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English Stable (1.2.x)
English Stable (1.2.x)
  • Welcome to LMMS
  • Getting Started
    • FAQ
    • Installation
    • Settings
    • Troubleshooting
    • Reporting a Bug
  • Navigating LMMS
    • Interface Overview
    • Main Menu Bar
    • Toolbar
    • Sidebar
    • Instrument Window
    • Song Editor
    • Beat+Bassline Editor
    • Piano Roll
    • Automation
    • FX Mixer
    • Project Notes
    • Controller Rack
  • PRODUCTION
    • Safety
    • Jumping Right In
    • Instruments: Samples & Presets
    • Creating a Track
    • Using MIDI
    • Using VSTs
    • Exporting a Song
    • Your First Song with LMMS
  • Instruments
    • AudioFileProcessor
    • BitInvader
    • FreeBoy
    • GIG Player
    • Kicker
    • LB302
    • Mallets
    • Monstro
    • NEScaline
    • OpulenZ
    • Organic
    • PatMan
    • SF2 Player
    • sfxr
    • SID
    • Triple Oscillator
    • Vibed
    • Watsyn
    • ZynAddSubFX
    • VeSTige
  • Effects
    • Effects Prologue
    • Amplifier
    • BassBooster
    • Bitcrush
    • Compressor
    • Crossover Equalizer
    • Delay
    • Dual Filter
    • Dynamics Processor
    • Equalizer
    • Flanger
    • Multitap Echo
    • Peak Controller
    • ReverbSC
    • Spectrum Analyzer
    • Stereo Matrix
    • StereoEnhancer
    • Waveshaper
    • LADSPA Plugins
  • Resources
    • Glossary
    • Key Mappings
    • Video Tutorials
    • Sample Resources
    • SoundFont Resources
    • VST Resources
    • Music Making Resources
    • Miscellany
  • Legal
    • License
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  • Operators
  • Controls
  • Global Controls
  • Useful Resources

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  1. Instruments

OpulenZ

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OpulenZ is an emulation of the Yamaha YM3812, a.k.a. OPL2, FM synth chip which was used i sound cards around 1990 - the Adlib and Sound Blasters. It generates sound through frequency modulation or adding 2 oscillators.

Operators

The two oscillators are called operators. In FM mode (bottom left), operator 1 modulates operator 2. Otherwise both operators are routed to the output.

Controls

For each operator, the controls are:

  • ATT, DEC, SUS, REL: an ADSR envelope

  • KSR: keyboard scaling rate. When KSR is on, envelopes get faster when the pitch rises.

  • PERC: percussive envelope. Makes the envelope go straight to release ignoring held keys.

  • TREM: applies tremolo (slight amplitude modulation) to the operator

  • VIB: applies vibrato (slight pitch modulation) to the operator

  • FEEDBACK: only for operator 1 - feeds a portion of the operator's output back into ir

  • LVL: the output level of the operator

  • SCALE: determines the scaling applied to the output level when the pitch rises

  • MUL: the frequency multiplier for the operator. 1 stands for the standard pitch played on the keyboard, 0 is one octave below.

  • WAVEFORM: selection from 4 waveforms: sine, half sine, absolute sine and quarter sine. NB: a DC removal plugin might be a good idea when routing waveforms other than sine to the output.

Global Controls

  • FM: when this is on, frequency modulation is used. Otherwise the operators are mixed together.

  • DEPTH, TREM and VIBR: these select deeper tremolo and vibrato. Applies to both operators.

Useful Resources

Getting started with FM:

Programming the AdLib/Sound Blaster FM Music Chips: (some of the controls are presented inverted in LMMS, to fit better with other symbols)

http://www.gorenfeld.net/lou/fmguide.html
http://www.shipbrook.net/jeff/sb.html
OpulenZ