Hmm... I don't know... that's cool but it doesn't look (nor sound) as a typical samba bassline to me. Most of the times, the bass follows the pattern played by a brazilian bass drum (can't recall its name right now), which is a dotted quarter note plus an eighth note twice in a
cut time measure. I've transcribed the bassline for a famous (I think the most famous) samba tune: "Brazil". That's the way I play it and it works like that for most samba tunes (Well, I came up with a two-bar slap riff played six times in measures 22-23 and maybe it isn't that typical, but trust me, it sounds pretty cool there). Don't forget that it's in cut time: Two beats in a bar and each beat is a half note (130 beats per minute). Hope this helps.
