u/LowFaithlessness426

When you hear an instrument, you can tell it's a piano, a violin, a drum — even if they're all playing the exact same pitch. We call that difference "timbre." But it made me wonder: can you actually explain what timbre is, physically?

In school you probably learned that pitch comes from frequency — how many times the air vibrates per second. But since the same pitch can have different timbres, frequency clearly isn't the answer.

If you've messed with synthesizers, you might guess it's waveform shape — sawtooth vs. square vs. pulse. That's closer, but still not quite right either: waveforms that look completely different can sound identical.

I dug into this and wrote it up (free, no signup) with interactive audio demos so you can test it on your own ears.
Link: https://sciencemusic.pages.dev/timbre/

This post was created using AI assistance (mainly translation).

I've been building a small web instrument called Puntone, and it's designed with touchscreens — iPad and similar tablets especially — in mind.

The core idea: most instruments make you choose between precise pitches (keyboard, frets) or continuous glide (theremin, fretless strings, pitch bend). Puntone tries to keep both — and the part I'm most excited about is that this works for full chords, not just single notes.

Instead of just bending one note theremin-style, you can glide an entire chord voicing into another with your finger — the whole chord slides as one continuous motion, like theremin-ing a chord shape instead of a single pitch. There's a dedicated chord-glide / dual-pad mode built around touch: one pad handles the root note's glide, the other morphs the voicing on top of it. It feels much more natural on a touchscreen than with a mouse.

Other things it does:

• Runs entirely in the browser (Web Audio API) — no install, no account
• Single-note mode also has full-time portamento (the "one-note theremin" experience), playable with a PC keyboard too if you don't have a tablet
• Adjustable glide time / decay in a settings panel
• Built-in recording, so you can layer takes
• No ads, no signup wall

It's a solo project and still evolving. I'd love feedback from people who actually write chord progressions — does gliding a whole chord feel musically useful, or does it read as gimmicky? That's the thing I most want to know.

Try it here: https://puntone-synth.pages.dev/

(Best on a tablet like iPad — touch is the primary input. Also works with Chrome/Edge on desktop via keyboard.)