is an emulation of the Yamaha YM2151 (OPM) 4 operator FM
OPM chip was
popular in the 1980s and early 1990s. Videogame fans
will most likely be familiar with the
Sega Genesis (Megadrive),
whose sound chip is a slight variation on the OPM - the
OPN. The chip has also been used in countless arcade
games including Paperboy, Outrun, Metal Slugs 1-5, and
Street Fighter II.
Yamaha YM2151 (OPM) 4
operator FM sound chip emulation.
Supports MIDI CCs.
VOPM doesn't offer
any effects like reverb or delay - just use external
Choirs can give any kind of music a lift, but sampled
choirs are not versatile and many vocal synthesize
concentrate so hard on trying to sing a lyric that they
forget to carry a tune.
Ever wondered how Tomita created such convincing choir
Voc one is different, using a simple analogue
synthesizer to simulate the glottal pulse or pulses and
then using a powerful, morphable formant filter bank to
give a realistic, warm and flexible vocal quality:
full control over each stage of the vocal synthesis
morphable formant filter with 11 recognised phonetic
morphing between vowels sounds subtle and natural
control over the register of the formant filter and
the emphasis to give a much greater range of
possible vocal types
8 presets plus room for 8 more
built in high quality reverb (UDReverb based on
freeverb - thanks to Elogoxa and David Haupt for
lots of potential for experimentation.
It should be noted that CPU usage is quite high with
this one and a minimum 1.2GHz processor is recommended,
although it will work (if the playing is not too
complex) on an 800MHz processor.