Saturday 6 December 2014

headphones - Why are there not more incompatibilities in 3.5mm audio jacks?


I use 3.5mm audio jacks for my boom box, laptop, android phone, iPhone, iPod Touch, portable personal analog FM radio (no external speakers), and my classical sound system on a shelf. I assumed that the signals were standardized, but Wikipedia says there isn't a single standard, though there do seem to be a bunch of standards followed by different companies.


When I google audio headphones with 3.5mm jacks, they typcally don't specify the conductor assignments. It seems like it should be the luck of the draw whether a headphone is compatible with a given device. Why are there not more incompatibilities devices and headphones with 3.5 mm jacks?



Answer



Headphones (without microphone) only use the 3 pin (stereo) type jack and these are all wired the same.



The assignment for the 3 left/right/ground conductors is standard.


The different standards relate to the 4th connection on headsets (with microphone). On an incompatible device, this is either unused or grounded.


So there is no "lucky draw" otherwise there would be a market for adapter leads to connect your headphone to a certain device. And there isn't as the worst that can happen is that the microphone doesn't work. An adapter cannot solve that anyway.


Then you'd need to use a headset from another manufacturer, preferably one from the same manufacturer as your device.


enter image description here


No comments:

Post a Comment

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...