Yamaha DTXpress/DTXplorer/DTXtreme

--- In DTXpress@yahoogroups.com, "Keith" <keith@k...> wrote:
> I don't see any conflict.  The threshold I am putting in the magic 
box
> is just a minimum level below which the rim switch will not switch. 
> Ideally this will be set low so you can play very gentle sounds on 
the
> pad connected to the rim input.  The only reason for needing it is
> rack vibration from the pad on the SAME input affecting it.  If the
> threshold is set low you will still get a wide range of volume 
inputs
> depending on how hard you hit it.  It should still allow the DTX to
> change its sound based on velocity. 

Hi Keith,

I had it in my head that the box and module could potentially be at 
odds, but now I see my mistake. Just to summarize the 
point, "Rejection" in the Yammie modules has a distinct influence on 
how much gain (and velocity) it takes for a pad to make a sound. High 
gain and low threshold mumbers make a pad more likely to suffer 
crosstalk than low gain and high threshold, although in the latter 
situation, the pad is also less likely to make a sound when desired. 
If you build an adjustable "rejection" into the box to take care of 
the "rim" pad, the same, presumably, would be true, but c'est la vie.

> One question, when things refer to "velocity" do they really mean it
> or is it based on how hard you hit it, which is not necessarily the
> same thing (amplitude would probably be a better term than 
velocity)?
> Velocity seems limited by the natural resonance of the piezo itself,
> but amplitude depends on how hard you hit it.
--- In DTXpress@yahoogroups.com, "Keith" <keith@k...> wrote:
> One question, when things refer to "velocity" do they really mean it
> or is it based on how hard you hit it, which is not necessarily the
> same thing (amplitude would probably be a better term than 
velocity)?
> Velocity seems limited by the natural resonance of the piezo itself,
> but amplitude depends on how hard you hit it.

Velocity has come to mean the force with which a pad is hit. As a 
MIDI term, it really isn't about piezos at all; it's just one part of 
the note description sent to a MIDI-capable tone generator. As so 
often happens, the term has shaken loose a bit.

Ed