![]() The first parameter set the time this state lasts. You still get the usual Attk, Decay, Sustain release. The envelope of each operator has 8 parameters, copied from the DX7 enveloppe. If FType is set to « fix », the frequency of the oscillator won’t depend on the key you press, you can then change this frequency with button 3 and 4.įine tune… Small adjusment to the main frequency. IF Ftype i set to « Keyb », the this param is the ratio between the real note asked by the key you pressed and the frequency the oscillator will produce. In this case the LCD will show you the frequency that the oscillator will produce in Hz. The 2 following params allow to change this frequency. ![]() Keyb : the frequency of the oscillator depends on the key you pressed and on the 2 following params : Freq and FTun.įixe : the frequencry of the oscillator is always the same. The waveforms can be found in « Operator>Shap » after « Off ». If you modify your waveform you have to remove the bin so that it’s recreated. ![]() The preenfm2 will create a usr*.bin from your txt to read the waveform faster and so boot faster. See message here for user waveform examples and here to turn wav files into preenfm2 format. Samples can be separated by what you want : tab, space, comma, return…. Samples must be float values between -1 and 1 with a « . » as decimal separator. They must be called usr1.txt, usr2.txt… usr6.txt Put you own waveform in /pfm2/waveform/ of the preenfm2 usb drive. You have 6 aditional waveforms that are read from the preenfm2 usb drive. User waveform : In firmware 2.01 have been added the user waveforms feature. You can chose for each operator independently between sin, saw, square, noise and 3 sinus variations. PreenFM proposes you several waveofms, and even a noise (rand) waveform very usefull to create percussive attack or to add noise/breath to your sound. This defines the waveform that the oscillator is using. You can trying to edit only with your ear but it’s always good to have in mind the algo picture so that you can understand how the knob you turn will modify the sound. The operator number you’re currently editing always show up on the lcd. A different behavior can be selected in the settings.ĭepending on the algo you’ve selected, you can have between 3 and 6 operators. User Op button to select your Operator number and the button just bellow to select « Oscillator », « Env A » or « Env B ». The Filter cutoff frequency and the crusher sampling rate can be modified by the modulation matrix. The available filters are (in firmware 1.04) : Low pass 2nd order, High pass, Bass boost, Band Pass and crusher. And the encoder 2 will (de)activate all triggers of the current beat. The encoder 3 will do 4 triggers at the same time separated by 1 beat. The encoder 4 will (de)activate the trigger just bellow the cursor. Use the left encoder to move the cursor and the 3 other encoders to activate or desactivate the triggers. If you select one of latter, an aditionnal page will show up when you press the ENG button. After pattern 22 you’ll find 4 user patterns : Usr1, Usr2, Usr3, Usr4. It’s interesting to play with the Pan parameter in the modulation matrix. Each of the carrier operator has its Mix and Pan parameter. If you continue pressing the ENG button you’ll reach the mixing parameters. V is the amount of modulation that is injected by the velocity of the note you pressed. And the first one you’ll want to target from the modulation matrix. This is the heart of the FM engine and the more important parameters of the PreenFM. This is the direct value of modulation index as describe in all the FM documentation. When higher than 0, the env is not retrigged when a new note is played before the older one is released.ĭepending on the algo selected in the main engine screen, IM1, IM2, IM3, IM4 or IM5 shows up. When the number of voices is set to 1, the glide param shows up. The 48 operators are shared by the 4 instruments. Knowing that 48 operators can be played real time that means that maximum value of voices is : What the engine can handle depends on the number of operators of the algo of the 4 instruments. Number of notes that can be played at the same time by this instrument. The velocity source in the matrix modulation is independant from this setting. Volume always full.ġ6 Full impact of the velocity on the volume of the voices. You can press « Eng » + « Menu » to see it at any moment without changing the algo.ġ The keyboard velocity has no impact on the volume of the voices. ![]() See the algo page for an exhaustive list.Ĭhanging the algorithm make it shows up on the LCD. Here is the first one, which is good to understand how things work. This define the way the operators are plugged with each other.Ģ7 totally different FM algorithms are implemented. Workflow of the PreenFM2 sound generation Stop all sound, useful if you have hanging notes. Tests note, play sound of the current instrument.
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