![]() Envelopes![]() In the Envelope screen you can setup the main envelopes used by BLUE. Clicking on a button in the left-hand part of the screen allows you to select the various envelopes used. These are the volume envelopes for oscillators A to F, the filter envelopes for filter A & B, and the main volume envelope. This envelope section is very powerful. BLUE follows the standard "subtractive synthesis" signal route. This means from Osc > Filter > Amp. However because of the different Algorithms and the several oscillator output destinations you can combine several different types of synthesis in special ways. For example, each oscillator can have its own envelope which is used for frequency and ring modulation style sounds. But if you do not need to use the oscillator envelope and want the oscillator to behave as a standard subtractive oscillator, you simply set the envelope amount within that oscillator envelope to zero. Try the sound "NM Bass" in bank "01_Diverse 04".
This classic signal route makes it possible that you can do this: Using all oscillators for a classic FM sound and leave the ".carrier". oscillator envelopes not active (amount setting of 0). This means that the main Volume envelope can be used to control the total volume. This is done in the example preset mention above "NM Bass". For each of these envelopes, the same controls are used except for the Vol Envelope. In this the velocity reponse parameter is added, other velocity response parameters can be found in their own section such as each oscillator and the filter section. Pre-Delay TimeThe time taken before the envelope starts. Attack time / CurveThe time taken for the envelope to reach its full value, the curve controls the shape of this section. HoldHow long the envelope stays at this maximum value. Decay time / CurveHow quickly the envelope takes to decay to it's sustain level, and the decay shape. SustainSustain level of the envelope. FadeHow the sustain value changes over time, for negative values the sustain level reduces over time, for positive values the sustain value increases over time. Release and ShapeControls how much time the envelope reduces from the sustain level to zero after the key is released and the shape of this release stage. Key > SpeedControls how much the speed of the envelope is altered by the key pressed. For positive values, higher keys produce faster envelopes, for negative values, higher keys produce slower envelopes. Vel > SpeedControls how much the speed of the envelope is altered by the velocity of the key pressed. For positive values, higher velocity produce faster envelopes, for negative values, higher velocity produce slower envelopes.Envelope RetriggerSets envelope retriggers over time. This is default to off so the envelope doesn’t retrigger. At higher values the envelope retriggers quicker. Settings are synced to midi tempo values. Velocity > Vol (only Vol Envelope)For the main volume envelope this controls how much the velocity of the key alters the volume of the note. Envelope screenThe envelope screen allows you to graphically alter the current envelope. The first part of the screen alters the attack time and level, and pressing shift alters the attack curve shape. The second part alters the decay time and pressing shift alters the decay curve shape. The third part alters the sustain level and pressing shift alters the fade level. The final part alters the release time and pressing shift alters the release curve shape. The right mouse button (or control-click on Mac) brings up a menu which gives you the option to copy/paste/clear the envelope settings. |