[LAU] Connect pipewire to running JACK server

[Paul Davis]

On Fri, Jan 28, 2022 at 8:24 AM Fons Adriaensen <fons at linuxaudio.org> wrote:

> On Thu, Jan 27, 2022 at 08:20:29PM -0700, Paul Davis wrote:
>
> > To do a linear speedup, you would gradually reduce the time between
> notes,
> > maybe like this: 0.5, 0.45, 0.40, 0.35, 0.30 and so on
>
> That would be a linear interpolation of beat _duration_.
>
> The alternative is linear interpolation of beat _frequency_.
>
> The result of this will be very close to exponential, for
> a reasonable relative tempo change (in the range 1/2 to 2/1).
> Outside that range, and if the ramp takes more than a few
> seconds I wonder if humans will do exponential accurately
> enough for the difference to matter at all.
>

For Ardour, we have generally used this as a reference paper:

https://quod.lib.umich.edu/i/icmc/bbp2372.2007.004/1

with a modified version of the equations (basically switching between
duration and frequency)

https://github.com/Ardour/ardour/blob/master/doc/tempo.pdf



>
> --
> FA
>
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