The following is an ad for the Tyros 2 which I think sheds a little light on the "4 Layer" keyboard. I think it should be advertised as 4 part multisampled which is what you get with high end soft and hard samplers.

This means that they would sample (for eg) each piano note with a soft strike then a medium strike, then a hard strike and also a very hard strike as it's not just the volume that changes but the tone/timbre as well. this is probably more true of other instruments like reed and brass but that's the general idea.

It is basically how they already implement the megavoices by allocating a different sample for a number of dynamic ranges

The ad also mentions new organ voices !!!!


AD READS AS FOLLOWS:
"The most eagerly awaited keyboard of all time is about to be launched in the UK. The Tyros 2 has some amazing new sounds and functions and will be an instant hit with the professional keyboard community. The Yamaha Tyros 2 will be available by October. Please place your order now to avoid dissapointment.

new hard disk audio recording with optional HD for studio quality CD creation.
new sample playback
new organ section voiced in the UK
Direct USB connection
new super articulation voices which use multiple samples per note and also change the way they react depending which notes you have previously played!
dual RGB output for TV/ monitor connection connection
new drum sounds and styles
400 Styles
textviewer. Import textfiles, for lyrics, and show in the screen. Hit a footswitch to turn page
new mega voices"

Price £2199
.........................


Regards - Keith


[This message has been edited by KFingers (edited 09-07-2005).]