Arpeggiator pad · gemma-4-26b-a4b-it
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 · 6 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
The user wants a single-page web app in `index.html`.
It should use `tone.min.js` (already present in the current directory).
The app should have:
1. A clickable pentatonic pad grid.
2. A synth voice with reverb.
3. A play/stop button for an arpeggiator sequence.
4. An adjustable tempo.
5. No external resources or CDNs.
6. All sound synthesized.
Plan:
1. Check if `tone.min.js` exists.
2. Create `index.html` with:
- HTML structure: Play/Stop button, Tempo slider, Grid of pads.
- CSS: Styling for the grid, buttons, slider, and layout.
- JS:
- Load `tone.min.js`.
- Setup Tone.js components (Synth, Reverb, Transport).
- Create the pentatonic scale (e.g., C Pentatonic: C, D, E, G, A).
- Implement the grid interaction (play sound on click).
- Implement the arpeggiator logic using `Tone.Transport`.
- Implement tempo control.
Let's start by checking the directory content.{"command":"ls -F"}tone.min.js
thinking
`tone.min.js` is present. Now I will design the app. **Pentatonic Scale:** C4, D4, E4, G4, A4, C5, D5, E5, G5, A5 (Two octaves) **Grid:** A grid of pads. Maybe 2 rows of 5 or something similar. Or just a simple layout. **Synth:** `Tone.PolySynth` with a `Tone.Synth` or `Tone.AMSynth` or `Tone.FMSynth`. Connected to a `Tone.Reverb`. **Arpeggiator:** A sequence of notes from the pentatonic scale that plays automatically when "Play" is pressed. **Tempo:** `Tone.Transport.bpm` controlled by a slider. Let's write the code.
index.html (6146 bytes)Successfully wrote 6146 bytes to index.html
thinking
I have written the `index.html` file. I should verify if it works as expected. Since I cannot "run" a web browser and interact with it, I've ensured the code follows the requirements: - Single file `index.html`. - Uses `tone.min.js`. - Pentatonic scale. - Synth + Reverb. - Play/Stop button + Arpeggiator. - Tempo control. - No external resources. Let me double check the pentatonic scale I used. `C4, D4, E4, G4, A4, C5, D5, E5, G5, A5` - This is a C Major Pentatonic scale. One detail: `Tone.Sequence` uses `time` as the first argument. My visual feedback code used `Tone.Draw.schedule` which is correct for synchronizing visual updates with the audio transport. Wait, I used `setTimeout` inside `Tone.Draw.schedule`. While it might work, it's better to be careful with timing. However, for a simple visual highlight, it should be fine. Let's review the code one more time. - The `synth.triggerAttackRelease(note, '4n', time)` is correct for `Tone.Sequence`. - The `Tone.start()` is called on the first click, which is necessary for browsers. - The `Tone.Transport.bpm.value` is updated. The requirements say: "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." My implementation: - Clickable pads: Yes. - Synth voice with reverb: Yes. - Play/stop button: Yes. - Arpeggiator sequence: Yes (it plays the notes of the scale). - Adjustable tempo: Yes. I noticed I used `setTimeout` for removing the `playing` class. This is okay, but I could also do it more cleanly. For a self-contained single-file app, this is acceptable. One thing: I used `Tone.PolySynth(Tone.Synth, ...)` which is fine. I'll make sure the `tone.min.js` is actually used as requested. `<script src="tone.min.js"></script>` is used. I think the code is solid. I'll provide the final file.
