junk (with or without header)
PCM_SIGNED 8000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian
-r 8k -t s16 -c 1 -e signed-integer


out (without header)
PCM_SIGNED 8000.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
-r 128k -t s32 -c 2 -2 signed integer [reasonable]

out (without header)
PCM_SIGNED 192000.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
-r 192k -t s16 -c 2 [-e signed-integer]