[Blabber] A piano project, advice?

Guan Yang guan at yang.dk
Wed May 8 19:19:51 UTC 2013


A project that does something similar (with the audio part):

http://dangerousprototypes.com/forum/viewtopic.php?f=19&t=5452&p=52058#p52058

Cortex-M4 sounds like the minimum microcontroller you'd need to do
something like this. Of course a BeagleBone Back or Raspberry Pi could
surely do it.


On Wed, May 8, 2013 at 1:52 PM, Ben S <ben.sugimori at gmail.com> wrote:

> One must also keep in mind that rhythm and dynamics are important
> characteristics of a melody, so it's not simply a series of notes in a
> specific order, but also phrasing, note length, rests, etc.
>
> It would seem something more powerful than an Arduino would be required.
> Maybe hijacking a pre-existing software for melody recognition, with all
> the filtering already dealt with.
>
> Starting at the ground level on this would be very ambitious, and likely
> take longer than she would like.
>
> BenS
>
> On May 8, 2013, at 13:11, <fractal at maui.net> wrote:
>
>
> Making 88 of anything without a manufacturing rig prolly is a nightmare
> --- rmd6502 at gmail.com wrote:
>
> From: Robert Diamond <rmd6502 at gmail.com>
> To: Hack Manhattan! <blabber at list.hackmanhattan.com>
> Subject: Re: [Blabber] A piano project, advice?
> Date: Wed, 8 May 2013 12:03:08 -0400
>
> Or maybe use 88 chip inductors, and detect the vibration of the strings,
> which would give you velocity information also.  That would be a more
> complex circuit, since essentially 88 individual oscillators and
> comparators, then connected through an analog mux back to a processor.
>
> On May 8, 2013, at 11:55 AM, Robert Diamond <rmd6502 at gmail.com> wrote:
>
> Might be - I think the harmonics' amplitudes fall off geometrically - but
> chords and pedals would confuse it, true.
> On May 8, 2013, at 11:49 AM, <fractal at maui.net> wrote:
>
> Piano strings generate many harmonics.  Maybe a flat-out sample matcher
> would be best
>
> --- rmd6502 at gmail.com wrote:
>
> From: Robert Diamond <rmd6502 at gmail.com>
> To: Hack Manhattan! <blabber at list.hackmanhattan.com>
> Subject: Re: [Blabber] A piano project, advice?
> Date: Wed, 8 May 2013 11:46:44 -0400
>
> Maybe something like https://github.com/slytown/arduino-spectrum-analyzer- the tonic should be the strongest frequency
>
> On May 8, 2013, at 11:40 AM, <fractal at maui.net> wrote:
>
>
> If it involves an actual piano, count me in. It is impossible to keep my
> chops up without one and I don't have the space
> Is this related to the project a couple years back with pianos salted all
> around NYC?
> --- rendall at gmail.com wrote:
>
> From: Rendall Ren <rendall at gmail.com>
> To: "Hack Manhattan!" <blabber at list.hackmanhattan.com>
> Subject: [Blabber] A piano project, advice?
> Date: Tue, 7 May 2013 16:56:30 -0400
>
> Hi everyone.
>
> My friends are doing one of the 88 "Sing for Hope" Pianos
> http://singforhope.org/the-sing-for-hope-pianos/  Theirs will be in
> Tompkins Square Park.
>
> The project lead, Nicolina Johnson, had the idea to have "something
> happen" when a particular melodic sequence is played on the piano.  This
> "something" can be anything, really: a jack-in the box pops up, or a light
> goes on, or a little window opens, or a recorded sound emits from the
> piano.
>
> If you were going to make that project, how would you do it?
>
> And, if you want to actively help  make it happen, email me.
>
> Thanks!
> Rendall
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