Arpeggiator pad · qwen3.8-2.4t-a95b
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 · 12 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
Verify that tone.min.js exists, then create index.html.
{"command":"ls -la /tmp/ws && head -c 200 /tmp/ws/tone.min.js"}total 344 drwxr-sr-x. 2 node node 25 Aug 13 01:24 . drwxrwsrwx. 3 root node 16 Aug 13 01:24 .. -rw-r--r--. 1 node node 349169 Aug 13 01:24 tone.min.js /*! For license information please see Tone.js.LICENSE.txt */ !function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"ob
thinking
Build a single-file app: 16-pad grid (2 octaves of A minor pentatonic), PolySynth/MembraneSynth? Use PolySynth → Reverb → output. Arpeggiator with a Loop that steps through the pattern, tempo slider. Play/stop buttons. Visual feedback.
/tmp/ws/index.html (8378 bytes)Successfully wrote 8378 bytes to /tmp/ws/index.html
thinking
Verify the basics: file existence, syntax check. Can I use node to parse the JS? Extract it quickly. If jsdom were available, a simple sanity check with node would be possible, but probably not. At the very least, I'll confirm that the file exists, and do a JS syntax check by extracting the script.
{"command":"cd /tmp/ws && ls index.html && node -e \"\nconst html = require('fs').readFileSync('index.html','utf8');\nconst m = html.match(/index.html JS syntax OK, script length: 3959
thinking
Also, should I do a sanity check with the Tone global using node? tone.min.js is UMD, so I can load it in node and verify things like the existence of PolySynth.
{"command":"cd /tmp/ws && node -e \"\nconst fs=require('fs');\n// stub browser globals so the UMD bundle loads in node\nglobal.window={}; gl* Tone.js v14.8.49 * Tone global: false PolySynth: false Reverb: false Loop: false Transport: false
thinking
The UMD factory detects CommonJS in Node, so `module.exports = e()` runs instead of assigning to a global. In a browser with a normal `<script src>` tag, `module`/`exports` are undefined, and it falls through to `t.Tone = e()` — meaning the global `Tone` works as expected in the browser. So no problem there. I just need to verify via a require-like trick, or by clearing `module`... An easier way: evaluate with `module` shadowed.
The global assignment was skipped in Node only because the UMD wrapper detected CommonJS; in a browser `<script>` tag it falls through to `window.Tone`. Verifying:
{"command":"cd /tmp/ws && node -e \"\nconst fs=require('fs');\nconst sandbox={window:{}}; sandbox.window.window=sandbox.window;\nconst code=* Tone.js v14.8.49 * Tone global via script-tag path: true | PolySynth: true Reverb: true Loop: true Transport: true start: true
thinking
Everything verified. Summarizing.
Done — `index.html` is in `/tmp/ws`, fully self-contained, using only the local `tone.min.js` (verified: loads as global `Tone` v14.8.49 via plain `<script src>`, and the inline JS passes syntax checks). No network requests anywhere. **What it includes:** - **Pad grid (4×4):** 16 clickable pads mapped to C minor pentatonic, C3→C6. Each pad flashes purple on hit. Also playable via keyboard rows `1-4`, `Q-R`, `A-F`, `Z-B`. - **Synth voice with reverb:** a `Tone.PolySynth` (fat sawtooth, 3 detuned oscillators) routed through `Tone.Reverb` (2.8s decay, 45% wet) to the destination — all synthesized, no samples. - **Play/Stop arpeggiator:** a `Tone.Loop` on 16th notes walks a ping-pong pattern (low→high→low across the 16 notes), triggering the same synth/pad visuals with sample-accurate timing via `Tone.Draw`. - **Adjustable tempo:** slider from 60–240 BPM, applied live via `Tone.Transport.bpm.rampTo` even while playing; label updates in real time. - Audio context is created/lazily unlocked on first interaction (`Tone.start()`), so it works with browser autoplay policies; Space toggles play/stop.
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 pad grid with play/stop, tempo slider, and keyboard-triggered pad highlights show interactive arpeggiator response.
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.