NAME
MIDI::RtController::Filter::Math - Math based RtController filters
VERSION
version 0.0403
SYNOPSIS
use curry;
use MIDI::RtController ();
use MIDI::RtController::Filter::Math ();
my $controller = MIDI::RtController->new(
input => 'keyboard',
output => 'usb',
);
my $filter = MIDI::RtController::Filter::Math->new(rtc => $controller);
$filter->control(1); # CC#01 = mod-wheel
$filter->channel(0);
$controller->add_filter('stair_step', note_on => $filter->curry::stair_step);
$controller->run;DESCRIPTION
MIDI::RtController::Filter::Math is the collection of Math based MIDI::RtController filters.
ATTRIBUTES
delay
$delay = $filter->delay;
$filter->delay($number);The current delay time.
Default: 0.1 seconds
feedback
$feedback = $filter->feedback;
$filter->feedback($number);The amount of feedback.
Default: 3
up
$up = $filter->up;
$filter->up($number);The upward movement steps.
Default: 2
down
$down = $filter->down;
$filter->down($number);The downward movement steps.
Default: -1
METHODS
To make and use filters, please see the documentation in MIDI::RtController::Filter.
stair_step
Notes are played from the event note, in up-down, stair-step fashion.
If trigger or value is set, the filter checks those against the MIDI event note or value, respectively, to see if the filter should be applied.
SEE ALSO
The eg/*.pl program(s) in this distribution
AUTHOR
Gene Boggs <[email protected]>
COPYRIGHT AND LICENSE
This software is copyright (c) 2025 by Gene Boggs.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.