Liquid dsp On Thu, Feb 13, 2014 at 6:04 AM, Marcus Müller <[email protected]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi Przemek, > well, since this is the open source world, you shouldn't need to write > everything from scratch. > You can of course start off with Martin Marinov's source code, > https://github.com/martinmarinov/rtl_tcp_andro- > which will give you an tcp server serving samples (the code says it's > a port of rtl_tcp from the rtl-sdr package); from there on it's java > all the way down ;) > However, I'd expect the average smartphone not to be the device you'd > want to do FFT on, in Java, which doesn't even offer you access to > your own memory, but then again I have no clue about android and if it > offers any accelerators for stuff like that. Googling FFT Java turned > up quite a bit, so I think you'd might be in luck ;) Generally, as I > understand the situation with rtl_tcp_andro, you'll need C code to > interact with the device (makes sense to me) and then you're free to > use basically every C lib (and most probably even C++) you want within > the restriction imposed by hardware and android, which, for signal > processing, shouldn't be harsh. > > So: Happy hacking, > Marcus Müller > > On 12.02.2014 17:37, Przemysław Pawełczak wrote: >> Hello, >> >> This is my first post to this mailing list and my apologies if I >> ask a lame/irrelevant question. Unfortunately, me and my hacking >> friend could not find the answer to the issue we are trying to >> solve (Google, etc.) so here is my post. >> >> We want to implement the most fundamentally simple spectrum >> sensing algorithm (energy detector for example) directly on Android >> device, where our raw I/Q samples are gathered through RTL-SDR >> dongle ( http://sdr.osmocom.org/trac/wiki/rtl-sdr). >> >> Yes, we are aware of http://sdr.martinmarinov.info - but this is >> not what we want. What we want is a set of functions (FFT, etc.) >> that will do the signal processing/signal detection directly on >> Android. Thus - we don't want (wish we could) any Gnu Radio >> wrappers. Ideally - we look for Java-based implementation of the >> thing described above. >> >> Thus - is there anything out there that we can use or we need to >> write all from scratch? >> >> Best regards, Przemek >> >> >> >> _______________________________________________ Discuss-gnuradio >> mailing list [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJS+8XMAAoJEAFxB7BbsDrLPVsH/1gP/TvkANDxKsPJG7xJmHq5 > vHeh62OfCJuHqMiIYOk+CnAYfAFgwGsgYQl2EAqZIKHWA6CDaWvq+Ds1sKIuslPY > fW+bIXcM+QkWkskypdrogGANQArd3sS7tJ0ToiNMkIIX0iTKzHh81nKjSGi3neSt > 9YqYAhqMbQtUBKQw5/ArOTrqkYpis6gwNCcu58Bdmshr8+cud7i/ZRIuqTD1kiv1 > h0ZUxHIIWA1IMFJDH/21FKZJ2VBJlZ61BIE26WGpB13Vvva3VMmm4AinTZ6nZTo+ > S0ZVIXKtbwuAbSJf7jZPHZhCe7auW59Ja6btKbAm/ToljQ7Vy5VOxN4dAseKcV0= > =c7a4 > -----END PGP SIGNATURE----- > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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