1
Load A
Click Load in the A section and choose a factory IR, your own IR or any WAV. This is your first fingerprint.
User manual
Impulse Anvil explained.
Start simple: load an IR or WAV, listen, morph, edit and bake. Then go deeper into Color, Texture Depth, spectral morphing and reverse IR slicing when you want more experimental results.
Quickstart
Load a fingerprint and listen.
Impulse Anvil can behave like a convolution reverb, but its deeper purpose is creating new impulse responses from recordings, IRs and sound textures.
2
Load B
Use B when you want a second world to morph toward: a room into fabric, a cab into ice, a click into a metallic tail.
3
Shape and bake
Use Morph, EQ, Edit and Output to shape the result. When it feels special, Bake it as a reusable WAV IR.
Precision dragging
- Hold Shift before dragging for finer movement.
- Hold Ctrl before dragging for extremely fine adjustment.
- Use lower Wet Level while browsing loud or unknown IRs.
Best first experiment
Record a snap, clap, cloth rub or short scrape with your phone, load it into A, put Anvil on a piano or synth and listen in Wet Only. That is the core idea in one minute.
Interface sections
What each section does.
The plugin is laid out from left to right and top to bottom: sources, morphing, EQ, waveform edit and final output.
IR A / IR B
Each side loads one source IR or WAV. Time changes the source length before processing. Gain balances the IR when normalization is not doing the comparison for you.
Color rows
Each IR has two Color rows. A row makes a stretched, delayed and level-adjusted copy of the IR, then mixes it back into the slot to add complexity.
Morph
The center section blends A and B. Use Time Morph for predictable blends, spectral modes for more synthetic hybrids, and A→B Lerp when you want a single IR that evolves over its own tail.
Align Peaks
Peak alignment keeps transients coherent. Disable it when you want offset, ghosting or stranger timing between the two sources.
EQ
The visual EQ shapes the prepared IR. High-pass removes rumble, low-pass controls harshness, bell filters target resonances and Tilt quickly shifts the IR darker or brighter.
Resonance assist
The display highlights strong energy areas so you can quickly locate ringing, whistling or heavy resonant spots inside the IR.
Edit
The waveform shows the prepared IR. Set Pre, Start, End, Fade In and Fade Out to isolate useful pieces of long recordings or remove unwanted tails.
Long IR browsing
A five-second recording can contain many short interesting spaces. Use Start and End to scan the waveform and turn tiny moments into usable IRs.
Output
Set IR input, Wet Level, Dry/Wet, output gain and stereo Width. Limiter and Normalize help keep exploration controlled while browsing, randomizing and baking.
Width
0.0 narrows toward mono, 1.0 keeps the original stereo image, and 2.0 expands side information. This is useful because many IRs carry strong stereo character.
Color + Texture
Color adds layers. Texture recursively recolors them.
Color is the first deep sound-design layer in Impulse Anvil. It does not add a normal effect after the plugin; it changes the impulse response before convolution.
Time
Stretches or compresses the Color copy. Longer values create bigger, slower tails; shorter values tighten and brighten the fingerprint.
Offset
Moves the Color copy later in time. This can create slap, pre-echo, delayed body or ghost reflections.
Amount
Controls how strongly the Color copy is mixed into the base IR. Start low, then raise it when the character is useful.
Texture Depth
Texture Depth uses the enabled Color settings recursively. The result is recolored, then the recolored result is used as the source for the next layer, alternating Color 1 and Color 2. Depth is limited for stability, and it only works when Color is enabled because it needs a Color transformation to recurse through.
Base IR → Color layer → recolored layer → deeper texture layers
Morph engine
Seven approaches for A to become B.
Before morphing, each endpoint can already have time stretch, gain, Color and Texture applied. The morph engine works on those prepared endpoints.
Time Morph
Predictable sample/time-domain blend. Use it for natural room blending, cab blending and reliable first results.
Spectral Morph
Blends frequency-domain character for more fused, synthetic or tone-driven results.
Spectral BandSwap
Alternates spectral regions between A and B so different frequency areas can feel like different spaces.
Spectral ZigZag
A more experimental spectral pattern for glitchy, striped, phasey or impossible spaces.
Stereo Slot Swap
Moves the A/B relationship in opposite directions across the left and right channels, creating a spatial A/B field rather than a simple pan effect.
Mid/Side Boundary
Keeps Slot A toward the center field while introducing Slot B into the side field. Morph controls how strongly that center/outside boundary is expressed.
A→B Lerp
A→B Lerp is not a live knob movement. It creates one static IR whose internal tail moves from A toward B over time. Choose the curve and Lerp Time, then bake it into a single WAV IR.
Edit range
Turn one long recording into many short IRs.
Start, End, Fade In and Fade Out follow the prepared IR length. This makes long material practical: scroll through a recording and isolate the one resonance, hit, rattle or tail that actually works.
Forward range
When Start is before End, the selected region plays forward. Use this for normal trimming, removing silence and focusing the useful part of an IR.
Reverse range
When Start is later than End, Impulse Anvil creates a reversed slice between those endpoints. Fades and processing then apply to that resolved slice, making reverse textures fast to design and bake.
Pre
Adds silence before the IR. This behaves like predelay and remains outside the reversed slice.
Fades
Fade In and Fade Out prevent clicks and make tiny slices usable as smooth filters or short spaces.
Bake / export
Commit the accident before it disappears.
The true power of Impulse Anvil is not only processing a track in the moment. It lets you build a personal IR library from the rooms, noises, surfaces and experiments you discover.
Bake Current
Exports the currently prepared IR as a WAV file: the source, Color, Texture, morph state, Edit, EQ and Output sculpting that define the current sound.
Bake A→B
Exports a single IR that evolves from A toward B over its tail using the selected curve and Lerp Time.
Use anywhere
Baked files are standard WAV impulse responses, so you can load them into compatible convolution reverbs, IR loaders and cab tools.
Good sources to try
- Short claps, snaps or clicks in rooms.
- Fabric rubbing, leaves, paper, metal, glass and concrete.
- Existing cab and room IR libraries.
- Short slices from field recordings and noise beds.
Instrument tips
- Synths, guitars, piano and vocals can take large surreal spaces well.
- For bass, start with very short IR ranges and control low-end with HP/EQ.
- Bake often when Random finds something unusual.
Install / activation
Copy the complete VST3 folder.
Impulse Anvil ships as a zipped Windows VST3 folder bundle with the 126 handmade IR library inside.
1
Download
Download ImpulseAnvil_Windows_VST3.zip.
2
Extract + copy
Copy the full Impulse Anvil.vst3 folder to C:\Program Files\Common Files\VST3.
3
Activate
After purchase, paste the license key from your email into the License panel inside the plugin.