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Ubify Core Engineering Team
SOFTWARE ENGINEERS & SYSTEMS ARCHITECTS
About This Tool
The Standard MIDI Event List & Piano Roll Visualizer inspects MIDI (.mid) sequence structures without requiring heavy digital audio workstation (DAW) software or desktop plugins. The interactive viewer renders a dynamic multi-channel piano roll canvas timeline alongside a detailed chronological SMF event list table.
Examine precise timing ticks, message types (NoteOn, NoteOff, Control Change such as CC #64 Sustain), MIDI channels (1โ16), musical note names (e.g., C4, E4, G4), and velocity levels (0โ127). The built-in transport controller lets you audition the sequence in real time using your browserโs native Web Audio API synthesizer oscillators. All MIDI parsing, timeline canvas rendering, and audio synthesis run 100% on-device in your client browser session. No musical files, compositions, or sequence streams are uploaded to any server.
How to Use
- 1
View the loaded demo sequence or upload your own Standard MIDI (.mid) file.
- 2
Review the chronological event list table detailing tick position, message type, channel, note, and velocity.
- 3
Observe the animated piano roll canvas displaying pitch heights and duration blocks over time.
- 4
Click Play to audition the sequence through the integrated Web Audio synthesizer.
Frequently Asked Questions
Can I upload my own .mid files to visualize?
Yes. You can inspect local Standard MIDI (.mid) files directly in your browser without uploading them to any remote server.
How does the audio playback feature work?
Playback uses the browser native Web Audio API to trigger polyphonic synthesizer oscillators corresponding to the pitch, velocity, and timing ticks parsed from the MIDI stream.
Are my original musical compositions or MIDI files saved on a server?
No. File parsing and canvas visualization evaluate strictly in client-side browser memory. Your music remains 100% private on your machine.