[FFmpeg-user] transcoding mp3 to wav

[jd1008]

Hi, I tried to transcode a few mp3 files to wav using the command

for f in *.mp3; do
ffmpeg -i "$f" -ab 1600k -y ${f%mp3}wav
done

it does the conversion, but does not honour the bitrate param.
How do I force the bitrate param for the ourput?