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Speaking Piano - Now with (somewhat decent) captions!

TheMcphearson
Demos
YouTube
3 HN users recommended this demo3 months2010–2023 score 3
Years with an HN recommendation, 2007–2026

HN recommends it as the canonical talking-piano example, uncanny and impressive once you read the captions.

A player piano is made to reproduce human speech, here reciting a European Environmental Criminal Court proclamation in German at the 2009 World Venice Forum. This upload adds subtitles so the words become understandable.

“This is a other great example” (HN, 2020)

3 recommendations · 2 citations · Demos

5 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@ssfrr May 2020 Recommends
on HN thread Sine-wave speech audio encoding
I love this demo. It’s a good example of how much our perception is affected by our priors. This is a other great example, where speech is synthesized with an acoustic piano (though the keys are controlled digitally, the sound is just from the hammers and strings). Without the subtitles you probably couldn’t understand, but it sounds pretty clear when you know what it’s saying already. [this video]
Speech synthesized on acoustic piano, clear once subtitled
@gizajob Aug 2023 Recommends
on HN thread Auditory illusions with examples from Daft Punk
It's the Shepard tone effect running in the background of the actual notes, which produce a mild illusion that they're ascending when they're not, but nevertheless they're moving up and then down in pitches so it's not a brilliant example. I think the author is a little confused in this short essay about a few things. His "talking piano" effect is just standard vocoding, which has made me think this is all fairly new to him and he's not an expert. THIS is a talking piano: [this video]
A true talking piano example

Citations, criticism and jokes

@merelysounds Jul 2022 Cites it
on HN thread Black MIDI
Loosely related, MIDI standard can be used to generate all kinds of sounds, even human speech on a real life piano. Here's a demonstration from 2009[1] and a recent article with more context [2]. [1]: [this video] [2]: [link]
2009 demo of human speech on a real piano

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

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