if you could pick a standard format for a purpose what would it be and why?
e.g. flac for lossless audio becauseā¦
(yes you can add new categories)
summary:
- photos .jxl
- open domain image data .exr
- videos .av1
- lossless audio .flac
- lossy audio .opus
- subtitles srt/ass
- fonts .otf
- container mkv (doesnt contain .jxl)
- plain text utf-8 (many also say markup but disagree on the implementation)
- documents .odt
- archive files (this one is causing a bloodbath so i picked randomly) .tar.zst
- configuration files toml
- typesetting typst
- interchange format .ora
- models .gltf / .glb
- daw session files .dawproject
- otdr measurement results .xml
Something for I/Q recordings. But I donāt know what would do it. Currently the most supported format seems to be s16be WAV, but thereās different formats, bit depths and encodings. Iāve seen .iq, .sdriq, .sdr, .raw, .wav. Then thereās different bit depths and encodings: u8, s8, s16be, s16le, f32,ā¦ Also thereās different ways metadata like center frequency is stored.
God damnit. I wrote an answer and it disappeared a while after pressing reply. I am lazy to rewrite it and my eyes are sore.
Anyway, I am too dumb to actually understand I/Q samples. It stands for In-Phase and Quadrature, they are 90Ā° out of phase from each other. Thatās somehow used to reconstruct a signal. Itās used in different areas. For me itās useful to record raw RF signals from software defined radio (SDR).
For example, with older, less secure systems, you could record signal from someoneās car keyfob, then use a Tx-capable SDR to replay it later. Ta-da! Replay attack. You unlocked someoneās car.
In a better way, you could record raw signal from a satellite to later demodulate and decode it, if your computer isnāt powerful enough to do it in real-time.
If you want an example, you can download DAB+ radio signal recording here: https://www.sigidwiki.com/wiki/DAB%2B and then replay it in Welle.io (available as Appimage) if itās in compatible format. I havenāt tested it.
