luckyali
Member level 5
Design Audio Encoder - Decoder in Simulink
Dear all,
I would like to transmit an Audio file over the Air and Receive at other end... for this Purpose, I just took
1. a simple audio file from computer => Up-sampled to 8 KHz and then=> Re-sampled to the device frequency (USRP i.e 200 Khz) => FM modulated and transmitted via USRP,
2. at RX Usrp, downsampled, FM demodulation and FIR decimated...
Problem: the received signal is of course delayed, too noisy and not clear. Can any one give some suggestion like putting some filters or any thing else to do in interpolation-decimation etc to recover the signal....
Dear all,
I would like to transmit an Audio file over the Air and Receive at other end... for this Purpose, I just took
1. a simple audio file from computer => Up-sampled to 8 KHz and then=> Re-sampled to the device frequency (USRP i.e 200 Khz) => FM modulated and transmitted via USRP,
2. at RX Usrp, downsampled, FM demodulation and FIR decimated...
Problem: the received signal is of course delayed, too noisy and not clear. Can any one give some suggestion like putting some filters or any thing else to do in interpolation-decimation etc to recover the signal....
