Altoids Tin 1/8" Stereo Mixer using a 3.5mm 4 pole conductor (mic + audio)?
3 - 4 pole Audio in (iphone, macbook, ...)
1 - 3 pole Audio in from computer
1 - Mic in from computer
1 - RJ10 (so I can use my headset with my cisco phone)
The audio mixing is basically the same as Rich's write up. But im not sure if I can just split the mic to everything. If I am sacrificing mic volume by splitting to every input I could limit it to the CPU mic and the RJ10.. the ones i really want.
Please let me know any ideas or advice you have.
Here is my purposed schematic: