# DeepPluck V0.7.0 Modulation — Implementation Report

Date: 2026-08-31

Milestone: V0.7.0 Modulation

Starting HEAD: `ecbf89d4c213795687296a31ae1eed63115b03b3`

Implementation commit: `61b2bba77a93f3709055af82317522994ce8c1ed`

Status: **automatable DoD complete; manual V0.7.0 verification pending**

## 1. Outcome

V0.7.0 adds one deterministic, sample-synchronous global LFO and three focused destinations: Filter Cutoff, the shared pitch of both oscillators, and Unison Stereo Spread. The implementation deliberately does not add an oscillator-mix target, a per-voice LFO, a modulation matrix, effects, randomisation, or Oscillator-1 waveform expansion.

The implementation preserves the established DeepPluck instrument identity, all plugin IDs, the no-input/stereo-output/MIDI contract, the first 32 parameter IDs and order, 16 preallocated musical voices, both oscillators, Transient/Noise, Filter, resonance compensation, Amp/Filter Envelopes, Unison, voice stealing, and the four factory-preset names/order.

The complete automatable Definition of Done passed in Debug and Release. Human listening, GUI, Cubase, host-sync, state/automation, scaling, and DAW CPU acceptance remain open and are not claimed.

## 2. Normative product direction

`Docs/Sound/DeepPluck_Sound_Manifest_v1.0.md` was read before implementation and remained normative. The chosen architecture supports restrained, purposeful, shared movement suitable for emotional Deep House plucks. It avoids turning DeepPluck into a general-purpose modulation synthesizer.

## 3. Confirmed implementation environment

- Windows 11 x64
- Visual Studio 2026 Developer Command Prompt 18.9.2
- MSVC 19.51.36256, toolset directory 14.51.36231
- Windows SDK 10.0.26100.0
- CMake 4.4.3
- JUCE 9.0.1
- C++20
- CMake generator: `Visual Studio 18 2026`, architecture `x64`

The final fresh configuration selected the confirmed SDK and compiler successfully. Other versions remain untested.

## 4. Start gate and baseline

The user had explicitly confirmed that V0.6.5 ran successfully. Before V0.7 source work, the unchanged start state was freshly configured and both Debug and Release builds passed all 18 existing suites.

Selected recorded V0.6.5 Release baselines:

| Scenario | V0.6.5 value |
|---|---:|
| Fresh Default, 44.1 kHz, 16 notes | peak 0.256507 |
| Tight Pluck, 44.1 kHz, 16 notes | peak 0.473075 |
| Soft Pluck, 44.1 kHz, 8 notes | peak 0.124791 |
| Long Pluck, 96 kHz, 8 notes | peak 0.137962 |
| Unison 1/2/3/4, 48 kHz, 16 notes | peaks 0.268460 / 0.254029 / 0.262126 / 0.265880 |
| CPU median, 16 notes, both oscillators, Unison 1/2/4 | 19.9390 / 23.8554 / 32.4853 ms |
| CPU Unison-4 / Unison-1 ratio | 1.62923 |

## 5. Protected untracked user files

All protected start-side untracked files were rechecked after implementation. Size and SHA-256 remained identical:

| Path | Bytes | SHA-256 |
|---|---:|---|
| `CubaseTest/DeepPluckTest.cpr` | 539857 | `513C642FFFC3A2A0EE148C7D8D72C94C10B4413AE74D1491FE8CFD4A9EAC293C` |
| `Docs/Codex-Bild 31. Aug. 2026, 11_53_35.png` | 1487439 | `067F6550C004B2C47857A9F75496F493E3A3C3DBC424F44DD69BA56D5DCEDDB2` |
| `Docs/DeepPluck_V0.2.0a_Master_Prompt_Rev1.txt` | 71058 | `D9FBC1AC0F427E85FEBA3001018FB7A180AB3AA9BEFB23E9345FDCE215C6A9AC` |
| `Docs/DeepPluck_V0.2.0b_MasterPrompt_Rev1.txt` | 69848 | `7485ED397B1B2541D8F3062F141388B4A31F4496465031535E2A989B9E398B4D` |
| `Docs/DeepPluck_V0.5.0_Second_Oscillator_MasterPrompt_Rev1.txt` | 67755 | `FE239DD85257ADDF1C77562414EA44126CE71EB23FCAA38C9A0D495458B8115A` |
| `Docs/DeepPluck_V0.6.0_Unison_Stereo_Width_MasterPrompt_Rev1.txt` | 74230 | `F955FBF5E8EC1FF1AA3029ACD36195E8C282E65F7AC0CBDF382D651EAC0B51B7` |
| `Docs/DeepPluck_V0.6.5_Functional_GUI_Reorganization_MasterPrompt_Rev1.txt` | 47921 | `8EBFE9705CDA3593B45A4795D02D9C7BF9D0778C92AFDA4C49546B172DC4AA00` |
| `Docs/DeepPluck_V0.7.0_Modulation_MasterPrompt_Rev1.txt` | 63160 | `250F5EB3F8092FFD6E601CEB014AAA998B133A13D029E5B68F67EF8D9BBA4051` |

None was modified, moved, deleted, staged, or committed.

## 6. Global LFO architecture and rationale

`DeepPluckLfo` is a focused DSP class with normalized phase, rate smoothing, waveform evaluation, restart mode, and output dezippering. It has no GUI, APVTS, voice, host-query, dynamic container, or external dependency.

`DeepPluckSynthesiser` owns exactly one instance. It generates one LFO value for each processed audio sample into a fixed 64-sample member buffer, then gives the same values to all voices for the corresponding absolute sample interval. The LFO advances during silence and is independent of voice count, Unison count, MIDI subdivision, host block partitioning, and visible GUI page.

This shared design keeps polyphonic movement coherent, avoids 16 unrelated modulation phases, and performs waveform evaluation only once per instrument sample.

## 7. Complete 40-parameter contract

The eight V0.7 IDs are appended at positions 33–40. Positions 1–32 are unchanged.

| # | ID | Type/range | Fresh default |
|---:|---|---|---:|
| 1 | `outputGain` | float -60..+6 dB | -3 dB |
| 2 | `masterTune` | float 420..460 Hz | 440 Hz |
| 3 | `ampAttack` | float 0.001..5 s | 0.003 s |
| 4 | `ampDecay` | float 0.001..5 s | 0.320 s |
| 5 | `ampSustain` | float 0..1 | 0 |
| 6 | `ampRelease` | float 0.001..10 s | 0.180 s |
| 7 | `filterEnabled` | bool | on |
| 8 | `filterCutoff` | float 20..20000 Hz | 1800 Hz |
| 9 | `filterResonance` | float 0..1 | 0.18 |
| 10 | `filterDrive` | float 0..18 dB | 3 dB |
| 11 | `filterKeyTracking` | float 0..1 | 0.35 |
| 12 | `filterEnvAmount` | float -5..+5 oct | +2.50 oct |
| 13 | `filterAttack` | float 0.001..5 s | 0.002 s |
| 14 | `filterDecay` | float 0.001..5 s | 0.280 s |
| 15 | `filterSustain` | float 0..1 | 0 |
| 16 | `filterRelease` | float 0.001..10 s | 0.180 s |
| 17 | `transientEnabled` | bool | on |
| 18 | `transientLevel` | float -60..0 dB | -18 dB |
| 19 | `transientDecay` | float 0.001..0.100 s | 0.012 s |
| 20 | `transientTone` | float 0..1 | 0.55 |
| 21 | `noiseEnabled` | bool | on |
| 22 | `noiseLevel` | float -60..0 dB | -27 dB |
| 23 | `noiseDecay` | float 0.005..1.500 s | 0.120 s |
| 24 | `noiseTone` | float 0..1 | 0.35 |
| 25 | `osc2Enabled` | bool | on |
| 26 | `osc2Level` | float -60..0 dB | -15 dB |
| 27 | `osc2Octave` | int -1..+1 | 0 |
| 28 | `osc2Semitone` | int -12..+12 | 0 |
| 29 | `osc2FineTune` | float -50..+50 ct | -7 ct |
| 30 | `unisonVoices` | int 1..4 | 2 |
| 31 | `unisonDetune` | float 0..30 ct, 0.1 | 4 ct |
| 32 | `stereoSpread` | float 0..1, 0.001 | 0.35 |
| 33 | `lfoRate` | float 0.020..12 Hz, 0.001, skew centre 0.5 | 0.25 Hz |
| 34 | `lfoSync` | bool | false |
| 35 | `lfoSyncDivision` | choice 4/1..1/16, indices 0..6 | 1/4, index 4 |
| 36 | `lfoWaveform` | choice Sine/Triangle/Saw/Square | Sine, index 0 |
| 37 | `lfoRestartMode` | choice Free Running/Retrigger First Note | index 1 |
| 38 | `lfoFilterAmount` | float -2..+2 oct, 0.01 | 0 |
| 39 | `lfoPitchAmount` | float -50..+50 ct, 0.1 | 0 |
| 40 | `lfoSpreadAmount` | float -1..+1, 0.001 | 0 |

The APVTS cache binds all 40 atomic pointers once outside the hot path and produces one validated, bounded, trivially-copyable snapshot per block.

## 8. Free rate and smoothing

Free Rate accepts 0.020..12 Hz. Changes use a 20 ms multiplicative `SmoothedValue`. Minimum, default, and maximum rates were tested at 44.1, 48, and 96 kHz; the phase and output remained finite and bounded.

## 9. Host sync, table, cache, and fallback

The processor queries host position once per block. Only finite tempos from 20 through 400 BPM replace the cache. Missing or invalid host tempo retains the most recent valid value; the initial fallback is 120 BPM.

```text
rateHz = tempoBpm / (60 * beatsPerCycle)
```

| Division | Beats/cycle | 20 BPM | 120 BPM | 400 BPM |
|---|---:|---:|---:|---:|
| 4/1 | 16 | 0.020833 | 0.125 | 0.416667 |
| 2/1 | 8 | 0.041667 | 0.250 | 0.833333 |
| 1/1 | 4 | 0.083333 | 0.500 | 1.666667 |
| 1/2 | 2 | 0.166667 | 1.000 | 3.333333 |
| 1/4 | 1 | 0.333333 | 2.000 | 6.666667 |
| 1/8 | 0.5 | 0.666667 | 4.000 | 13.333333 |
| 1/16 | 0.25 | 1.333333 | 8.000 | 26.666667 |

The exact musical sync calculation is retained through the valid tempo/division matrix. The user-facing Free Rate maximum remains 12 Hz; the fastest valid synced case is 26.6667 Hz.

## 10. Waveform formulas and output dezipper

For normalized phase `p` in `[0,1)`:

```text
Sine     = sin(2*pi*p)
Triangle = 1 - 4*abs(p - 0.5)
Saw      = 2*p - 1
Square   = p < 0.5 ? +1 : -1
```

Every raw and dezippered output is clamped to `[-1,+1]`. Waveform changes preserve phase. A fixed two-millisecond one-pole dezipper softens parameter transitions and hard waveform corners without adding oversampling or an audio-oscillator subsystem.

## 11. Restart First Note semantics

- Free Running never resets phase.
- Retrigger First Note resets to phase zero only if no voice is active at Note-On.
- Release tails count as active.
- Overlapping notes do not reset.
- Same-session voice stealing does not reset.
- Hard silence followed by the next Note-On resets exactly.
- LFO phase is runtime state and is not saved in APVTS.

## 12. Sample-accurate distribution and chunking

The synthesizer continues its existing sample-accurate MIDI segmentation. Within each segment it generates fixed chunks of at most 64 LFO samples. Every active voice receives the same pointer, absolute start, and length while rendering that interval. Automated comparisons verified identical LFO phase and audio across a 257-sample single host block and the same samples partitioned into 17-sample blocks.

## 13. Filter Cutoff mapping

The LFO offset is added to the established base/key/envelope calculation in octave space:

```text
effectiveCutoffHz = clamp(2^(baseOctaves + keyOffset + envOffset
                              + m * smoothedFilterAmount),
                          filterMinimum, filterMaximum)
```

Positive and negative Amounts, exact octave ratios, Filter bypass neutrality, high resonance, Drive 0/18 dB, cutoff bounds, and resonance compensation regression are covered. Both channel filters receive the same effective cutoff and keep independent audio history.

## 14. Pitch mapping

```text
pitchRatio = 2^(m * smoothedPitchAmountCents / 1200)
```

The same ratio multiplies both oscillator base frequencies before existing Unison detune. Oscillator-2 Octave/Semitone/Fine Tune and per-slot detune therefore remain intact. Limits are ±50 cents. Live changes do not reset oscillator phase.

## 15. Stereo Spread mapping

```text
symmetricRoom = min(baseSpread, 1 - baseSpread)
effectiveSpread = clamp(baseSpread + m * smoothedSpreadAmount * symmetricRoom, 0, 1)
```

Negative Amount reverses motion; bases 0 and 1 remain stable. Effective width targets are updated at a fixed interval no greater than 16 samples, then pass through the existing 20 ms pan-gain smoothers. This remains symmetric stereo width, not global panning.

## 16. Smoothing and live behavior

All three Amounts use independent 20 ms linear smoothers. A newly started note begins at the current bounded Amount. Live changes continue from the current value, reach the exact target, and never reinitialize a voice, oscillator, filter, envelope, or Unison slot. A transition back to zero completes its ramp and then reaches exact zero. Static zero takes explicit neutral branches.

Rate, mode, division, waveform, restart mode, and Amounts can change while notes are active. Base APVTS parameters are never overwritten with effective values.

## 17. State, legacy, and automation compatibility

- State save and restore include all 40 APVTS values.
- Full V0.7 roundtrip restored all eight new values at non-default settings.
- States through V0.6.5 receive Rate 0.25 Hz, Free, 1/4, Sine, Retrigger First Note, and three exact zero Amounts.
- Partial V0.7 states retain every present new value and receive declared defaults for every missing ID.
- Existing V0.1–V0.6 migration behavior remains active.
- Invalid/non-finite snapshot values fall back or clamp safely.
- LFO phase is intentionally not persisted.
- Host automation sees stable base values only; modulation never writes back.

## 18. Factory presets and Custom behavior

Names, order, and all previous 32 values are unchanged.

| Preset | Rate | Mode | Division | Waveform | Restart | Filter | Pitch | Spread |
|---|---:|---|---|---|---|---:|---:|---:|
| Deep Pluck | 0.25 Hz | Free | 1/4 | Sine | Retrigger First Note | 0 | 0 | 0 |
| Soft Pluck | 0.12 Hz | Free | 1/4 | Sine | Free Running | +0.12 oct | 0 | 0 |
| Tight Pluck | 0.25 Hz | Free | 1/4 | Sine | Retrigger First Note | 0 | 0 | 0 |
| Long Pluck | 0.08 Hz | Free | 1/4 | Sine | Free Running | 0 | 0 | +0.20 |

Deep Pluck still equals the full fresh state. No preset uses Pitch modulation. Matching, Previous/Next wrapping, Custom behavior, and editor-open neutrality passed.

## 19. MODULATION GUI and attachment matrix

The fixed editor remains 1180 × 700 and starts on SOUND. MODULATION is now active and contains two modules:

- LFO: Free/Sync, Free Rate, Sync Division, Waveform, Restart.
- AMOUNTS: Filter, Pitch, Spread.

Free mode enables Rate and visually disables Division; Sync mode reverses that state. The inactive stored value is not changed. Every control has its exact parameter ID as Component ID.

Attachment ownership is Header 2 + SOUND 8 + FILTER 10 + SHAPE 12 + MODULATION 8 = exactly 40. All pages remain constructed once, no FX page exists, 50 repeated page cycles preserved state, and page changes remained sample-neutral in the automated audio comparison.

## 20. Realtime safety review

The audio path adds no allocation, lock, file/network/registry access, logging, GUI call, APVTS string lookup, entropy, or system-time access. The global LFO, fixed transfer buffer, voice Amount smoothers, and counters are preallocated members. Host position is queried once per block, never per voice/sample. Waveform evaluation occurs once globally per sample. Amount-zero branches avoid unnecessary target mapping work. No dependency or external asset was added.

## 21. Automated suites

The 20 CTest suites are:

1. `parameters`
2. `oscillator`
3. `envelope`
4. `filter`
5. `filter_envelope`
6. `transient_noise`
7. `transient_noise_integration`
8. `oscillator2`
9. `oscillator2_integration`
10. `unison`
11. `unison_integration`
12. `headroom`
13. `performance`
14. `synthesiser`
15. `sample_accuracy`
16. `matrix`
17. `gui`
18. `smoothing_stability`
19. `modulation`
20. `modulation_integration`

The two new suites cover exact waveform formulas, phase/rate bounds, all divisions at 20/120/400 BPM, Free rate extremes, rate smoothing, determinism, phase-preserving edits, shared global samples, restart/release/steal semantics, exact destination formulas, Amount smoothing and zero neutrality, Filter bypass, host-block partitioning, 16 voices, all waveforms, active extremes, headroom, and finite output.

## 22. Audio, Amount-zero, and baseline regression

Amount-zero audio was compared sample-for-sample across radically different LFO rates, Sync states, divisions, waveforms, and restart modes; it was identical. Filter Amount was also sample-identical after the existing Filter bypass settled.

