Arpeggiator pad · qwen3.8-max
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 · 8 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
Build a single index.html equipped with a Tone.js pad grid (pentatonic scale), synth + reverb, and an arpeggiator using Tone.Transport with a BPM slider and a play/stop button.
{"command":"ls -la /tmp/ws"}total 344 drwxr-sr-x. 2 node node 25 Aug 3 23:53 . drwxrwsrwx. 3 root node 16 Aug 3 23:53 .. -rw-r--r--. 1 node node 349169 Aug 3 23:53 tone.min.js
thinking
Write the index.html. Design: 2 octaves of C major pentatonic (C D E G A), 10 pads. Synth -> reverb -> destination. Arpeggiator: Tone.Transport with an 8th-note loop, a pattern that traverses the scale notes, BPM slider. Play/stop button.
/tmp/ws/index.html (7440 bytes)Successfully wrote 7440 bytes to /tmp/ws/index.html
thinking
Quick sanity check: tone.min.js is loaded via a relative path. Let me verify the syntax briefly with node (HTML can't be run, but at least the script contents can be checked). It's fine. Confirming the file exists.
{"command":"ls -la /tmp/ws && node -e \"\nconst html = require('fs').readFileSync('/tmp/ws/index.html','utf8');\nconst m = html.match(/<scritotal 352 drwxr-sr-x. 2 node node 43 Aug 3 23:53 . drwxrwsrwx. 3 root node 16 Aug 3 23:53 .. -rw-r--r--. 1 node node 7440 Aug 3 23:53 index.html -rw-r--r--. 1 node node 349169 Aug 3 23:53 tone.min.js inline scripts: 1 JS syntax OK
thinking
Wait — inline script check: there are 2 script tags (src one + inline). The regex `<script>` only matches the inline one. Good. Done.
Done — `/tmp/ws/index.html` is a single self-contained file (CSS in `<style>`, JS in `<script>`, loads `tone.min.js` via a relative `<script src>`). No network resources anywhere. **Features:** - **Pentatonic pad grid** — 10 pads covering two octaves of C major pentatonic (C4–A5), each labeled with solfège (Do/Re/Mi/Sol/La). Click/tap triggers a triangle-wave `Tone.PolySynth` voice with a quick attack and natural release. - **Reverb** — synth routes through `Tone.Reverb` (2.8 s decay, 35% wet) before the output. All audio is synthesized live; zero audio files. - **Arpeggiator** — a `Tone.Sequence` walks up and down the scale in 8th notes, with the active pad lighting up in sync via `Tone.Draw` for tight visual timing. - **Play/Stop button** — toggles `Tone.Transport`, flips to a red STOP state while running. - **Tempo slider** — 50–220 BPM, applied live with a smooth `bpm.rampTo`. - Handles the browser autoplay policy via `Tone.start()` on first interaction, and pads work on touch devices (`pointerdown` + `touch-action: manipulation`). JS syntax validated with Node; just open `index.html` in a browser to play.
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 synth UI responds to clicks and drags with highlighted pads, but keyboard input has no 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.