phones and two headphones (but only using one side, in each ear)? Although I don't know if you could press play simultaneously on both phones. If the source audio does not have to start at the same time then you're golden.

They don't have to start at the same time but they do have to play together simultaneously & using one sound for each ear would just cause imbalanced sound distribution. I would also have two idle "brain core" if I'm not watching anything (see my following comment for context).

Because it becomes just a noise. Let's try something. Play these things simultaneously:

Two songs, one podcast and one video, as you said you did. How do you get out anything from it? How can you as you say feel the adrenaline of a song if there's a completely different song also playing at the same time? And how do you even hear the podcast?

Or am I completely misunderstanding you?

Ah, I understand now what you are getting at.
Apparently, me & my new parents (at the time) was told by a psychologist during my adoption 9 years ago that I can process various different information simultaneously. To put it in CPU analogy, my brain as a processor has 4 cores each processing different unrelated task at the same time without disrupting the other process. So for me, watching all that YouTube video that you linked, filtering them each into different process in my mind without losing focus on one or more video is possible for me, like I am doing right now which is watching two different TV series & listening to a music all while typing this.

I suppose this is what you meant with your question?

 

[Caring1]

By the time you notice hearing loss, it's too late.

 

[Frick]

They don't have to start at the same time but they do have to play together simultaneously & using one sound for each ear would just cause imbalanced sound distribution. I would also have two idle "brain core" if I'm not watching anything (see my following comment for context).

Ah, I understand now what you are getting at.
Apparently, me & my new parents (at the time) was told by a psychologist during my adoption 9 years ago that I can process various different information simultaneously. To put it in CPU analogy, my brain as a processor has 4 cores each processing different unrelated task at the same time without disrupting the other process. So for me, watching all that YouTube video that you linked, filtering them each into different process in my mind without losing focus on one or more video is possible for me, like I am doing right now which is watching two different TV series & listening to a music all while typing this.

I suppose this is what you meant with your question?

Yeah. And I don't believe you until I have proof (because that is a super rare thing) but that doesn't matter.

Anyway, the only way is wired I'm afraid. Or playing everything from the same source.

 

[Ferrum Master]

Anyone who served the army has a permanent hearing loss at gunshot spike frequencies, especially to the closest ear depending what hand you use. Same applies to anyone liking guns without using earplugs. Factory workers and racing drivers are next ones that comes into mind.

It seems you haven't been to a doctor, these days they print out a precise resonance plot about your eardrum sensitivity range, drops ie achievements have done to yourself.

Damaging it is fairly easy... I would also refrain from using earbuds for longer periods. Same applies with eyesight, screwing hearing is as easy.

Many artists have became deaf because their youth mistakes and living style. Ozzy, Eric Clapton, Brian Johnson...(prolly younger ones are scratching their head on those names)

 

[Rei]

By the time you notice hearing loss, it's too late.

Anyone who served the army has a permanent hearing loss at gunshot spike frequencies, especially to the closest ear depending what hand you use. Same applies to anyone liking guns without using earplugs. Factory workers and racing drivers are next ones that comes into mind.

It seems you haven't been to a doctor, these days they print out a precise resonance plot about your eardrum sensitivity range, drops ie achievements have done to yourself.

Damaging it is fairly easy... I would also refrain from using earbuds for longer periods. Same applies with eyesight, screwing hearing is as easy.

Many artists have became deaf because their youth mistakes and living style. Ozzy, Eric Clapton, Brian Johnson...(prolly younger ones are scratching their head on those names)

Thank you for the advice. I will take it into consideration.

Yeah. And I don't believe you until I have proof (because that is a super rare thing) but that doesn't matter.

While it's not proof, the intention of this thread should be pretty telling.
I guess I have that "super rare thing". In fact, a while back, I was under the impression that this is a pretty common thing, that just about everyone is also capable of. Apparently not...

Anyway, the only way is wired I'm afraid. Or playing everything from the same source.

How do I wire multiple source to a single headphone? And playing everything from the same source only works on supported apps which apparently is not a.whole lot.

 

[Frick]

How do I wire multiple source to a single headphone? And playing everything from the same source only works on supported apps which apparently is not a.whole lot.

A small mixer table. And I realized you can get an adapter for bluetooth.

 

[Rei]

A small mixer table. And I realized you can get an adapter for bluetooth.

Yeah, I just found out Bluetooth 5.2 can do simultaneous multi-streaming of audio in a way that I asked for.
The two issues is that the spec just came out earlier this year so there is too few devices that are Bluetooth 5.2 capable.
The other potential issue is which side requires Bluetooth 5.2? The Bluetooth audio source(s), the Bluetooth receiver or both? It'll be financially problematic if it's the former as I would have to replace my smartphone, tablet, & Bluetooth stereo system.

