Voltage Modular Designer — F_DEXZ — DX-Style Level Scaling Explained

In this video we take a detailed look at the DX-style Level Scaling system inside F_DEXZ. Unlike simple keyboard tracking, F_DEXZ level scaling changes how fast an operator level fades away before or after a selectable keyboard center point. This allows operators to gradually disappear across the keyboard range, closely following classic FM synthesis behavior used in many legendary DX-style sounds. Instead of changing pitch or filter behavior, level scaling directly controls operator output level over the keyboard range. Because FM synthesis depends heavily on modulation balance, this can dramatically reshape the sound depending on where you play. Topics covered in this video: • How the F_DEXZ level scaling system works • The keyboard center point • Left and right scaling behavior • Gradual operator fade across the keyboard • Slow vs fast level falloff • Scaling carriers vs modulators • Creating bass-only or high-range operators • Using scaling for layered FM textures • Building split-style sounds inside a single patch • Creating evolving harmonic movement over the keyboard One important detail: F_DEXZ scaling does not work as a traditional EQ or filter system. Instead, operators simply become softer or disappear faster depending on their position relative to the scaling center. This subtle behavior is one of the reasons classic FM patches feel alive and dynamic across the keyboard. Because modulators and carriers react differently in FM synthesis, even small scaling changes can completely alter timbre, brightness, attack behavior, and harmonic complexity. F_DEXZ is an advanced 6-operator FM synthesizer for Voltage Modular Designer featuring: • multiple FM algorithms • operator feedback • DX-style DAC character modes • assignable modulation matrix • operator waveforms • stereo spread and drift • unison modes • advanced envelopes • DX7 SysEx import If you want more expressive and realistic FM patches, understanding level scaling is absolutely essential. #VoltageModular #FMsynthesis #DX7 #Synthesizer #SoundDesign #VoltageModularDesigner #F_DEXZ #CherryAudio #ModularSynth #FMProgramming