osc 4 output_0 false Internal output 0 0 triangle_fcsc_oa_0 true LADSPA triangle_fcsc_oa triangle_1649.so 1466 1178 triangle_fcsc_oa_0 Output output_0 out default triangle_fcsc_oa_0 Frequency 440.000000 triangle_fcsc_oa_0 Slope 0.500000