Arpeggiator pad · claude-opus-5
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
transcript · 14 messages
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
thinking
I need to verify that tone.min.js is present before proceeding with the build.
{"command":"ls -la /tmp/ws"}total 344 drwxr-sr-x. 2 node node 25 Aug 3 00:22 . drwxrwsrwx. 3 root node 16 Aug 3 00:22 .. -rw-r--r--. 1 node node 349169 Aug 3 00:22 tone.min.js
{"command":"grep -o 'version[^,]\\{0,30\\}' /tmp/ws/tone.min.js | head -5"}version:()=>i});var t={};s.r(t) version=i;const _i=1e-6;function mi(t
thinking
I'm checking the Tone version to ensure compatibility with PolySynth's constructor signature, then I'll write code that works with Tone 14 and later versions.
{"command":"grep -o '\"[0-9]\\+\\.[0-9]\\+\\.[0-9]\\+\"' /tmp/ws/tone.min.js | head"}"14.8.49"
thinking
I'm setting up a Tone.js audio project with a polyphonic synthesizer, reverb effects, and sequencing capabilities, then building out a user interface to control it.
/tmp/ws/index.html (12333 bytes)Successfully wrote 12333 bytes to /tmp/ws/index.html
thinking
Let me verify the note indexing logic works correctly—the name lookup uses the absolute value modulo 12 to get the note, then adds the octave, and the pads array should cover all 20 notes across the grid rows. I'll run a syntax check to make sure everything compiles.
{"command":"cd /tmp/ws && node -e \"\nconst fs=require('fs');const h=fs.readFileSync('index.html','utf8');\nconst m=[...h.matchAll(/<script(js ok 1
thinking
I've got an unused seqIdx variable that I can remove, and the nextIndex logic for the 'updown' case looks fine since the initial step is 0 and stays within pool bounds.
{"path":"/tmp/ws/index.html","edits":[{"oldText":" var seqIdx = [0,1,2,3,4,5,6,7,8,9,10,11]; // pool of scale indices used by arp\n\n","newSuccessfully replaced 1 block(s) in /tmp/ws/index.html.
Built `/tmp/ws/index.html`: - **Audio graph**: `PolySynth` (triangle w/ partials) → `Compressor` → `FeedbackDelay` → `Reverb` → out, plus a `MonoSynth` bass pulse. - **Pad grid**: 4×5 = 20 minor-pentatonic notes (pitch rises left→right, bottom→top), each pad hue-coded by scale degree, glow flash on trigger. Click/tap or keys `1-0 / q-p / a-;`. - **Arpeggiator**: `Tone.Loop` at 8ths over a 10-note pool with Up / Down / Up-Down / Random patterns, `Tone.Draw`-synced pad lighting, plus a 1-bar bass loop. - **Controls**: Play/Stop (also Spacebar), live tempo 50–200 BPM (`bpm.rampTo`), reverb wet slider, pattern + root selectors (rebuilds scale/grid). - Audio context started lazily via `Tone.start()` on first interaction; no external resources beyond local `tone.min.js`.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
Pentatonic synth pad plays notes and toggles play/stop via keyboard, but click/drag/wheel have no visible effect.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.