posted 08 March 2001 09:23            

Hello Michael,
You can use !Pitchbend to control any parameter. To remap it to a range of 0 to 1, you could use

!Pitchbend + 1 * 0.5

Other techniques:
*Hold down the shift key while moving the VCS fader. That puts it into fine-tuning mode.
*Unlock the VCS and edit the controller minimum and maximum values to narrow the range of your fader. Your MIDI fader box will still be putting out 7-bit values but if the range is narrower, you can get a finer resolution in that narrow range.
* Use TWO faders, one for coarse adjustments, and the other for fine adjustments. For example:

posted 09 March 2001 09:15            

To reverse the sample, you need a negative *frequency*. So you have to convert notenumber to frequency first before negating, for example

!KeyPitch hz negated

or

!KeyPitch hz * !Direction

Loop and LoopFade must be checked for the backwards looping to work.

<this leads to the need of a debugging routine. anything where you could
actually see which numbers you are computing and what comes out on the
other end.>

posted 10 March 2001 11:53            

Unfortunately, the MIDI spec only gives you these choices directly -- to get higher precision you need to work around MIDI's shortcomings.

If you need 128 or fewer positions within a certain range of the sample, you can use the VCS editor to set the range of the controller to match the range of interest in the sample.

However, if you have a 1 second long recording and you want to be able to have your sequencer control the sample playback to start on *any* sample within the recording, you will need a controller with at least 44100 unique values (roughly 16 bits). This would require the use of 3 7-bit controllers.

The method suggested above:

!Start + (!Finetune * {1.0/128.0})

Means that you use Start to choose which (1/128) portion of the sample (coarse quantization), and Finetune further refines that choice by permitting you to choose which (1/128) portion of that coarse selection you want to use.

You can extend this technique to handle the case of the 1 second long recording:

!Start + (!Finetune * {1.0/128.0}) + (!Microtune * {1.0/128 squared})

This should be good enough to uniquely select any sample within a 2 gigasample long recording!

(As an aside, if you do not really need to choose each sample within a recording uniquely, but want the accuracy in order to make smooth changes, consider using, for example,

!Start smooth: 1 s

to cause the change to take place smoothly over the duration of 1 second.)