Hi I think you will find that the 2020 is a bit noisy above 20 KHz...
Also there are a lot of chips that drop in a ~40 KHz low pass filter when sampling at 196 KHz. It's a brick wall, so you get near nothing above the cutoff frequency. Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ehydra Sent: Thursday, March 15, 2012 2:44 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] broadband MPX signal stereo I heard a broadband sound-card like EMU0202 should work. I asked because of the various people on the list with expensive test equipment one should be able to record a good sample. Looks there is no interest. - Henry Azelio Boriani schrieb: > Are you sure that a .WAV file can support the full MPX stereo and RDS > signal? I suspect that you need raw samples that a sound card can't handle. > The output of a FM stereo and RDS radio discriminator are beyond the usual > audio bandwidth. The output of the discriminator full bandwidth is first > used by the RDS decoder and then (partially filtered) by the stereo deMPX > and then by the audio processor. > > On Thu, Mar 15, 2012 at 2:08 AM, ehydra <[email protected]> wrote: > >> Hi! >> >> I'm looking for a sampled wave-file from a radio receiver MPX-signal >> including the RDS frequency band around 57KHz. I searched the Net but found >> just nothing that worked. >> >> So I ask here. Maybe someone has the possibility to sample a couple of >> seconds. -- ehydra.dyndns.info _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
