Function: logn(sin(band pass(numbers("yxx"))) if band pass(numbers("yxx")) > numbers("per") if sin(band pass(numbers("yxx"))) > numbers("yxx") else band pass(numbers("yxx")) else numbers("yxx") if numbers("per") if sin(band pass(numbers("yxx"))) > band pass(numbers("yxx")) else numbers("yxx") > sin(band pass(numbers("yxx"))) else band pass(numbers("yxx")))