Audio::LADSPA::Network 0.018

Audio::LADSPA::Network is a semi automatic connection of Audio::LADSPA::* objects.

SYNOPSIS

use Audio::LADSPA::Network;
use Audio::LADSPA::Plugin::Play;
sub subscriber {
my ($object,$event) = @_;
$object = ref($object);
print "Recieved event $event from $objectn";
}
Audio::LADSPA::Network->add_subscriber(*,⊂scriber);

my $net = Audio::LADSPA::Network->new();
my $sine = $net->add_plugin( label => sine_fcac );
my $delay = $net->add_plugin( label => delay_5s );
my $play = $net->add_plugin(Audio::LADSPA::Plugin::Play);

$net->connect($sine,Output,$delay,Input);
$net->connect($delay,Output,$play,Input);

$sine->set(Frequency (Hz) => 440); # set freq
$sine->set(Amplitude => 1); # set amp

$delay->set(Delay (Seconds) => 1); # 1 sec delay
$delay->set(Dry/Wet Balance => 0.2); # balance - 0.2

for ( 0 .. 100 ) {
$net->run(100);
}
$sine->set(Amplitude => 0); #just delay from now
for ( 0 .. 500 ) {
$net->run(100);
}

This module makes it easier to create connecting Audio::LADSPA::Plugin objects. It automatically keeps the sampling frequencies correct for all plugins, adds control and audio buffers to unconnected plugins and prevents illegal connections.

It also implements an observable-type API via Class::Publisher that can be used to recieve notifications of events in the network. Amongst other things, this makes writing loosely coupled GUIs fairly straightforward.