My experiment platform is ADI linux + Xilinx zc706，and I want to achieve transmiting the voice people say out real-time,so I use the example from the board -fmtransmitter.grc ,the flowgraph as follows:
and than I buy a device called usb.2.0 audio converter to receive the voice I say out (to be used as a microphone)
But the question is after I connect the device with the board(insert the device with usb interface). The example tested to be feasible didn't work such as fm-transmitter.grc and fmradio.grc. And I changed a SD inserted the zc706board ,the situation happened again.So can you tell me what is the key problem? I am hurry to receive your answers.