I have built the single-page pentatonic pad grid application. It features a polyphonic synth with reverb, a clickable grid of pads based on the C Major pentatonic scale, an arpeggiator that cycles through the scale, and an adjustable tempo control. The application is fully self-contained in `index.html` and uses the local `tone.min.js` for all audio synthesis. ```html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Pentatonic Pad Grid</title> <style> body { margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; background-color: #121212; color: #e0e0e0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; } .container { text-align: center; background: #1e1e1e; padding: 2rem; border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); } h1 { margin-bottom: 1.5rem; font-weight: 300; letter-spacing: 2px; } .controls { margin-bottom: 2rem; display: flex; align-items: center; justify-content: center; gap: 20px; } button { padding: 10px 25px; font-size: 1rem; cursor: pointer; background: #3f51b5; color: white; border: none; border-radius: 4px; transition: background 0.3s, transform 0.1s; } button:hover { background: #5c6bc0; } button:active { transform: scale(0.95); } button.stop { background: #f44336; } button.stop:hover { background: #ef5350; } .slider-container { display: flex; flex-direction: column; align-items: center; gap: 5px; } input[type=range] { width: 150px; } .grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 15px; margin-top: 10px; } .pad { width: 60px; height: 60px; background: #333; border-radius: 8px; cursor: pointer; transition: background 0.2s, transform 0.1s, box-shadow 0.2s; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; user-select: none; } .pad:hover { background: #444; } .pad:active { transform: scale(0.9); } .pad.playing { background: #3f51b5; box-shadow: 0 0 15px #3f51b5; } .label { font-size: 0.9rem; color: #aaa; } </style> </head> <body> <div class="container"> <h1>Pentatonic Pad</h1> <div class="controls"> <button id="playStopBtn">Play</button> <div class="slider-container"> <span class="label">Tempo: <span id="tempoVal">120</span> BPM</span> <input type="range" id="tempoSlider" min="60" max="200" value="120"> </div> </div> <div class="grid" id="padGrid"> <!-- Pads will be generated here --> </div> </div> <script src="tone.min.js"></script> <script> // Configuration const pentatonicScale = [ 'C4', 'D4', 'E4', 'G4', 'A4', 'C5', 'D5', 'E5', 'G5', 'A5' ]; // State let isPlaying = false; // Audio Setup const reverb = new Tone.Reverb({ decay: 4, wet: 0.5 }).toDestination(); const synth = new Tone.PolySynth(Tone.Synth, { oscillator: { type: 'triangle' }, envelope: { attack: 0.1, decay: 0.2, sustain: 0.5, release: 1 } }).connect(reverb); // Arpeggiator setup const seq = new Tone.Sequence((time, note) => { synth.triggerAttackRelease(note, '8n', time); // Visual feedback for arpeggiator Tone.Draw.schedule(() => { const padIdx = pentatonicScale.indexOf(note); if (padIdx !== -1) { const pads = document.querySelectorAll('.pad'); pads.forEach(p => p.classList.remove('playing')); pads[padIdx].classList.add('playing'); // Remove highlight after short delay setTimeout(() => { pads[padIdx].classList.remove('playing'); }, 150); } }, time); }, pentatonicScale, '4n'); // DOM Elements const playStopBtn = document.getElementById('playStopBtn'); const tempoSlider = document.getElementById('tempoSlider'); const tempoVal = document.getElementById('tempoVal'); const padGrid = document.getElementById('padGrid'); // Generate Pads pentatonicScale.forEach((note, index) => { const pad = document.createElement('div'); pad.className = 'pad'; pad.innerText = note; pad.dataset.note = note; pad.addEventListener('mousedown', () => { synth.triggerAttackRelease(note, '4n'); }); padGrid.appendChild(pad); }); // Play/Stop logic playStopBtn.addEventListener('click', async () => { if (Tone.context.state !== 'running') { await Tone.start(); } if (isPlaying) { Tone.Transport.stop(); seq.stop(); playStopBtn.innerText = 'Play'; playStopBtn.classList.remove('stop'); // Clear all pad highlights document.querySelectorAll('.pad').forEach(p => p.classList.remove('playing')); } else { Tone.Transport.start(); seq.start(0); playStopBtn.innerText = 'Stop'; playStopBtn.classList.add('stop'); } isPlaying = !isPlaying; }); // Tempo control tempoSlider.addEventListener('input', (e) => { const bpm = e.target.value; tempoVal.innerText = bpm; Tone.Transport.bpm.value = bpm; }); </script> </body> </html> ```
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
Static pentatonic pad UI with Play button and tempo slider; no visible reaction to click, drag, wheel, or keys since audio can't be captured visually.
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.