Hi Folks. I know some of you know your way around electronics, I was wondering if you can point me in the right direction. Just to be clear from the start, for this setup I do not want a conventional or portable mixer. Scenario: an ipad + laptop with audio interface. I want to use single headphones to audition both.
Ipad and laptop interface both have 3.5mm stereo outputs. Headphones also 3.5mm. Smallest footprint is the key. I know small mixer will do it, but I do not want to do that for this setup. Also I do not want to use input of the interface, because it would require connecting a mighty breakout cable. If I use a plain, "passive" multi input splitter, the sound will bleed and distort (clicks) the output that comes from the pc interface to headphones.
Is there a discrete splitter or adapter that would prevent sound/signal bleed? I do not care for adjustable volume levels of the mixer I can adjust these at source. This is not for recording or anything remotely professional., just so I do not plug / unplug things 100s of times. Not even sure what I should look for to accomplish this... Hopefully nothing powered... some sort of inline filter? The simpler - the better
What you are asking to do is the very definition of a audio mixer. Here is a very tiny passive audio mixer. Little Bear MC5 Mini Portable Stereo 4 Channel Audio Mixer Passive Live Studio Console Recording Low Noise (No Power Needed) $30 dollars. At least with Amazon you can send it back if you don't like it. It has 3.5 mm inputs and outputs. Fits in the palm of your hand. It would require a cable from each device.
There are some two channel ones from China for around $13 dollars but they need battery power and it is a bit hard to understand how they work without a schematic.
This web site shows how to build one so you can see that it is not a simple thing to do.
I am assuming stereo coming out of both of your devices.
There may be other ways to do what you are asking for that I don't know about. Video Track may know a better answer.
Billy
EDIT: After reading your post a couple of more times I am not sure just what you are trying to do. Please explain.
Last edited by Planobilly; 07/10/2108:49 AM.
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig? “Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”
Billy, It is easy. There are couple of chord & harmony exploring apps that I use and they are only available on ipad. I use such apps as reference tools when building out a progression in BIAB... I need to be able to "hear" those apps while I use BIAB. Also, it has to be through headphones. So, two separate outputs to single headphones.
Yes, I looked at that "little bear" mixer earlier. Cheap enough, but... I was hoping there is some sort of special and basic (without knobs etc) Y cable with resistor or such, that would prevent one output leaking signal to another, because that is what I am getting if I use a splitter similar to the one in attachment and it creates clicks/distortion. Maybe there is no such thing. I do not know
The problem with splitter connectors is they change the impedance, or how much of a load is placed on each headphone circuit. An analogy would be connecting equipment that draws a lot of electricity (like a heater or hair dryer) to all the connections on an electrical extension cord and using them all at one time. The extension cord would overheat and the electrical circuit shut down. That is what the splitter is doing, just on a smaller scale.
The passive mixers match each output to the equipment connected. The overall audio volume is lower because the volume is directed to multiple locations but the audio shouldn't break up because the output matches the equipment.
One alternative is to search for a pair of wired surround sound headphones. Wired surround sound headphones have multiple input cords sending multiple audio signals to multiple left and right drivers, or speakers.
I found some blue tooth surround headphones but they require a blue tooth transmitter per device and latency is an issue.
Perhaps there is a way to do what you want to do that I am not aware of.
Are you needing to inject the signal from the ipad into the computer or just listen to it?
What are you using the interface connected to you computer for? Mic? Instrument?
Are you typing the chords/chord progression into BIAB?
I am still not clear on what you are actually doing.
Billy
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig? “Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig? “Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”
Come out of the phone into a mixer, and out of the headphone jack of your interface. That will result in the inputs from both sources being the same impedance. But as Billy said, this is the definition of what a mixer does. You can buy a small scale mixer like this
I really do not want to overcomplicate things Question might seem strange, but the point is actually to make things simpler, to cut away traditional or mini mixer out of the equation.
