• sink_name: name for the sink
• sink_properties: properties for the sink
• sink_input_properties: properties for the sink input
• master: name of sink to filter
• sink_master: name of sink to filter
• format: sample format
• rate: sample rate
• channels: number of channels
• channel_map: input channel map
• plugin: ladspa plugin name
• label: ladspa plugin label
• control: comma separated list of input control values
• input_ladspaport_map: comma separated list of input LADSPA port names
• output_ladspaport_map: comma separated list of output LADSPA port names