 

[SenditMakine]

I guess probably the receiver since bluetooth has its own kind of "retro compatibility"

 

[dorsetknob]

BTW, what's "pink noise"?

its white noise played so loud your ears bleed

 

[Rei]

its white noise played so loud your ears bleed

Indeed... It was more like a screech than a loud static. Makes you wonder why it's called "pink".

I guess probably the receiver since bluetooth has its own kind of "retro compatibility"

I guess that would be the better option(?) for me since I don't really wanna replace my smartphone, tablet & stereo system.
Nonetheless, I would be hard-pressed on looking for a Bluetooth 5.2 headphone since 5.2 is a newer tech & likely be applied first on more expensive $100+ Bluetooth headphones. I'm not willing to spend more than $50 on a headphone.

Oh, well... I'm fine with waiting for a while. This isn't something I'm in a rush to get anyway.

 

[silentbogo]

1) Is there such headphones out there?
2) Is my current Bluetooth 4.0/4.2 headphones capable of doing this? If yes, how do I get it to sync?
3) What was my third question again? I forgot! Ah, yes...
4) If this is all not possible, is it the Bluetooth limitation?
5) What else... I guess this is pretty much my questions for now?

1. No. Bluetooth is point-to-point, so it's technically impossible. And if it was - you'll definitely get a really bad desync between sources.
2. No
3. also no
4. Yes. Any BT or RF is incapable of this.
5. Get a cheap audio mixer, hook up a bunch of wires to its inputs and a BT audio transmitter to the output.
Alternatively - just be a normal person and play everything on the same device. BT may not support multi-sourcing, but modern PCs/phones/tablets do support multitasking, if you weren't aware

 

[bug]

This is possible but I am also currently under the believe that is merely an urban myth.

Unfortunately, it's no myth. This is off-topic, I won't try to convince you here. But when you have some time, try to read up on it (use reliable sources, not facebook posts). A lot of health issues are like that: you slowly kill cells that don't grow back (right), but it can be years or decades before the effects are felt. If you enjoy loud music (hell, why wouldn't you?), try not to put it straight in your ear.

As for Bluetooth, it just doesn't work like that: https://en.wikipedia.org/wiki/Bluetooth#Communication_and_connection
A headset (slave) will connect to one source (master) and that's it.
What you need (mixing sources) is easily done in software on a laptop for example and then you can connect your headsets to the laptop doing the mixing. Unfortunately I'm pretty out of the loop, I don't know which software would be best for grabbing sound from multiple devices before mixing. I'm sure you can google that, tho.

Also, if you're really into music, do invest in a pair of good headsets. You'll be amazed. It's not hard to score a good pair for $200. You can also walk into audio stores and listen to various models before purchasing. In fact, I strongly recommend you do, sound quality is highly subjective, nobody and no amount of tech specs can tell you what sounds good to you.

 

[Rei]

Also, if you're really into music, do invest in a pair of good headsets. You'll be amazed. It's not hard to score a good pair for $200. You can also walk into audio stores and listen to various models before purchasing. In fact, I strongly recommend you do, sound quality is highly subjective, nobody and no amount of tech specs can tell you what sounds good to you.

As I mentioned in my previous post, I wouldn't spend more than $50 for a pair of headphones. This is the kinda mindset you'd expect from a working high school student. Sure, I can afford those, but with three shops to manage on these trying times, I gotta spend much less on personal items/needs & make sure that my employees are getting paid & happy. Plus, I also thrive on cheaper budget hardware.

Alternatively - just be a normal person and play everything on the same device. BT may not support multi-sourcing, but modern PCs/phones/tablets do support multitasking, if you weren't aware

While I have done it on my PC & laptops but unfortunately, it is would be limited to my bedroom & workroom respectively (can't really move my bulky & cable-infested laptop around). Also not possible on my Google Nexus 9 tablet since Android 7.1.1 is the latest supported version & Android Nougat doesn't support this sort of multitasking. On my Asus ROG Phone II with Android 10, it is possible but only on supported apps as well as limited to two simultaneous apps at the same time. That would leave one or two cores of my brain free.

Get a cheap audio mixer, hook up a bunch of wires to its inputs and a BT audio transmitter to the output.

Yes, I suppose this would be the best solution as it is right now. Thank you for the suggestion.

 

[bug]

As I mentioned in my previous post, I wouldn't spend more than $50 for a pair of headphones. This is the kinda mindset you'd expect from a working high school student. Sure, I can afford those, but with three shops to manage on these trying times, I gotta spend much less on personal items/needs & make sure that my employees are getting paid & happy. Plus, I also thrive on cheaper budget hardware.

I didn't say you should spend that much (much less spend it right away). Just be on the lookout and try to listen to such cans when you can. I know I was blown away. I discovered much more detail in tunes I was routinely listening. As a consequence, I learned why turning the volume all the way up isn't the way to go (details tend to get lost). I still listen to loud music (some tracks just beg for that), only less often. And only on my floorstand speakers.

