Comment 2 for bug 625051

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On 09/03/10 12:51, Henrik Rydberg wrote:
> Mtdev already contains a EWMA filter, with defaults sensible for devices
> with moderate signal-to-noise ratio. For this particular device, which
> is very noisy, it should suffice to add proper fuzz parameters in the
> kernel driver, and mtdev will pick them up.
>
>
> ** Changed in: mtdev
> Status: New => Incomplete
>

I've used the fuzz parameters in unpushed versions of hid-ntrig. My
understanding was that it only works for the conventional events and the slotted
protocol. Are you saying you just read the fuzz from each device and then
provide the same filters in userspace/mtdev for mt events?

Ah, emwa== fir/low pass, makes sense. Does mtdev smooth single
touch/conventional events too, or only clean up the mt events?
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