[alsa-devel] usb audio alsa driver

hi I was for our devices under linux audio alsa driver, I encountered a lot of trouble now, please help me. My audio device is this: usb interface types, transmission of data through the INT endpoint, each 64 bytes, read out the PCM audio data stream, the sampling rate is 22,050, a single channel, I have the debugging information data crawlers , but I am under no voice in skype, you can tell me the possible reason? Or give me some recommendations, I am very anxious, I would like to thank.I sent my driver, please help me show you, thank you