Re: [LAU] iPad and Linux audio

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To: Fons Adriaensen <fons@...>
Cc: <linux-audio-user@...>
Date: Sunday, February 19, 2012 - 6:36 pm

On Sun, 19 Feb 2012 17:53:37 +0000
Fons Adriaensen wrote:

> On Sun, Feb 19, 2012 at 04:11:55PM +0100, Renato wrote:

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.

renato

[1] http://lac.linuxaudio.org/2011/download/lac2011_proceedings.pdf
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Messages in current thread:
[LAU] iPad and Linux audio, Ralf Mardorf, (Fri Feb 3, 7:14 pm)
Re: [LAU] iPad and Linux audio, Paul Davis, (Fri Feb 3, 7:18 pm)
Re: [LAU] iPad and Linux audio, Bill Gribble, (Fri Feb 3, 7:31 pm)
Re: [LAU] iPad and Linux audio, Ralf Mardorf, (Fri Feb 3, 7:29 pm)
Re: [LAU] iPad and Linux audio, Nick Copeland, (Fri Feb 3, 8:37 pm)
Re: [LAU] iPad and Linux audio, carmen, (Fri Feb 3, 10:44 pm)
Re: [LAU] iPad and Linux audio, Paul Davis, (Fri Feb 3, 8:44 pm)
Re: [LAU] iPad and Linux audio, Nick Copeland, (Fri Feb 3, 9:45 pm)
Re: [LAU] iPad and Linux audio, Ralf Mardorf, (Sat Feb 4, 10:22 am)
Re: [LAU] iPad and Linux audio, Ralf Mardorf, (Sat Feb 4, 8:49 am)
Re: [LAU] iPad and Linux audio, Fons Adriaensen, (Fri Feb 3, 10:51 pm)
Re: [LAU] iPad and Linux audio, Paul Davis, (Sat Feb 4, 2:43 am)
Re: [LAU] iPad and Linux audio, Nick Copeland, (Sat Feb 4, 1:35 pm)
Re: [LAU] iPad and Linux audio, Paul Davis, (Sat Feb 4, 3:00 pm)
Re: [LAU] iPad and Linux audio, Hartmut Noack, (Sat Feb 4, 10:58 pm)
Re: [LAU] iPad and Linux audio, Paul Davis, (Mon Feb 6, 11:22 pm)
Re: [LAU] iPad and Linux audio, James Morris, (Sun Feb 19, 2:59 pm)
Re: [LAU] iPad and Linux audio, Brendan Jones, (Sun Feb 19, 3:44 pm)
Re: [LAU] iPad and Linux audio, Renato, (Sun Feb 19, 3:14 pm)
Re: [LAU] iPad and Linux audio, Fons Adriaensen, (Sun Feb 19, 5:53 pm)
Re: [LAU] iPad and Linux audio, Renato, (Sun Feb 19, 6:36 pm)
Re: [LAU] iPad and Linux audio, S. Massy, (Mon Feb 20, 3:50 am)
Re: [LAU] iPad and Linux audio, Egor Sanin, (Mon Feb 20, 3:53 pm)
Re: [LAU] iPad and Linux audio, Robin Gareus, (Sun Feb 19, 6:58 pm)
Re: [LAU] iPad and Linux audio, Robin Gareus, (Sun Feb 19, 8:34 pm)
Re: [LAU] iPad and Linux audio, Jörn Nettingsmeier, (Tue Feb 7, 12:04 pm)
Re: [LAU] iPad and Linux audio, Hartmut Noack, (Tue Feb 7, 8:47 am)
Re: [LAU] iPad and Linux audio, Renato, (Tue Feb 7, 12:04 am)
Re: [LAU] iPad and Linux audio, , (Tue Feb 7, 12:10 am)
Re: [LAU] iPad and Linux audio, Paul Davis, (Tue Feb 7, 12:15 am)
Re: [LAU] iPad and Linux audio, Harry van Haaren, (Tue Feb 7, 12:22 am)
Re: [LAU] iPad and Linux audio, Alexandre Prokoudine, (Thu Feb 9, 11:13 am)
Re: [LAU] iPad and Linux audio, Hartmut Noack, (Fri Feb 10, 9:33 am)
Re: [LAU] iPad and Linux audio, Patrick Shirkey, (Fri Feb 10, 1:11 am)
Re: [LAU] iPad and Linux audio, david, (Tue Feb 7, 8:01 am)
Re: [LAU] iPad and Linux audio, Burkhard Wölfel, (Thu Feb 9, 9:52 am)
Re: [LAU] iPad and Linux audio, Leigh Dyer, (Tue Feb 7, 12:43 am)
Re: [LAU] iPad and Linux audio, Paul Davis, (Tue Feb 7, 12:29 am)
Re: [LAU] iPad and Linux audio, Harry van Haaren, (Tue Feb 7, 1:01 am)
Re: [LAU] iPad and Linux audio, Paul Davis, (Tue Feb 7, 12:07 am)
Re: [LAU] iPad and Linux audio, Patrick Shirkey, (Tue Feb 7, 12:44 am)
Re: [LAU] iPad and Linux audio, carmen, (Tue Feb 7, 1:11 am)
Re: [LAU] iPad and Linux audio, Patrick Shirkey, (Tue Feb 7, 1:39 am)