Wolfgang<br><br><div><span class="gmail_quote"></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Judging from the high-resolution picture on the wiki it looks like the
<br>phone has a very special 2.5mm connector with 4 separate electrical<br>connections (instead of the more common 3-connection version). If I'm<br>interpreting this correctly they are running both ground,<br>left-earphone, right-earphone and microphone in one plug. To me, this
<br>seems much more convenient than the 2x 3.5mm plug method used for<br>computer headphones.</blockquote></div><br>hopefully it is a 4-conductor connector. unfortunately there are two ways manufacturers commonly wire up the 4-conductor
2.5mm connector. I have a set that is wired for the palm way of doing it that I plan to try.<br><br>Nokia ships 4-conductor 3.5mm stereo headphones w/mic with their n800. The jack is backward-compatible with 3-conductor headphones. It's the first time I've seen a
3.5mm plug that could work with a microphone. It just might take a while to catch on.<br><br>On the a2dp front, we got some help from Nokia on our codec and now it's running nicely in (mostly) 32-bit ops. It should be pretty easy for the cpu to encode stereo audio on the fly, but there is still a delay that we need to accommodate.