I understand that you are attempting to transmit an MP3 file through a communication system that employs FM Broadcasting in conjunction with the ADALM-Pluto, but you are encountering noise at the output.
Upon reviewing the model snapshot you shared along with the block parameters, I noticed that the Gain values specified for the ADALM-Pluto Transmitter and Receiver are different (0 for Transmitter and 10 for Receiver).
Such discrepancies can lead to the transmission of a weak signal, resulting in noise at the receiver output. To address this issue, consider providing a consistent Gain value at the Transmitter.
Further, ensure that your cable connections are secure and free from any loose fittings. In many cases, noise at the output is attributed to insecure connections.
I hope this helps.
