Nota Volt

Nota Volt is a virtual-analog synthesizer — the classic two-oscillator subtractive voice (in the vein of Ableton Analog). Two oscillators plus a noise source feed two multimode filters and two amplifiers, shaped by dedicated filter and amp envelopes, two LFOs, a vibrato, a modulation matrix and eight macros. It’s the go-to for basses, leads, pads and plucks.

Overview

Per voice, the signal flows:

Osc 1 ┐                      ┌─ Filter 1 ─ Amp 1 ─┐
Osc 2 ┼─ route per source ──┤                     ├─▶ out
Noise ┘                      └─ Filter 2 ─ Amp 2 ─┘   (Filter 1 can also feed Filter 2)

Each source (Osc 1, Osc 2, Noise) is routed to Filter 1 or Filter 2. Cutoff is moved by the filter envelope, keytracking and an LFO; the amp envelope shapes level. On top of the fixed routing sits a full modulation matrix and eight macros.

Interface

The card (mockup 2e) is an always-visible live strip, a tab rail that swaps the body, and an output rail.

• Live strip — CUTOFF, RES and GLIDE sliders plus the Poly / Mono voice mode, reachable from any tab.
• Tab rail (left) — Osc · Filter · Env · LFO · Mod · Macro.
• Output rail (right) — GAIN and PAN; the header carries a live voice meter.

The tabs:

• Osc — three lanes: Osc 1 and Osc 2 (waveform, octave, semitone, fine, level, filter route, start phase) and Noise (level, colour, route) with a mix-sum meter.
• Filter — an interactive response graph with a Filter 1 / 2 selector; each filter has a type (LP · HP · BP · Notch), a 12 / 24 dB slope, cutoff, resonance, and envelope / key-tracking amounts.
• Env — the Amp (→ level) and Filter (→ cutoff) envelopes as interactive A/D/S/R graphs.
• LFO — LFO 1 and LFO 2 (shape, rate, depth, sync, fade) and a dedicated Vibrato.
• Mod — a 7×6 drag matrix of sources against destinations (drag a cell up for a positive amount, down for negative).
• Macro — eight macros, each a value with a destination and amount.

Parameters

Live strip:

Parameter	Range	What it does
Cutoff	20 Hz…18 kHz	Filter 1 cutoff frequency.
Res	0–1	Filter 1 resonance.
Glide	off…~2.4 s	Portamento time between notes.
Poly / Mono	—	Polyphonic or monophonic voicing.

Per oscillator (Osc 1, Osc 2):

Parameter	Range	What it does
Wave	Saw · Square · Tri · Sine	Oscillator waveform.
Oct / Semi / Fine	—	Tuning by octave, semitone and cents.
Level	0–1	Oscillator level into its filter.
Route	Filter 1 / 2	Which filter the oscillator feeds.
Phase	0–1	Start phase (0 = free-running).

Noise: Level, Color (dark · pink · white), Route.

Per filter (Filter 1, Filter 2):

Parameter	Range	What it does
Type	LP · HP · BP · Notch	Filter shape.
Slope	12 / 24 dB	Filter steepness.
Cutoff / Reso	—	Cutoff frequency and resonance.
Env / Key	bipolar	Filter-envelope and keytracking amounts on cutoff.

Envelopes, LFOs and modulation:

Parameter	Range	What it does
Amp env A/D/S/R	—	Shapes each note’s level.
Filter env A/D/S/R	—	Moves the filter cutoff over time.
LFO 1 / LFO 2	shape · rate · depth · sync · fade	Two modulators (sin · tri · sqr · S&H), optionally tempo-synced with per-note fade-in.
Vibrato	rate · depth	Dedicated pitch vibrato.
Mod matrix	7 × 6, bipolar	Sources (Amp Env · Flt Env · LFO 1 · LFO 2 · Velocity · Key · Mod Wheel) to destinations (Pitch · Osc 2 · Cutoff · Reso · Level · Pan).
Macros 1–8	value · dest · amount	Manual offsets into the same destinations.
Gain / Pan	—	Output level and pan.

Tips & recipes

• Fat detuned bass: two saws, set Osc 2’s Fine slightly off Osc 1, add a little Glide and Mono for slides.
• Evolving pad: raise the filter envelope’s decay/sustain, assign LFO 1 → Cutoff in the matrix, and add Vibrato for movement.
• Snappy pluck: short amp Decay, low Sustain, and a filter envelope with fast decay so brightness drops quickly.
• Playable macros: map a macro to Cutoff (or several destinations at once) for a single performance knob.

See also

• Nota Operator — FM synthesis for metallic and bell tones.