Hi Richard.  By the way, I have been enjoying your roll scans! (I found
them at John Roache's site).  Looks like you finally built a working
device.  Maybe you could share how it works?

I have a _bad_ need for a roll scanner!  (Like, I really need more
MIDI files -- I have almost 1500 piano files!)

Let me try to explain how I got the piano to play via CB.

QRS's Pianomation CDs are recorded in what is called an analog
format.  If you put the CD in a CD player with speakers, you just hear
a bunch of squeaking and squawking.  But if you hook up the left
speaker to the 'analog in' connection on the Pianomation, the unit
can turn the squeaks and squawks into MIDI information (and the piano
plays).

Here is my thinking on this: the 'transmitter' must be able to convert
MIDI to analog.  Since analog is just digital audio, any program or
transmitter-receiver capable of audio should be able to do that.

I think QRS sells a device that will do that.  I will check into it.
here is a simple diagram of what I mean:  Transmitter, MIDI in/convert
to analog audio program capable of establishing connection between
the two net/RF or Phone line, analog/MIDI out.

So you see, you can play a MIDI keyboard, it converts the information
to analog,  the medium carries it to the destination, the receiver
converts the analog back to MIDI so you can receive a performance as
played.  There will be a slight lag , but you will never be able to
tell it.  Have you ever called a talk show on radio and tried to listen
at the same time?  You have a 1-second lag there too.

I would like to try a phone call sometime.  What do you think?

You know, QRS should build a broadcast station.  Then we could 'tune
in' with our pianos!  (It would be a good place to advertise, too!  :-)

Best Regards
Andy & Chris Taylor
Tempola Music Rolls
http://home.swbell.net/tempola/index.htm

 [ The QRS Pianomation system converts the MIDI wireline bytes into
 [ a synchronous code, originally intended for Philips cassettes.  The
 [ scheme is quite robust, with adequate redundancy so that signal
 [ drop-outs (due to bad oxide coating) don't cause sync loss.
 [
 [ However, it may need a little more bandwidth than a voice-grade
 [ telephone circuit provides; try sending a signal from a telephone
 [ extension within your house, and then try sending from a neighbor's
 [ telephone.  If that works telephone Jody and play his Pianomation !
 [ -- Robbie