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pcm.filter {
    type ladspa;
    slave {
        pcm test;
    }
    channels 6
    path "/usr/lib/ladspa";
    plugins {
        # dunno what this does
        0 {
            id 1098
            label identity_audio
            policy none
            input {
                bindings {
                    0 0
                }
            }
        }
        # this is our delaying
        1 {
            id 1055
            label delay_1s
            policy duplicate
            input {
                bindings {
                    2 2  # rear left
                    3 3  # rear right
                }
                controls {
                    0.8 0.3
                }
            }
        }
        # this is our lowpass filter
        2 {
            id 1051
            label lpf
            policy duplicate
            input {
                bindings {
                    5 5  # subwoofer
                }
                controls {
                    300 2
                }
            }
        }
    }
}