Selected final Release results:

| Scenario | V0.6.5 baseline | V0.7.0 final | Result |
|---|---:|---:|---|
| Fresh Default, 44.1 kHz, 16 notes | 0.256507 | 0.256507 | exact |
| Tight Pluck, 44.1 kHz, 16 notes | 0.473075 | 0.473075 | exact |
| Soft Pluck, 44.1 kHz, 8 notes | 0.124791 | 0.124792 | expected active subtle Filter modulation |
| Long Pluck, 96 kHz, 8 notes | 0.137962 | 0.137961 | expected active subtle Spread modulation |
| Unison 1/2/3/4 peaks | 0.268460 / 0.254029 / 0.262126 / 0.265880 | identical | exact neutral contract |

## 23. Headroom, extremes, determinism, and performance

Every existing headroom scenario remained at or below 0.95. The highest selected unchanged factory case remained Tight Pluck at 0.473075. Maximum V0.7 stress used 16 notes, Unison 4, both oscillators with Oscillator 2 at 0 dB, maximum detune, high resonance, 18 dB Drive, maximum Filter/Pitch/Spread Amounts, 12 Hz, and every waveform:

| Waveform | Peak |
|---|---:|
| Sine | 0.255173 |
| Triangle | 0.262837 |
| Saw | 0.244306 |
| Square | 0.250118 |

All samples remained finite. No limiter, clipper, signal-dependent controller, or instability masker was added.

Final local Release CPU smoke, expressed as hardware-run measurements rather than portable performance truth:

| Scenario | Median |
|---|---:|
| 16 notes, both oscillators, Unison 1/2/4, Amount 0 | 20.7426 / 24.3845 / 32.8531 ms |
| Unison-4 / Unison-1 ratio | 1.58385, limit 8.0 |
| Unison 4, Amount 0 / maximum active modulation | 32.8531 / 35.1180 ms |
| Active / Amount-zero ratio | 1.06894, limit 2.0 |

Against the recorded V0.6.5 Unison-4 baseline of 32.4853 ms, final V0.7 Amount-zero time was approximately 1.13% higher in this local run.

## 24. Final build and test results

Final configure:

```powershell
cmake --fresh -S . -B build -G "Visual Studio 18 2026" -A x64
```

| Configuration | Build | CTest | Duration | Compiler errors | New compiler warnings |
|---|---|---|---:|---:|---:|
| Debug | pass | 20/20 pass | 11.72 s tests | 0 | 0 |
| Release | pass | 20/20 pass | 2.05 s tests | 0 | 0 |

An iterative build exposed one source shadowing warning; the local variable was renamed before the final builds. An unrelated CMake helper environment warning seen during iteration was eliminated in the final build environment. Both final build logs contained no warnings.

## 25. Standalone smoke and technical GUI boundary

Both local Standalones were launched as real GUI processes. Each produced a nonzero native window handle titled `DeepPluck` and exited cleanly after a normal close request:

- Debug Standalone: pass
- Release Standalone: pass

The automated GUI suite constructs the 1180 × 700 editor, verifies all four page states and 40 controls, and repeats editor lifecycle/page switching. Human visual quality, interaction feel, DPI scaling, and listening are intentionally still pending.

## 26. Artifacts, sizes, and SHA-256

| Artifact | Bytes | SHA-256 |
|---|---:|---|
| Debug VST3 binary | 24903680 | `9C1F11AE45B666DFBC3B01788E2241DACD232DED6DF7563835CBC1C9636E01B6` |
| Debug Standalone | 27291136 | `4ADDF4A077BCFBAFDD45251E2B05DA0E0A69604A1B065EFDEF4DCA928A81BF29` |
| Release VST3 binary | 7857664 | `3D82FDD3CC538B371185291572883C53373B7561BE1334E1C17E2D572FFDEC33` |
| Release Standalone | 9039872 | `4BC45CE44CDC7F209A0054495A5778FB6C620D56ABA827483F517002DDE01DC0` |

For Debug and Release, the project-local `Artifacts` VST3 binary and Standalone hash exactly match their corresponding `build/DeepPluck_artefacts` output. The complete VST3 bundles and applications exist in both configurations.

`moduleinfo.json` reports DeepPluck 0.7.0, vendor ToneTrax, Instrument/Synth categories, and the existing component/controller class IDs. `COPY_PLUGIN_AFTER_BUILD` remains false. `C:\Program Files\Common Files\VST3\DeepPluck.vst3` was absent after the builds; no system installation occurred.

