tone (Csound opcode)
A first-order recursive low pass filter with variable frequency response.
ar tone asig, khp [, iskip]
sr = 44100 kr = 4410 nchnls = 2 instr 1 ilen = p3 iamp = p4 kenv linseg 0, 0.02, 1, ilen-0.02-0.05, 1, 0.05, 0 ifrq = cpspch(p5) ifrq_t = cpspch(8.00) a_osc oscil iamp*kenv, ifrq, 1 a_sig tone a_osc, ifrq_t out a_sig, a_osc endin
f1 0 2048 10 1 i1 0.00 0.25 30000 5.00 i1 + 0.25 30000 5.02 i1 + 0.25 30000 5.04 i1 + 0.25 30000 5.05 i1 + 0.25 30000 5.07 i1 + 0.25 30000 5.09 i1 + 0.25 30000 5.11 i1 + 0.25 30000 6.00 i1 + 0.25 30000 6.02 i1 + 0.25 30000 6.04 i1 + 0.25 30000 6.05 i1 + 0.25 30000 6.07 i1 + 0.25 30000 6.09 i1 + 0.25 30000 6.11 i1 + 0.25 30000 7.00 i1 + 0.25 30000 7.02 i1 + 0.25 30000 7.04 i1 + 0.25 30000 7.05 i1 + 0.25 30000 7.07 i1 + 0.25 30000 7.09 i1 + 0.25 30000 7.11 i1 + 0.25 30000 8.00 i1 + 0.25 30000 8.02 i1 + 0.25 30000 8.04 i1 + 0.25 30000 8.05 i1 + 0.25 30000 8.07 i1 + 0.25 30000 8.09 i1 + 0.25 30000 8.11
This produces the following output. The channel that has the signal go through tone is attenuated with higher frequencies while the other
channel is not:
Instruments
This opcode is used for the following instruments:
Other Csound opcodes.