Yamaha DTXpress/DTXplorer/DTXtreme

Dan,


I had the same problem.  What i think is going on is that the DTXpress
internal memory management gets corrupted.  The solution is to reset the
machine by using the sequence of button pushes detailed in the manual.  You
will lose all custom patches unless you save them via sysex 1st.  You can
load them back in after the reset.  They will still work and the pops will
be gone.

Best,
Rich
Unique Sample CD Roms, Loops and SoundFonts
   Main site:  http://www.tweakheadz.com
  MP3 files:  http://www.mp3.com/tweakheadz

----- Original Message -----
From: "Dan Mowczan" <pinball@...>
To: <DTXpress@egroups.com>
Sent: Saturday, January 13, 2001 8:42 PM
Subject: [DTXpress] MIDI transmission causes noise?


> I recently purchased a Roland UM-1 USB Midi interface so I could get some
> communications working with my PC for storing drum kits.  It's a cool
little
> interface, and fairly inexpensive ($49 at Edirol's site) if you want a USB
> type.
>
> Of course, the driver is crashing my Mac.  But, that's another story.
>
> I threw the driver on a PC and started working immediately.  I pulled up a
> MIDI file of some Piano and it played beautifully, except there was a
> cackling coming from my amp, kind of a static or popping sound.  At first
I
> thought 'Boy, these are some bad GM sounds', but after then downloading
some
> kits from DTXpressions to play with, I hit the 'Send' key on DTXchange and
> during the entire send, the popping was occuring, this time at a much
faster
> speed, but only for the two seconds or so required to receive the kit.  It
> seems that any MIDI data received causes an audio glitch in the outputs.
> The transmission worked properly, however.
>
> Then, I noticed anytime MIDI was hooked up, there is a slight ticking from
> my DTXpress brain in the neighborhood of 240-260bpm.  Disconnecting the
> Roland UM-1 from the MIDI cable, effectively powering it down, stops the
> ticking.  Shutting down the computer but leaving the cables connected also
> stops the ticking.  When the windows driver is running, the ticking
occurs.
>
> Finally, I did a bulk dump of data from the DTXpress brain.  This I can't
> get to work at all.  The PC doesn't simply doesn't seem to see any data.
> During this, I get no popping or static through the amp however.
>
> In frustration, I swapped the MIDI cables in and out in case I did
something
> wrong, which didn't do a thing, but when they were swapped, I was getting
a
> significant ground hum from my Amp that I wasn't before.
>
> Any ideas on what's causing this?  I also can't seem to detect any of this
> through my headphone jack, but based on the volume output on it, I can't
say
> for sure if it is there or not.
>
> -Dan
>
>
>
> --
> Dan Mowczan, pinball@...
>
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