Billy you want to know my trade secrets? (joke) I type in chords into BIAB. There are couple of very useful ipad apps for exploring chords and how they sound, and also a harmony mapping app that lets you experiment on the fly and suggests ways progression can be accomplished. If I am doing something that I am not familiar with, I would do it "by ear" using ipad apps. But one thing is hearing basic chords and another is how BIAB Rts will interpret them within arrangement, so sometimes I would make a lot of changes going back and forth just to find path that I feel is the one that I want.... Plugging and unplugging headphones from interface to ipad. I do have proper setup where I record, a studio space if you prefer, but most of musical sketches I do is through a different, a smaller interface that does not have stereo input for monitoring.
The "little bear" that Billy mentioned will do what is needed, I was actually looking at it yesterday as an alternative, but I was thinking there something even more simplistic is readily available.
A headphone amplifier is what you're looking for. This cheap Behringer accepts two inputs and has 4 output channels that are eight outputs as they're duplicated on the rear panel. Each output is selectable between the two inputs with a push button. Ipad into input A and Laptop into input B
Charlie thanks! I went with your suggestion, but my own way. Seems there is no easy way out not getting some sort of mix box. Found a cool looking, non-powered (!) small mixer that has impedance adjustment and bunch of other, perhaps useful buttons. Pokket Mixer Mini DJ Mixer...
Charlie thanks! I went with your suggestion, but my own way. Seems there is no easy way out not getting some sort of mix box. Found a cool looking, non-powered (!) small mixer that has impedance adjustment and bunch of other, perhaps useful buttons. Pokket Mixer Mini DJ Mixer...
Found a pre-owned cheap. Will post back with results
Glad you got it worked out. That little device should do the trick. It certainly won't take up much space and the input/output plugs match well with your input devices so you don't need to add any adaptors. Do let us know the results you get with it.
In Rustyspoon's scenario, this summing amp would not work because it functions just as a mixer and if you examine the three inputs, they are summed (merged, mixed) with no way to mute two inputs to hear one or to then switch to another input.
As others have pointed out, passive signal splitters don't isolate the signals from each either, they mix the input signals into a single output.
The Behringer headphone amp is not a mixer. The two inputs are discrete and isolated from each other and only one input can be selected at a time. A user selects which input to feed the headphones with a push button switch. The two signals are not internally mixed and the signal level can be controlled from the source or the headphone amp.
According to the video Misha posted, the Pokket DJ Mixer can select between left and right input or mix between the two. It's the best of both worlds.
Well, If you only need to hear one device at a time...here is the answer.
LOL
Billy
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig? “Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”
Keith, Thank you for shielding my initial request of trying to avoid mixer
Eddie, I spent over an hour trying to search for just a splitter that would have some sort of resistor (?) that would prevent signal leak into output of interface. But could not find anything remotely close to what I was looking for..as I was not sure WHAT I am looking for... So if even Jim, Billy and Charlie could not suggest something readily made and simple to the bone, I bought what I bought. Who knows, maybe because it is unpowered I will run into same issue of signal leaking. Will post back when I get it.
The Audio Switch Box is a bit more modern looking but it does exactly the same thing as my switch.
Due to the fact the headphones work well with both devices there are no impedance issues.
To go from one device to the other requires a switch. That switch could be as simple as unplugging and plugin in the headset...that is what you have been doing and controlling the volume with the device.
To listen to both devices at the same time requires a mixer. of some sort.
What is the Ipad software you are using? It would be fun to take a look at.
I tend to play in key for the most part and have a pretty developed sense of what effect certain chords will have. The demos in BIAB in various styles will give you many good ideas about chord progressions.
Billy
“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig? “Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”
A Y cord. Although, you risk releasing the magic smoke if things disagree with each other in a substantial way.
As long as the power level is low, the worst case scenario is it doesn't work or acts peculiar.
You're feeding two outputs into the same thing and tying them together electrically when you use a Y cord.... but I seem to recall doing something like this when I was younger and didn't have the resources to buy the right tools for the job. I'm still alive and I have all 10 fingers..... so it must not have been a total disaster.
You can find my music at: www.herbhartley.com Add nothing that adds nothing to the music. You can make excuses or you can make progress but not both.
The magic you are looking for is in the work you are avoiding.
Cari amici
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