- HarpTime features a sophisticated sympathetic resonance among a set of 12 individual physically-modeled strings.
- In the 'Pro' model, each string is simulated with its own timbre and pluck position parameters, for a more realistic acoustic emulation.
- The strings can be tuned individually, which allows the use of microtuned intonations and scales.
- The maximum polyphony is 12 simultaneous voices for the 'Pro' model and 8 voices for the 'Fun' model.
- Another unique feature of this synthesizer is its modeling of the effects of a harp's Bray Pins (which hold a string to the body of the harp) There are ten different different attack and decay behaviors modeled, by means of a "Shaping" control, some of which model the classic buzzing tone of mediaeval harps.
- A unique "SelfBend" feature is implemented to emulate the pitch envelope typical of loose strings.
- Adjustable smoothed Pitch Modulation, controlled by an LFO.
- The playing style (from soft to hard plucking) can be affected by a "Pick" control which allows variation in the touch of the player.
- Velocity Sensitivity is adjustable.
- A "Damp" switch allows the sustain of HarpTime's strings to be set on HarpTime's control panel; this control behaves similarly to the Release stage of an amplitude envelope on a more typical synthesizer.
- The master tuning frequency of the synthesizer can also be adjusted.
- The ModWheel can be used to 'strum' octaves, in a Glissandi effect. Only the white notes are played.
- A double "Low Pass/Band Pass" filter, which allows a great deal of control over the timbre of the sound. This means, for example, that electric harp timbres are possible.
- The internal stereo Chorus adds more depth and timbral variation to the sound.
The following controls are implemented as a single set in the Fun version, or one separate set per string in the Pro version of HarpTime:
- Exciter: (per string) Controls the maximum energy sent to the string.
- Tuning: (per string) Retunes the string range -100 to +100 cents of semitone.
- PikPosi: (per string) Controls the effective pluck position on the string, changing the harmonics of the sound.
- PikBrig: (per string) NoiseFilter Frequency Control affects brightness of picking.
The following controls affect all strings :
- Modulation, PickAtak, SelfBend, Sympathetic, Damp, Shaping, DynaTone, ToneBals, Velocity, Pitch, Chorus, Volume.