converting IQ audio files using sox

To get information about a file:

# sox --i 10meter96.wav

Input File : '10meter96.wav'
Channels : 2
Sample Rate : 96000
Precision : 16-bit
Duration : 00:00:16.50 = 1584387 samples ~ 1237.8 CDDA sectors
File Size : 6.34M
Bit Rate : 3.07M
Sample Encoding: 16-bit Signed Integer PCM


To convert the sample rate:

# sox 10meter96.wav -r 44100 10meter44.wav

More useful hints about sox by Selvaganeshan at “The Geek Stuff”

Here are the commands that worked to get the raw IQ data from rtl_sdr into Max

rtl_sdr -f 94900000 -s 1024000 -g 50 iq.raw

To convert the above to 96k 16bit wav format

sox -e unsigned-integer -r 1024k -t raw -b 8 -c 2 iq.raw -r 96k -b 16 iq.wav

Note: I could not get the above conversion to work with device sampling rates below 1024k. Didn’t try anything higher.