I’m wondering if there’s anything equivalent to Wwise’s Synth One in FMOD (https://www.audiokinetic.com/library/edge/?source=Help&id=source_plug_in_editor_wwise_synth_one_plug_in)
FMOD Studio does not have a built in synth, but you are able to build your own by using a custom plugin instrument. Take a look at the plugin API example bundled with the FMOD Studio API installation.
There is also a basic tone generator (
FMOD_DSP_TYPE_OSCILLATOR) in FMOD Core that you might want to look into.