Listen to this MP3
(but not at work - and turn up the volume before doing so).
That is the Canon EOS 1D X
capturing 54 buffer-filling RAW frames at 12 fps with additional frames captured as the Lexar Professional 1000x 32GB UDMA-7 CompactFlash Card
clears the buffer (replay the sound track if the beginning appears to stutter).
I'd make this my new ringtone if I didn't think the sound was too unresting for such.