On Thursday 09 February 2012 16:01:12 Antti Palosaari wrote: > I have taken radio sniffs from FM capable Realtek DVB-T device. Looks > like demodulator ADC samples IF frequency and pass all the sampled > data to the application. Application is then responsible for > decoding that. Device supports DVB-T, FM and DAB. I can guess both > FM and DAB are demodulated by software. > > Here is 17 second, 83 MB, FM radio sniff: > http://palosaari.fi/linux/v4l-dvb/rtl2832u_fm/ > Decode it and listen some Finnish speak ;) > > Could someone help to decode it? I tried GNU Radio, but I failed > likely because I didn't have enough knowledge... GNU Radio and > Octave or Matlab are way to go. For someone to decode it, you would need to give more information about the format of the stream. Like the sampling frequency, the sample-format and then the IF-frequency. I never did something like myself, but from what I saw in gnuradio there should be everything to make a FM-demod based on the data. regards, -- Patrick Boettcher Kernel Labs Inc. http://www.kernellabs.com/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
