The default size is 128 samples (2.9ms 44.1kHz), which is a reasonable balance of CPU and latency. If you wish to change the block size, right-click on the panel of Host. Lower block sizes result in lower latency but force the plugin to process more often, which consumes more CPU. Because of this, VCV Host waits until the block is filled before requesting the VST plugin to process audio. While Rack modules process each sample one-by-one, VST plugins must process blocks of samples in bulk. There is no need to restart Rack if a new directory is added or a new plugin is installed. Searching is recursive, and plugins are searched immediately. In the plugin dropdown menu (opened by clicking the plugin name label), you can add or remove directories to allow VCV Host to search for plugins in different VST installation locations. If you send audio-rate modulation into Host’s parameter inputs, some VST plugins may behave strangely, crash, have bad CPU performance, or produce wonderful results. Note: Many VST plugins are not optimized for fast modulation of its parameters, while modular synthesizers (and thus VCV Rack) are designed to unify the concepts of audio and modulation signals. The instrument version of Host also includes mappable MIDI parameters for generating certain MIDI events, such as note velocity and pitch wheel, available by right-clicking the parameter label. Alternatively, right-click a parameter label to display a dropdown menu of all available VST parameters. wiggle) a knob or slider in the VST editor, and the parameter will be mapped. To map a VST parameter to a parameter input on Host, click a parameter label (initially displaying “-”), and the editor window will be shown. Up to 16 VST automation parameters system can be modulated with CV in Rack, with an input range of 0V to 10V. If closed, it can be reopened by clicking the “eye” icon next to the plugin name. When a plugin is loaded, its editor GUI window will be shown. The right input is normalized to the left input, so mono audio can be mapped to both stereo channels.Ĭlick the plugin name label (initially displaying “No plugin”) to open the list of installed VST plugins on your system. However, polyphony may be achieved by “strumming” a polyphonic VST instrument by quickly playing multiple notes with a long release time.įor hosting VST effects, processors, and pedals, use Host-FX, which includes stereo audio inputs. Only monophonic playing is supported at this time (depending on whether polyphonic cables will be implemented in Rack). This note is held until the gate falls to 0V. When the gate voltages rises, a MIDI note is triggered according to the current 1V/oct signal, rounded to the nearest note. Both modules include stereo audio outputs and 16 parameter inputs.įor hosting VST instruments, synthesizers, samplers, and sound generators, use Host, which includes 1V/oct pitch CV and gate inputs. The VCV Host plugin includes two modules for the two types of VST 2.x plugins.
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