We call this the two-clock problem, and yeah, it's quite common. Cheers, M
On 03/14/2016 11:14 AM, Gregory W. Ratcliff wrote: > GnuRadio community, > > I have been using various hardware interfaces to gnuradio lately. > In the simplest example, I noticed an issue with Funcube Pro Plus with > broadcast wideband FM (about 4 GRC blocks) whereby it would consistently > underflow, even though every rate appeared to be perfect. A crude but > effective fix has been to interpolate by 500, decimate by 499. > > I occasionally notice a similar problem with DVB modules, never with Hermes. > > This has caused me to wonder if some subtle error has crept into OSMOCOM > or the Funcube module has a timing error (that had been masked > previously by OSMOCOM). > > Am I alone in this (in which case I will look closely at usb/audio/pc > hardware)? > > Thanks in advance, > > Greg > NZ8R > > Gregory W. Ratcliff > > > > > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
