From: Konstantinos B. <kmp...@ec...> - 2011-02-20 10:30:32
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@Markus Thank you for your answer. This is very close to what I intend to do: have each unit operating and streaming for days. I actually want to create a network of devices for animal sound recording. Since my developing skills are not that advanced, I had initially though of using audio streaming software suitable for the embedded operating system. I am interested in your solution. Regards, Konstantinos O/H Markus Svilans έγραψε: > On the audio capture side, I have written code using the ALSA library > for continuously recording audio, using the Overo on-board audio > hardware. It has been run continuously for days and days without a > problem. Let me know if you would like a snippet of sample code. > > As you probably already know, uncompressed single channel audio at > 44kHz, 16 bits per sample, requires a data rate of ~88000 bytes per > second. From what I have seen through working on various other > non-audio projects, I think the wireless network hardware on the Overo > Air/Fire could easily handle that. > > To get your project off the ground, you could probably combine one of > the ALSA example programs, and write some custom TCP/IP server code to > send buffers of captured audio to a remote client computer. For > example from your main() function you could launch a couple of threads > that handle those two tasks, using the producer/consumer structure. > > Regards, > Markus. > > > On 2011.02.19 4:01, Konstantinos Birkos wrote: >> Hello, >> >> I am unfamiliar with the gumstix technology and I would like to >> investigate its applicability in a specific scenario: I would like to >> deploy a wireless network for *high quality audio *(44 kHz, 12+ >> bits)* capturing*. I want to use low-cost, low-energy-consumption >> wireless devices to record sounds and send them over WiFi to a >> distant computer. I was wondering whether gumstix can offer the >> desired functionality. >> >> Thank you >> -- >> Konstantinos Birkos >> PhD Candidate >> Wireless Telecommunication Laboratory >> Department of Electrical and Computer Engineering >> University of Patras >> Patras, Greece >> Tel.: +30 2610 996465 >> >> >> ------------------------------------------------------------------------------ >> The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: >> Pinpoint memory and threading errors before they happen. >> Find and fix more than 250 security defects in the development cycle. >> Locate bottlenecks in serial and parallel code that limit performance. >> http://p.sf.net/sfu/intel-dev2devfeb >> >> >> _______________________________________________ >> gumstix-users mailing list >> gum...@li... >> https://lists.sourceforge.net/lists/listinfo/gumstix-users >> > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: > Pinpoint memory and threading errors before they happen. > Find and fix more than 250 security defects in the development cycle. > Locate bottlenecks in serial and parallel code that limit performance. > http://p.sf.net/sfu/intel-dev2devfeb > ------------------------------------------------------------------------ > > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > -- Konstantinos Birkos PhD Candidate Wireless Telecommunication Laboratory Department of Electrical and Computer Engineering University of Patras Patras, Greece Tel.: +30 2610 996465 |