This is an excellent suggestion. An envelope filter set for a mild low end gurgle and not a duck quack can sound gangbusters for a 70's R&B sound. The song "Dazz" by Brick comes to mind.
Thumpin', Pumpin' Funk 'n' humpin' that track's somethin'!
Thanks for postin' that lil ditty, JimmyM, you get "Ear of the Year" award – I couldn't in a million eons tell anyone how to get that sound. Going to try to get a gurgle out of my M5 ...
Ace, pick up a used Zoom B3. $150.
Hook it up to your computer, via usb (powers the B3),download the editor, put on your headphones and go.
Turn on your music, through the B3, cop the tone, learn the song, practice it with the drum machine, or loop the chord progression with drums or a click. Sit outside and play on battery power. Use it direct into a mixing board.
The thing is like a Swiss Army knife, for less than the cost of a single boutique pedal. You'll learn a ton about how all kinds of effects work.
The more I mess with mine, the more I like it.
Dang! I had one lined up used for cheap, but passed on it after splurging heavily on some stuff I needed (exp/vol EQ) and a bit more on stuff I wanted (Dirt 2, analog delay, yet more chorus). Now I'm regrettin' not gettin it 'cause I wanted to play around with its looper too. C'est la vie, I only had so much cash, and the other stuff (apart from the chorus) was brand new stupendously good dealage mega-sale stuff.