Arpeggiator pad · gpt-oss-20b
No runnable output Cost / run $0.0000 Runtime 5.5s
Prompt for this run
Build a pentatonic synthesizer pad grid and arpeggiator using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
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Transcript · 3 messages
Build a pentatonic synthesizer pad grid and arpeggiator using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
thinking
We need to create index.html containing: - Include tone.min.js via script src="tone.min.js" (since provided in dir). - Build UI with grid of 10 pads for two octaves: C major pentatonic: notes C D E G A? Actually C pentatonic: C D E G A. For two octaves, 10 notes in ascending order: C4 D4 E4 G4 A4 C5 D5 E5 G5 A5. Should show labels accordingly. - Each pad has separate toggle for selection: maybe a checkbox on each pad. - Active pad when clicked: highlight border. - Clicking plays note via Tone synth with reverb. - Arpeggiator: Sequence of selected notes ascending pitch. Use scheduler or Transport scheduleRepeat at 0.5 step. Step duration according to tempo (beat duration). Eighth note: step of 0.5 beats. So we schedule repeat at "0.5" with `Transport.scheduleRepeat(callback, "0.5")`. The sequence should iterate through selected notes in ascending pitch. When selection changes, next cycle should adapt. - Need Play, Stop, tempo control 60-180 BPM. Use UI controls: Play button, Stop button, input range slider. - Tempo control affects `Tone.Transport.bpm.value`. Should update while play. - Activation: user gesture: click Play button must call `Tone.start()` if not already started. Also pad click should start? Actually requirement says "Activate audio through a user gesture". So on first play or pad click we ensure Tone.start(). - Stop: prevents new notes but allows existing release and reverb tails. So stop should not kill all: use Transport.stop() to stop scheduler. - Repeated Play must not create overlapping schedulers: so we track if a repeating schedule exists; on play,