Abstract

GNU Radio is an open source software-defined radio project, whereas the Universal Software Radio Peripheral\n(USRP) is hardware which is used with GNU Radio. These two technologies have been used to implement very sophisticated\nand low cost software-defined radios. In this paper, Audio transmission using Narrow Band Frequency Modulation will be\nimplemented on the Pre-stored audio file by utilizing the Software Define Radio (SDR) platform which consists of GNU\nradio and Universal Software Radio Peripheral (USRP). Audio Transmission using SDR approach is easy to implement as it\nis basically block diagram based and not requires any circuitry.