Index

What is a Patch?

A “patch” is a unit of sound on the GT-100. In addition to settings determining the type of sound, a patch also contains effect settings. You can modify (edit) the settings of a patch, and save it as a “user patch.” (The factory supplied patches already built into the GT-100 are called “preset patches.”)

Each patch contains all of the settings for the PCM 1 and 2 synthesizers, for the COSM Modeling instruments, for the Normal Pickup settings, and for all of the effects for that memory location in the GT-100.

The GT-100 stores hundreds of such patches, where you can assign each a number and a name, like USER : 20-2 : RnB Section. The following illustration from the owner's manual shows what kind of information is stored in each patch.
A GT-100 patch contains four main components: the synthesizer sound with PCM1 and/or PCM2 synths and multi-effects, the modeling sound with amp and guitar effects, the normal pickup sound, and the effects shared by all of the sounds.
The following screenshot from the GT-100 FloorBoard Editor shows the patch structure similarly in the blue area, with modules for the sound sources and the effects. The modules use lighted buttons to indicate ON/OFF, potentiometer-like knobs, and pull-down menu fields for selecting sound sources and setting effects module parameters.

In the Patch Tree, the black area at the left in the screenshot below, you can see a list of the patches from my GT-100, sorted by bank numbers and then patches within the banks, corresponding to the Bank and Patch numbers in my GT-100. The GT-100 FloorBoard Editor provides several tools to help you view your patches is several useful ways. Look at the menu bar item Tools > Patch Text Summary, System Global Text Summary, and GT-100 Patch List Summary to explore these tools. One of the nice features of the GT-100 FloorBoard Editor is that you can click on any patch in the Patch Tree panel to instantly audition it in the GT-100.

There are four sound sources available in the GT-100 which can be used individually or in any combination. The sound sources are listed below and shown on the left side in the above and following images and are referred to in the Owner's Manual as 'tones':
GT-100 FloorBoard Main Window

Modules and Effects Routing

I'll explain elsewhere how each of the tone and effects modules works. Here it is important to note that you can enable a tone (sound source) or an effects module by clicking on the Enable/Disable switches (rectangular buttons), which will light when enabled (as DELAY above) and be gray when disabled (as MFX above). You can also reroute the AMP(lifier), NS(noise suppression), and MOD(ulation) effects to come before or after the MFX(multi-effects) by clicking the STRUCTURE 1/2 buttons, where STRUCTURE 1 routes them after and STRUCTURE 2 routes the before. You can also bypass the MFX module and the AMP-NS-MOD modules entirely.

Tone Restrictions and Selection using the GK Pickup Switch

The Roland owner's manual calls the sounds generated by the PCM synthesizers, the modeler, and the normal pickup(s) 'tones'. There are some restrictions on the functions that can be used with each tone and with the normal pickup; please refer to the following information from the owner's manual. For additional details, refer to the indicated owner's manual pages.
Patch restrictions and GK switch dependencies.