Octopus Manual - LinPlug Virtual Instruments

Note that the overall tuning of the instrument is affected by several otherparameters including the TRANSP (Transpose) setting and the setting ofthe Step Sequencer/s. See the appropriate section of this manual for moreinformation.FrequencyThe Frequency control is used to set a frequency offset within the Oscillator.For example, if the Oscillytor is triggered by Middle C then it will oscillate at261 Hz. If the Frequency control is then set to 5.0 the frequency producedwill be 266 Hz. Also note that if the Ratio control is set to 0.0 and theFrequency control is set to 5.0 then the waveform will oscillate at 5Hz. Inmathematical terms this can be expressed as:Oscillator Frequency = Generator Frequency x Pitch/Ratio + FrequencyPhaseThe Phase control is used for setting the starting point in the waveform’scycle when a note is triggered. For example, if the Phase control is set to0.50 then the waveform will start oscillating half-way through a cycle.FreeWhen the Free button is switched off, the waveform always begins playingfrom a point in the waveform determined by the setting of the Phase control.For example, if the Oscillator is producing a sine wave and the Phasecontrol is currently set to 0.00, then the waveform will always begin from thestart of a cycle. When the Free button is switched on, the Oscillator runscontinuously, so that the phase of the waveform when the Oscillator istriggered will be at a random point in the cycle, not necessarily at the start ofthe cycle. This point will be different every time the waveform is triggered.18 Manual