# 2hp — Blur - [Manual PDF](../../manuals/2hp_Blur.pdf) --- [Manual PDF](https://www.twohp.com/modules/blur) # 2hp Blur — using it with other modules for melodic music Based on the manual, **2hp Blur** is a **spectral processor** that can turn short, harmonically rich sounds into stretched, smeared, pad-like material. It is not a pitch source by itself, but it is very useful for creating **melodic layers, sustained harmonic beds, and transformed lead voices** when paired with oscillators, voices, or pitch-related modules. ## What Blur does musically Blur has: - **Audio In / Out** - **Time** knob + CV - At far left: shorter, quicker playback - Center: roughly original playback speed - Far right: stretched up to **16x** - **Vibe** knob + CV - Low: timbre stays close to the input - High: the sound spreads into a washed, reverb-like spectral pad - **Mix** knob + CV - Dry/wet blend ### Musical implication Blur is best thought of as a **melody transformer**: - it can turn **plucks into pads** - make **single-note lines bloom into ambient tails** - smear **chords or intervals into harmonic textures** - create **sustained accompaniment** from short melodic material --- ## The module pairings from the manual and how they help melodic writing The manual suggests pairing Blur with: - **2hp Pluck** - **2hp Pitch** - **2hp Swarm** - **2hp Verb** Below is how each pairing contributes to melodic components. --- ## 1. Blur + Pluck: turning notes into melodic ambience The manual specifically says **Pluck** is a great candidate because it produces **sharp transients and intriguing harmonics** that Blur can turn into a wash. ### Why this works Pluck likely gives you: - a clearly pitched sound - a strong attack - rich harmonics That is perfect input for Blur, because Blur’s spectral processing has something harmonic to stretch and smear. ### Melodic use cases #### A. Pad from a sequence Patch: - Sequencer CV -> **Pluck V/OCT** - Gate/trigger -> **Pluck TRIG** - **Pluck OUT -> Blur IN** - **Blur OUT -> mixer/output** Set: - **Time** around 1–3 o’clock for longer note bloom - **Vibe** around noon to high for harmonic spreading - **Mix** to taste Result: - Your sequenced pluck becomes a **soft sustained melodic bed** - Good for ambient, downtempo, soundtrack, intro sections #### B. Ghost harmony behind an arpeggio Use a fast arpeggio into Pluck, then process through Blur with: - medium-high **Time** - medium **Vibe** - wet-heavy **Mix** Result: - the original rhythm can disappear into a **harmonic cloud** - useful as a background layer under a dry lead voice #### C. Expressive call-and-response If you can modulate Blur: - use CV into **Time CV** or **Vibe CV** - lower the mix for verses, raise it for transitions Result: - same melody can alternate between **defined plucks** and **blurred sustain** ### Best melodic role - accompaniment - harmonic wash - supportive countermelody layer --- ## 2. Blur + Pitch: playable blurred melodies The manual explicitly recommends putting **Pitch after Blur**: > Pitch shift your blurred spectral signal ... turn any audio source into a v/oct tracking bed of sound. This is probably the most directly melodic pairing in the document. ### Why this works Blur creates: - sustained spectral material - a harmonically rich signal Pitch then allows that material to be: - shifted melodically - played as a pitched voice - tracked with **V/Oct** ### Patch idea - Sound source or Pluck -> **Blur IN** - **Blur OUT -> Pitch IN** - Sequencer CV -> **Pitch V/OCT** - **Pitch OUT -> mixer/output** ### Melodic use cases #### A. Turn texture into a lead Feed any harmonically rich source into Blur, then into Pitch. Set Blur for: - center to high **Time** - medium/high **Vibe** Then sequence **Pitch** melodically. Result: - an ethereal, sustained, pitch-tracked voice - useful for leads that feel halfway between synth and sampled choir #### B. Harmonized drones Use a static or repeating input into Blur and sequence only a few notes in Pitch. Result: - a drone can become a **slow melody line** - excellent for modal or minimal composition #### C. Layered intervals If you mult the source: - dry source to one mixer channel - blurred + pitch-shifted source to another Tune Pitch to: - octave - fifth - third, if the patch tolerates it Result: - instant melodic doubling or pseudo-harmony ### Best melodic role - lead voice - octave/interval support - playable ambient top line --- ## 3. Blur + Swarm: lush melodic oscillator textures The manual says **Swarm**’s hyper-saws and pulse waves are ideal for Blur to smear. ### Why this works Swarm likely generates: - very rich harmonic content - supersaw-like density - synth-friendly stable pitch Blur turns that into: - lush sustained pads - softened chordal or monophonic textures - evolving melodic timbres ### Melodic use cases #### A. Big mono lead Patch: - Sequencer CV -> **Swarm pitch/freq** - **Swarm OUT -> Blur IN** - **Blur OUT -> output** Set: - lower **Vibe** for clearer pitch definition - moderate **Time** - moderate **Mix** Result: - melodic clarity remains, but the edges soften - great for cinematic melodies #### B. Pad bass or low-register melody Sequence Swarm in a lower octave and use Blur conservatively. Result: - bass notes gain body and sustain - useful for slow melodic basslines #### C. Chord illusion from single notes Because Blur spreads spectral content, a rich single oscillator voice can feel wider and more chord-like. Result: - monophonic melodic lines feel larger and more harmonically complex ### Performance