Re: [Hydrogen-devel] cvs commit: fixed tempo drift bug

[Comix <ac...@ti...>]

Jesse Chappell wrote:
> As discovered today by montcoder on IRC when using hydrogen with
> jack transport (and ardour), hydrogen's beats were drifting over
> time.
> 
> After analyzing the situation, I discovered that we had rounding
> inaccuracies due to keeping the internal ticksize as an integer
> and using it for all frame position calculations.  Changing the
> ticksize to float fixed the problem, and hydrogen is now accurate
> across all time.  Whew!
> 
> To prove to yourself it was wrong before, just start up a 
> 'jack_metro -b 120 -t' , then a hydrogen (put cowbells on the 4 downbeats)
> and enable jack transport.  then run 'jack_transport', and roll.  it will 
> sync right at the beginning, but do a locate command in jack_transport to 
> a sample position far in the future and hear how off it is.  
> Then repeat with the freshly compiled cvs with the fix.... and
> see how on it is :)
> 
> This is a fairly important thing to get right, so i recommend a
> new release as soon as possible.
> 
That's great!
well done Jesse! :)

The release is almost ready, I'm waiting for the last translation and 
then I will create the tarballs.

Ciao

-- 
Alessandro <Comix> Cominu

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