-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > Btw, this restriction frustrating. Someone would like to make > useful graph > containing both audio source and sink in single chain, but it's impossible > due to current GNU Radio design. As I told you before: That's plainly not true. There are a lot of flowgraphs that have both hardware sources and sinks. Why your's not working is a mystery to me, because, seriously, audio sample rates should pose no problem for a moderately capable PC, unless you do something complicated.
> I think it would be better to implement such scheduler which do > synchronization itself (using software generator or some external > source provided by user). The scheduler is a *scheduler*, it schedules the calling of the work functions. I don't think you realize the implications of designing a per-sample real-time signal processing framework. It basically eradicates the possibility of having variable computational costs in each block. And, by the way, I think you over-estimate the real-time abilities of modern operating systems on modern PC hardware. If you want to have a guaranteed "sample clock" in GNU Radio, you would need HUGE amounts of spare computational power. That'd be a waste. GNU Radio works on *blocks* of samples. This implies latency, and makes it impractical to say "ok, that single sample always comes every x µs", but it gives you the advantage of a buffer, so that you can have actual hardware interaction with your SDR. Having a hardware defined sample rate basically does exactly what you want. And: If you're looking for an innovative GNU Radio scheduler, look into GRAS (GNU Radio advanced scheduler), it has a different model of block interaction, but of course /can't/ take the route of time-synchronous per-sample processing. That's just anti-SDR, to be honest. Greetings, Marcus -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSoFKrAAoJEAFxB7BbsDrL0KgH/RDZztwlNgpbwgk5ggrH+ZJB 7ROXUtAxr7mMoiIXwDe6cMPXJ9uN7ykZImCFYBQguadFzPbRaa5aPg1ALbF7eRoi 6odFqi4t3bUTpD0a1KO2KTfCEF7HeLnsQ9CkspxLw1BakOf0Pnw+1+HtIpu2PRpw OKloxGJcH5RUcQpDp99QCYFX1OYpJ8gTE4EOmY+lWFXK2MQxwtce4CiDcV7Ue1YQ eHycxGjwayYN9hWZWrSN169EbJ2QcBQT4VsR32xmADHBqvYK6eb0u/Zheh5HPmNj HOZSmbWGgkNNTjgMR9+TDYnJgqAXG2w1ar4rHp6PHgb5n1kyhW5WKyylMV4psKg= =XpsW -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
