Description

Expression Mapper is a modulation device that allows the user to specify the modulation behaviour using javascript expressions. It provides 8 control value parameters that can be renamed to make more human readable expressions. It features a built in metronome to force updates at a given interval. By referencing 'time' in your javascript expressions you can also create complex LFO type effects. The results can be mapped to up to 8 other parameters with range remapping.

This is my first Max for Live device and hasn't had a great deal of testing yet, but hopefully it's already of use to some. I'd be interested to hear any comments or suggestions for future versions.

Version History:

1.0:

- Initial Release

1.1:

- Fixed so the mapping only updates from metronome ticks when metronome enabled and transport is running.

- Added build in convenience functions:

saw( periodInBeats, phaseOffset ) - Generates a sawtooth wave locked to Live transport.

square( periodInBeats, phaseOffset ) - Generates a square wave locked to Live transport.

pulse( periodInBeats, phaseOffset, dutyCycle ) - Generates a pulse wave locked to Live transport.

sine( periodInBeats, phaseOffset ) - Generates a sine wave locked to Live transport.

triangle( periodInBeats, phaseOffset ) - Generates a triangle wave locked to Live transport.

fit( value, oldMin, oldMax, newMin, newMax ) - Transforms clamped value from old range to new range.

fit01( value, newMin, newMax ) - Transforms a value with range 0 - 1 to new range.

curve( value, slope ) - Remaps value in range 0 - 1 using exponential slope with range -1 to 1.

- Added graphical display.

1.1.1:

- Fixed UI bug hiding extended mapping display.

1.2:

- Rearranged internals. Please note that because of this settings will not migrate from 1.1.1 to this version.

- Reworked Metronome feature to stay in sync with Live transport.

- Added smoothing control. Please note that this relies on the target device/parameter supporting the live.remote~ smoothing feature, which isn't always the case. Eg. currently Operator doesn't seem to work, but Wavetable does.

- Fixed miscellaneous bugs.

1.2.1:

- Fixed bugs with multiple expression mappers in a set