CM102-A+ schematic for HeadPhone USB-audio

一个DTMF的解码源代码，可以直接运行在Android 1.6以上的版本上，如果需要测试效果需要利用两根带MIC的耳机线做成两端3.5MM音频口直连，发射端直接用手机拨号即可看到另一端能解出相应的按钮-A DTMF decoder source code, can be directly run on Android 1.6 or later on, if the need to test the effect of two with MIC headphone cable made both

android小车与意念耳机结合的的控制程序比较简单，但是结构分明能通过程序大体了解控制的过程-android trolley and ideas headphone combination control procedure is relatively simple, but structured by a program general understanding of the control of the process

android平台音视频即时通讯源代码,通过手机的耳机接口进行数据的传输-android platform audio and video chat source code, data through the phone s headphone jack transmission