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Why Hauptwerk rather than a generic software or hardware sampler?
Hauptwerk has complex dedicated acoustic models, specifically designed for modelling organ features and applied separately to each virtual pipe, such as:
- Tremulants.
- Swell boxes.
- Air flow turbulence.
- Tuning drift.
- Wind supply fluctuations. (*)
Hauptwerk is designed to provide the very high polyphony necessary for modelling a pipe organ. Typically Hauptwerk can play at least 2000 pipes simultaneously on standard modern computer hardware, or upwards of 4000 pipes if some of the ultra-realism features are disabled. It is able to do so only by keeping all samples in memory and by having a very high-performance audio engine that is designed specifically with just the features necessary for modelling an organ. Most generic samplers use disk-streaming, which requires more expensive hardware than Hauptwerk's all-memory sampling to achieve the necessary polyphony. Even without disk-streaming, most generic samplers are limited to a much smaller polyphony.
Hauptwerk's core sampling engine is specifically designed for playing pipe samples, with features such as:
- Support for multiple sample loops to minimise repetition.
- Seamless phase-aligned join to release samples.
- Modulation of release samples for realistic sound decay from short notes.
- Comprehensive real-time per-pipe voicing facilities, allowing the sound of each pipe to be fine-tuned. (*)
Hauptwerk has a graphical and functional interface designed to model the controls and functionality of a pipe organ accurately, such as:
- Stops and couplers.
- Fully-programmable combination systems.
- Crescendo pedals, reversible pistons, effects pedals, theatre organ traps, second touch, etc.
Hauptwerk has the necessary functionality to power digital organs, such as:
- Full control of all virtual organ functions by MIDI.
- Multi-channel audio output, with ranks assigned amongst groups of audio outputs. (*)
- MIDI control of solenoid-actuated or illuminated draw-knobs/tabs. (*)
- MIDI LCD panel output to show stop, coupler and piston names on a hardware console. (*)
- Adjustable per-pipe voicing. (*)
The are several excellent generic software samplers, which may well be better choices for modelling other types of instruments. However, for organs and similar instruments, we believe that none is a serious alternative to Hauptwerk.
(*) MIDI output, multi-channel audio output, voicing facilities and the wind supply model are only available in the Advanced Edition of Hauptwerk.
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