with individual envelopes, key scaling, and modulation sections
derived from classic four operator FM synths
modelled on 1980s hardware units
derived from the Yamaha TX81Z
2x, 3x, and 4x — works in polyphonic mode
with eight different temperaments
tempo-syncable with up, down, up-down, and random patterns
affects the pitch of each operator individually
FM4 instantly self-terminates when exposed to a farty brass preset
FM4 for iPad has reached #1 on the Appstore list of most popular music apps. It comes with a build in arpeggiator and is controllable via Core MIDI and MIDI over Bluetooth for integration in a studio environment or for live use with an external keyboard/controller. It supports Inter-App Audio and is compatible with Audiobus for easy integration with other apps.
FM4 for Reason is a newcomer in the Propellerhead Rack Store. It comes with numerous CV inputs/outputs for external control, including individual inputs for modulating both the level and the pitch of each of the four operators. A unique feature of FM4 for Reason is its drift knob for spicing up sounds with a more organic feel. FM4 is fully automatable and supports Remote.
Modelled on the first commercially available FM synths from the 1980s, FM4 provides the same gritty sound, but with a modern interface, and without being bound by the limitations of the original units. For example we have redesigned the pitch envelope with a tweakable curve ideal for percussive sounds. Thus FM4 is capable of producing a multitude of sounds, ranging from punchy basses, crystal-clear bells, and lush pads, to organic textures, striking drums, and piercing leads.
At the heart of FM4 is our digital FM modelling engine which has been carefully modelled on original hardware units from the popular DX series. Every aspect of the hardware — from envelope curves to sine-table sizes and quantisation errors to digital-to-analogue converters — has been meticulously analysed. With a combination of complex math and substantial hours of tweaking, we have committed ourselves to recreate that filthy, quirky sound of the original units.
Over time FM synthesis has garnered a reputation of being arcane and difficult to master. We think that this is not deserved. To warrant our claim we have given FM4 a carefully thought-out, stripped-down, yet powerfull, user interface. With every parameter being available on a single page, alike traditional analogue synthesisers, FM4 facilitates a workflow with minimal overhead, encourages exploration, and allows for faster programming yielding instant sonic results.