foo 1 output_0 false Internal output 0 0 sawtooth_fc_oa_0 false LADSPA sawtooth_fc_oa sawtooth_1641.so 1481 1221 square_fc_oa_0 false LADSPA square_fc_oa square_1643.so 1486 1159 default sawtooth_fc_oa_0 Frequency 440.000000 square_fc_oa_0 Frequency 440.000000