The Yamaha AN1x Synthesizer mailing list

--- In AN1x-list@y..., "thestudiolife" <dreinstein@e...> wrote:
> 
> Unfortunetly I still cannot enable an effect by selecting the 
> environment buttons and faders.  I still hear I pause in the 
audio 
> (like when switching programs) but no effect change. I checked 
the 
> AN1x and noticed that I was getting a midi buffer overrun error 
on 
> the AN1x (or something like that).  I can however change the 
effect 
> in the AN1x and use the environment to change the 
parameters of the 
> effect, but I have to select the correct environment fader for that 
> effect.  It's strange that I am getting the midi errors.  Maybe it's 
> a unitor in fast mode or USB issue.  
> 

Okay, let me repeat back to you what I understand to be the 
issue. Correct me if I'm wrong:

When you select a Variation Effect in the Logic Environment the 
AN1x expereinces a midi buffer overrun error and does not 
automatically change to the new Effect. However, you CAN alter 
Effect parameters from the Logic Vari Environment layer channel 
strip(s) *if* you've pre-selected the Effect on the AN1x. Correct?

Since this specific environment layer relies almost entirely on 
SysEx it's not surprising that you would experience an error at 
some point. Using SysEx for real time adjustments is a dodgy 
proposition on ANY synth as SysEx consumes much more of the 
MIDI bandwidth then simple MIDI CC messages. The fact that 
AN1x SysEx packets are large (by design) to begin with does not 
help matters. I would strongly recommend you disable FAST 
Mode on the Unitor. This may be USB related issue but 
considering the track record of success, in general, AN1x users 
have experienced with Emagic MIDI Interfaces this is the best 
place to start.

I've been running an Opcode Studio 128x in MTP emulation 
mode for months and have had minimal problems with SysEx, 
Logic and the AN1x. If I find the time this week I'll try to switch the 
Studio 128x into FAST mode instead and see if I can recreate the 
failure you report. I suspect I may have to fall back to using OMS 
w/ Logic Audio for FAST Mode support.

regards,

Jon