Any tap tempo device is tricky, simply put you probably won't be able to tap consistently enough to keep the figure consistent. Which is why a lot of commercial tap tempos have some form of averaging algorithm. With a bit of practice you can get close enough to match existing music for maybe 4 or 8 bars. Here's the clever bit, if you're working with live (electronic or acoustic) musicians they will usually start to sync up to drums in this time, assuming they're close to the original tempo.
Have you had any luck in building a step sequencer, by the way?
> From: mr.spoon21@gmail.com
> Date: Sun, 14 Mar 2010 14:26:47 +0100
> To: james@4thharmonic.com
> CC: pd-list@iem.at
> Subject: Re: [PD] Using Pd to play drums in a band
>
> On 14 March 2010 13:42, James Dunn <james@4thharmonic.com> wrote:
> > Quoth Carlo Trimarchi, on 14/03/10 11:30:
> >
> > Not sure if this is the best way but it might help you. It uses [demux] from
> > the zexy library. Hit the spacebar to tap out a tempo.
>
> Thanks for your interest (and also thanks to Andrew Faraday who
> replied directly to me), but I think these tapping methods are hardly
> working fine for me. Maybe it's me - I'm unable to tap at the same
> time - but every tap it displays a different number. I have to think
> something else, maybe.
>
> Anyway, I'd like some starting point to implement a drum machine or a
> step sequencer. Maybe some existing patch or some particularly useful
> tutorial or argument.
>
> Thanks again,
> Carlo
>
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