## 27. Git and repository safety

- `git diff --check`: pass.
- Diff under `JUCE/`: empty.
- `build/` and `Artifacts/`: matched `.gitignore`, not staged or committed.
- Protected untracked user files: unchanged and uncommitted.
- Feature staging used an explicit path list; `git add .` was not used.
- No push occurred.
- Implementation commit: `61b2bba77a93f3709055af82317522994ce8c1ed` — `feat: add modulation engine`.
- This report is committed separately with `docs: add V0.7.0 implementation report`; its hash is reported in the final delivery response because a commit cannot contain its own hash.

## 28. Documentation changes

- `README.md`: current V0.7 feature, 40 controls, mappings, presets, state migration, active MODULATION page, tests, manual Cubase checklist, and limitations.
- `ARCHITECTURE.md`: LFO ownership, tempo cache, chunk distribution, formulas, restart, realtime policy, 40-parameter/preset/state contracts, GUI ownership, and 20-suite regression contract.
- `AGENTS.md`: confirmed reference milestone advanced to V0.7.0.
- `CMakeLists.txt`: numeric version 0.7.0, description, LFO sources, and two new CTest suites.
- This implementation report records the complete evidence and manual boundary.

## 29. Known limits and consciously excluded scope

- Exactly one global LFO; no per-voice phase.
- No modulation matrix and no oscillator-mix destination.
- No dotted or triplet sync divisions.
- No audio-rate oscillator modulation architecture.
- No Unison extension, effects, randomisation, or final GUI redesign.
- Oscillator-1 waveform expansion remains V0.7.5 scope.
- Host sample-accurate parameter queues remain outside the current once-per-block snapshot contract.

## 30. Automatable Definition of Done matrix

| Requirement | Result |
|---|---|
| Sound Manifest followed | pass |
| One global deterministic LFO | pass |
| Free/Sync, four waveforms, two restart modes | pass |
| Exact Filter/Pitch/Spread mappings | pass |
| Oscillator Mix excluded | pass |
| 20 ms Rate/Amount smoothing and 2 ms dezipper | pass |
| Shared sample values across 16 voices | pass |
| Release and voice-steal restart semantics | pass |
| 40 append-only parameters | pass |
| Legacy and partial-state migration | pass |
| Four presets and Custom behavior | pass |
| Functional MODULATION page, 40 attachments, no FX | pass |
| Amount-zero neutral | pass |
| Existing DSP/identity/bus/MIDI contracts | pass |
| Realtime-safety review | pass |
| Headroom/extreme/determinism/performance budgets | pass |
| At least 20 suites | 20 present |
| Debug build and tests | pass, 20/20 |
| Release build and tests | pass, 20/20 |
| VST3/Standalone/local artifact checks | pass |
| Compiler errors/new compiler warnings | 0/0 |
| No JUCE change/system install/push | confirmed |
| Protected user files preserved | confirmed |
| Separate implementation/report commits | implementation complete; report commit follows |

## 31. Manual verification still required

`MANUAL VERIFICATION REQUIRED - GUI AND LISTENING TESTS`

- Open MODULATION visibly and operate all eight controls.
- Verify Free/Sync enabled presentation and value readability.
- Audition subtle through strong Filter, small Pitch, and symmetric Spread movement.
- Compare all four waveforms, rate extremes, and Amount polarity.
- Confirm First Note versus overlapping-note/release/voice-steal restart by ear.
- Compare Soft and Long against the intended subtle preset movement.
- Compare low/high Resonance loudness at several Cutoff and Drive values.
- Confirm there are no clicks, zipper noise, unstable peaks, or unintended loudness changes.
- Inspect all four pages and all 40 controls at Windows scaling 100%, 125%, and 150%.

`MANUAL VERIFICATION REQUIRED - CUBASE, SYNC, STATE, AUTOMATION AND CPU`

- Scan as the same DeepPluck instrument and confirm existing plugin identity.
- Confirm first 32 parameter IDs/automation lanes remain compatible and eight IDs are appended.
- Test host tempo Sync at divisions and tempo changes, including transport behavior.
- Recall V0.6.5 and older projects with neutral Amount migration.
- Save/reload all 40 values in a new project.
- Write/read automation for all eight new parameters.
- Test held notes, release tails, voice stealing, multiple instances, realtime playback, and offline bounce.
- Compare host CPU for Amount zero and extreme active modulation.

## 32. Commit summary

- Implementation: `61b2bba77a93f3709055af82317522994ce8c1ed` — `feat: add modulation engine`.
- Report: separate commit `docs: add V0.7.0 implementation report`; hash supplied in final delivery.
- History was not rewritten and nothing was pushed.

## 33. Final status

**automatable DoD complete; manual V0.7.0 verification pending**
