Logarithm of a signal Use the log~ object to output a signal composed of the logarithms of its input values. You can specify the logarithmic base. Cycling '74 MSP MSP Operators (signal) Input TEXT_HERE Base TEXT_HERE (signal) log of Input to Base TEXT_HERE Logarithmic base Sets the base of the logarithm. The default value is 0. TEXT_HERE TEXT_HERE Signal input to be evaluated In left inlet: log~ sends out a signal that is the logarithm of the input signal, to the base specified by the typed-in argument or the value most recently received in the right inlet. If a value in the signal is less than or equal to 0, log~ sends out a value of 0.00000001. The logarithm of the input signal to the base specified by the initial argument or the value most recently received in the right inlet.