My station saves all IQ files to my Dropbox account. To save storage space and bandwidth, the IQ files are compressed with xz.
Now that iqzip is available, I thought I’d see if I could switch to iqzip instead of xz. I compiled and installed the iqzip library, and the iqzip example app. I then tried compressing a wav file:
~/iqzip/apps/build/iqzip 4060852_NANOCONNECT-2SAI-1.wav 4060852_NANOCONNECT-2SAI-1.wav.iqz
The result was a slightly larger file:
-rw-r--r-- 1 pi pi 63M Dec 7 15:41 4060852_NANOCONNECT-2SAI-1.wav -rw-r--r-- 1 pi pi 64M Dec 7 15:42 4060852_NANOCONNECT-2SAI-1.wav.iqz -rw-r--r-- 1 pi pi 43M Dec 7 15:40 4060852_NANOCONNECT-2SAI-1.wav.xz
I expected a file that would be smaller than the original file. Maybe not as small as the xz file, but I expected some sort of compression.
Is this not the right way to use iqzip?