.fmt

WAV format chunk describing sample rate, channels, and bit depth in RIFF waveform audio

Not a file (scheme/atom)

Format facts

MIME type: application/x-fmt
Apple UTI: custom
Stock Quick Look: no stock preview
Planned approach (census): not-a-file
Icon hint: generic-icon
Prevalence: rare

Renderer note (from the census)

parse fmt chunk for sample rate and bit depth

Gotchas: WAV audio header