Main VST Host Specs
The mensurable Key Performance Indicators (KPI) for hardware (or software) VST hosts benchmark for live application (stage use) are: low warm-up time; low time required to switch between instruments and banks/ patches/ presets; low audio latency (less than 5 ms); good sound quality (sample rate); low CPU usage; low background noise; high input level dynamic range; greater user memory capacity.
The subjective aspects to be considered are: run under Windows, Linux, Mac, Android or other operating systems; run ASIO drive; run a great number of both free and commercial VST plug-ins; compatible with any kind of synthesis algorithms as additive, subtractive, physical modelling, sampling, FM synthesis, mixed and so on; offer a friendly Man Machine Interface (MMI) including touch screen capabilities; back-light screen for overnight operation; stable program routines without crashes; instrument parameters easily user configurable; ability to simulate the sound of a real instrument, if offered; open-architecture design for hardware and software with SDK; and, automatic detection of peripheral as MIDI keyboards, controllers and third part components; Considering hardware solutions: rugged construction suitable for live performance, with high life cycles quality jacks, connectors, switches, rotary and slider potentiometer. Musicians shall provide a no-break (UPS) for the entire hardware system to avoid electric power faults and use good cable extensions and plugs.
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