TL;DR Don't spend money on other people's advice, but try as much equipment as you can.

 

[mahirzukic2]

Yeah, that's indeed a hard limitation, maybe there's an app for it??? Lol
But, can you run two sound playing apps? Like spotify with youtube?

Yeah, it's called VirtualApp, ParallelSpace or DualSpace.
It allows you to install a second instance of your application (e.g. PowerAmp) inside of protected environment, and when running this application, the system behaves as if these 2 were different applications (as they differ in name) even though they have absolutely the same functionality, i.e. are the same.

 

[silentbogo]

Also not possible on my Google Nexus 9 tablet since Android 7.1.1 is the latest supported version

Regardless of the purpose - you should update this dinosaur to Lineage OS 17(or at least 15).
Did that on my Nexus7 2012 awhile ago, as well as my "temporary" Tegra K1-based Mipad (with Shield tablet drivers). You are missing out on lots of features for this still quite capable tablet.

 

[SenditMakine]

Yeah, it's called VirtualApp, ParallelSpace or DualSpace.
It allows you to install a second instance of your application (e.g. PowerAmp) inside of protected environment, and when running this application, the system behaves as if these 2 were different applications (as they differ in name) even though they have absolutely the same functionality, i.e. are the same.

thank you my good sir

 

[Rei]

Yeah, it's called VirtualApp, ParallelSpace or DualSpace.
It allows you to install a second instance of your application (e.g. PowerAmp) inside of protected environment, and when running this application, the system behaves as if these 2 were different applications (as they differ in name) even though they have absolutely the same functionality, i.e. are the same.

thank you my good sir

+1 It works!!! Now parts of my brain won't be sitting on idle anymore. Thank you from me too!

Regardless of the purpose - you should update this dinosaur to Lineage OS 17(or at least 15).
Did that on my Nexus7 2012 awhile ago, as well as my "temporary" Tegra K1-based Mipad (with Shield tablet drivers). You are missing out on lots of features for this still quite capable tablet.

Do I need to root my tablet for that? I dunno how to root. I would also love for my Tegra-based Nexus 9 to last at least another decade.

 

[silentbogo]

Do I need to root my tablet for that? I dunno how to root. I would also love for my Tegra-based Nexus 9 to last at least another decade.

For Nexus devices there's a tool that does it automatically in 1-2 clicks. Plus many useful features.

Nexus Root Toolkit v2.1.6 | WugFresh

www.wugfresh.com

K1 is still quite snappy, considering how old it is. Heck, even Tegra 3 is more than capable to run 99% of the modern stuff, though with abysmal battery life and lots of heat.
I really want something based on X1 or X2, but can't find one for cheap. Pixel C is getting near the "comfortable" price point on a used market, but still a bit too much for a 5y.o. device (almost as much as a brand-new SD662 tablet, or a used iPad from the same year)

 

[Rei]

For Nexus devices there's a tool that does it automatically in 1-2 clicks. Plus many useful features.

Nexus Root Toolkit v2.1.6 | WugFresh

www.wugfresh.com

Thanks! I'll give it a try & see how it goes & report tomorrow.

K1 is still quite snappy, considering how old it is. Heck, even Tegra 3 is more than capable to run 99% of the modern stuff, though with abysmal battery life and lots of heat.

I know. That is why I picked Nexus 9 as it is Tegra-based. I just somehow prefer it over Snapdragon. Originally I also wanted to find Tegra Note 7 (which uses Tegra 4) but couldn't find one used/second-hand. I do recognize that Tegra is a high draining SoC that outputs lotsa heat which is likely why it no longer is the SoC of choice for smartphones.

I really want something based on X1 or X2, but can't find one for cheap. Pixel C is getting near the "comfortable" price point on a used market, but still a bit too much for a 5y.o. device (almost as much as a brand-new SD662 tablet, or a used iPad from the same year)

I don't think there is any mobile device that uses Tegra X2 which makes Pixel C the latest mobile device based on Tegra X1.

 

[silentbogo]

I don't think there is any mobile device that uses Tegra X2 which makes Pixel C the latest mobile device based on Tegra X1.

Technically Nintendo Switch, and there are ubuntu ports for it as well. Not 100% sure, but probably based off L4T, so 3D acceleration, NVenc and CUDA theoretically should work.

 

[Caring1]

While it's not proof, the intention of this thread should be pretty telling.
I guess I have that "super rare thing". In fact, a while back, I was under the impression that this is a pretty common thing, that just about everyone is also capable of. Apparently not...

I'm similar in that my mind seems to be constantly working and needs the stimulation or I get bored.
I'm often reading the forums, chatting on Skype, playing on an iPad and on the PC, and watching TV all at once.
And that's only when I'm sitting at my desk, otherwise I'm busy doing something when I'm up and about.