Re: [LAU] iPad and Linux audio

On 02/19/2012 07:57 PM, Robin Gareus wrote:
> On 02/19/2012 07:33 PM, Renato wrote:
>> On Sun, 19 Feb 2012 17:53:37 +0000
>> Fons Adriaensen <fons@email-addr-hidden> wrote:
>>
>>> On Sun, Feb 19, 2012 at 04:11:55PM +0100, Renato wrote:
>>>
>>>> I'd like to understand how the sensors work, but his site doesn't
>>>> seem to go much in depth on this... it says the sensors register
>>>> the sounds of the undercutaneous muscles. But are those even in the
>>>> audio frequency realm? And how would you capture them, with a piezo
>>>> contact mic?
>>>
>>> There was a paper on this at LAC 2011, see the proceedings.
>>> <http://lac.linuxaudio.org/2011/?page=download>
>>>
>>
>> again, thanks Fons. For the lazy, the actual sensor device is described
>> at page 160 (170 of the pdf) of the proceedings pdf [1]. It's basically
>> an electret condenser microphone, kept in place by a silicon case that
>> should also filter out external noise. So he's (knowingly) leaving out
>> part of the spectrum, since as he describes earlier in the article
>> muscle sounds are in the 4-45hz range and those mics go down to only
>> about 20.
>>
>> I must say I'm quite surprised to learn muscles make loud enough
>> sounds to be used this way... and this project of his looks freaking
>> cool IMO.
>
> Video of the presentation and direct link to the PDF:
> http://lac.linuxaudio.org/2011/video.php?id=17
> http://lac.linuxaudio.org/2011/papers/30.pdf

coincidence?

http://www.gtcmt.gatech.edu/news/marco-donnarumma%E2%80%99s-xth-sense-named-world%E2%80%99s-most-innovative-new-musical-instrument

Congrats, Marco!
robin

>> renato
>>
>> [1] http://lac.linuxaudio.org/2011/download/lac2011_proceedings.pdf
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Received on Mon Feb 20 00:15:01 2012