tip For melody, don’t always max **Vibe**. Too much can reduce note definition. For articulate melodic parts: - **Vibe low to medium** - **Time medium** - **Mix around 30–60% wet** ### Best melodic role - lush lead - melodic bass texture - pad-like mono voice --- ## 4. Blur + Verb: expanding melodic space The manual suggests using **Verb** to make Blur even bigger, and notes that because Verb is stereo, two Blurs could be used before or after it. ### Why this matters melodically Verb doesn’t create melody, but it helps place melodic material in space. ### Use cases #### A. Blur before Verb Patch: - voice -> **Blur -> Verb** Result: - Blur shapes the harmonic smear first - Verb adds room/stereo depth afterward - best for **pads, melodic washes, sustained hooks** #### B. Verb after a melodic lead A dry melody can be layered with a blurred-then-reverbed duplicate. Result: - the dry signal keeps note definition - the wet chain creates emotional size #### C. Two-Blurs-into-Verb concept The manual mentions using **2 Blurs** with stereo Verb. Possible approach: - Left melodic source -> Blur 1 - Right melodic source or duplicate -> Blur 2 - Both into Verb stereo inputs Result: - wide stereo melodic pad field - especially useful if you have two related sequences or interval voices ### Best melodic role - spatial enhancement - ambient accompaniment - stereo widening of melodic material --- # Practical melodic patch recipes ## Patch 1: Plucked melody into ambient pad **Goal:** convert a simple sequence into a sustained melodic layer Patch: - Sequencer CV -> **Pluck V/OCT** - Trigger pattern -> **Pluck TRIG** - **Pluck OUT -> Blur IN** - **Blur OUT -> mixer** Blur settings: - **Time:** 2 o’clock - **Vibe:** 1–3 o’clock - **Mix:** 60–80% wet Musical result: - notes retain pitch center - phrase becomes legato and atmospheric - ideal under vocals or another lead --- ## Patch 2: Ambient lead with pitch tracking **Goal:** playable blurred lead voice Patch: - Oscillator/Pluck/Swarm -> **Blur IN** - **Blur OUT -> Pitch IN** - Sequencer keyboard CV -> **Pitch V/OCT** - **Pitch OUT -> mixer** Settings: - **Blur Time:** noon to 2 o’clock - **Blur Vibe:** noon - **Blur Mix:** 50–70% Musical result: - smooth and melodic - less percussive than the original source - good for hooks and slow lead lines --- ## Patch 3: Dry melody + blurred melodic shadow **Goal:** keep note clarity while adding emotion Patch: - Voice output multed to: - mixer channel 1 dry - **Blur IN** on channel 2 - Blend dry and Blur return externally or with Blur’s own Mix Settings: - **Time:** medium-high - **Vibe:** medium - **Mix:** moderate Musical result: - clear main melody - blurred tail acts like a harmonic shadow - excellent for melodic techno, ambient house, filmic electronica --- ## Patch 4: Swarm pad melody **Goal:** lush synth melody Patch: - Sequencer CV -> **Swarm pitch** - **Swarm OUT -> Blur IN** - **Blur OUT -> Verb IN** if available - **Verb OUT -> mixer** Settings: - **Vibe:** low-medium for pitch clarity - **Time:** medium-high - **Mix:** 40–70% Musical result: - supersaw-style melodic line becomes polished and cinematic - can function as the main musical statement in sparse arrangements --- # CV strategies for more expressive melodies Blur has CV over: - **Time** - **Vibe** - **Mix** All CV inputs accept **-5V to +5V**. ## Good modulation ideas ### 1. Modulate Mix by phrase section - lower mix during busy passages - increase mix at phrase endings This makes melodies “open up” musically. ### 2. Modulate Time slowly A slow LFO or envelope into **Time CV** can make notes stretch differently over time. Effect: - evolving sustain - less repetitive melodic loop feel ### 3. Modulate Vibe with dynamics If you have a related modulation source, push **Vibe** higher on accented notes. Effect: - certain melody notes bloom more than others - very expressive in slow lines --- # Best practices if you want clearly melodic results Because Blur is a spectral smearing effect, it can reduce pitch definition if pushed too far. For melodies: ## Keep pitch recognizable by: - starting with a **strongly pitched source** - using **moderate Vibe** instead of maximum - keeping **Time near center to moderate stretch** - blending some **dry signal** with Mix ## Push it further when you want: - pads instead of leads - harmonic fog - transitions, breakdowns, intros, outros --- # Installation / technical notes from the manual ## Specs - **Width:** 2HP - **Depth:** 46mm - **Power:** +12V = 85mA, -12V = 7mA, +5V = 0mA ## Signal ranges - **Audio In:** 10Vpp - **Audio Out:** 10Vpp - **Time CV / Vibe CV / Mix CV:** -5V to +5V ## Power cable note For 2hp modules, the red stripe on the ribbon should align with the **white marker line** on the PCB above the power header. --- # Overall musical takeaway **2hp Blur is best used as a melodic enhancer rather than a melody generator.** It excels at turning: - **Pluck** into ambient pitched textures - **Swarm** into lush melodic pads/leads - **Pitch** into a way to make blurred material track musically - **Verb** into the final spatial polish for melodic beds If your goal is to build melodic components, Blur is especially strong for: - **sustained harmony from short notes** - **cinematic lead textures** - **background melodic layers** - **pitch-shifted ambient voices** - **melodic transitions and phrase tails** In a patch, I’d think of it as the module that gives your notes **memory and atmosphere**. [Generated With Eurorack Processor](https://github.com/nstarke/eurorack-processor)