Modulation

What sound is, how frequency and amplitude work, and why the harmonic series determines the timbre of every instrument — the physics behind EQ, synthesis, and mixing.

How EQ works: low-pass, high-pass, band-pass, shelf, and parametric filters explained — frequency, gain, Q, resonance, and the subtractive approach to shaping sound.

Where synthesized sound comes from — oscillator types, waveform shapes, and the harmonic recipe behind each one.

ADSR envelopes explained: attack, decay, sustain, release — how filter and amplitude envelopes shape synthesizer sounds from plucks to pads.

LFOs, vibrato, tremolo, detuning, unison, and glide — the tools that make static sounds come alive.

How songs are organized into sections — and why recognizing form is what separates seasoned songwriters from rookies.

Subtractive, FM, wavetable, and granular synthesis compared — how to build patches from scratch, and what 'analog warmth' actually means in technical terms.

Room acoustics for home studios: standing waves, bass traps, absorption panels, the mirror test for first reflections, speaker placement, and how to treat a room on a budget.

Reverb explained: predelay, RT60 decay time, diffusion, density — plus room, plate, hall, and spring reverb types compared, and why reverb goes on a send, not an insert.

Chorus, phaser, flanger, tremolo, and distortion explained — how each modulation effect works, the difference between saturation and clipping, and when to reach for each one.