Piano synth · muse-spark-1.2
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
transcript · 6 messages
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
index.html (30858 bytes)Successfully wrote 30858 bytes to index.html
{"command":"ls -lh; echo \"---\"; head -n 5 index.html; echo \"---\"; grep -c \"tone.min.js\" index.html; grep -c \"ADSR\" index.html; ls -ltotal 376K -rw-r--r--. 1 node node 31K Aug 13 01:30 index.html -rw-r--r--. 1 node node 341K Aug 13 01:29 tone.min.js --- <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> --- 1 8 -rw-r--r--. 1 node node 341K Aug 13 01:29 tone.min.js
Piano built — **index.html** ready: - **Tone.js PolySynth** (`Tone.PolySynth(Tone.Synth)`, 16-voice) with real-time **ADSR** (Attack/Decay/Sustain/Release sliders) and waveform selector (sine/triangle/sawtooth/square) driving `oscillator.type` + envelope visualization canvas - **Visual keyboard**: 2 octaves (C4–B5, octave-shift with `Z`/`X` / on-screen ±), white/black keys with `active` glow, drop shadows, velocity slider, master volume - **Controls**: mouse / touch / drag-glide, **computer keys** `A W S E D F T G Y H U J K O L P ; ' ] \` mapped across 2 octaves, on-screen caps + bottom legend, Space-sustain pedal (latching reverb-style), "All Off" - **Feedback**: active key + computer-cap highlighting, *Now Playing* pills, note count, power indicator, envelope graph updating live; fully self-contained, no network — loads `tone.min.js` via `<script src="tone.min.js">`. Open `index.html` and click/press a key to start audio.
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
Full-featured piano UI with ADSR envelope, waveform selection, and keyboard mapping; arrow keys shift octaves, no visible key press highlight.
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.