I can create a digital audio file with the following command:
dd bs=1k if=/dev/audio > audiofile
I surmise that this is a raw file with no header. I can play it back by catting the file to /dev/audio, but I want to import it into Audacity, which requires me to know parameters like sample rate, bit resolution format, and endian.

What Linux commands will tell me this information on the audio card?