Please do a simple calculation when you want to set these latency and audio buffers so small to see that the requests are probably ridiculous.
The lower bound on latency in our code is at least 5 ms. That is 480 samples at 96000 sample per second and 240 at 48000. There is absolutely NO REASON to set latencies to 2 ms. We can't use it. At 96000 samples per second set your latency to 5ms on your Firebox and 512 samples on your Delta 44 and your audio buffers to 512. Any problems after that have to be attributable to local conditions (too many paranoia -bots gobbling ticks and blocking the system during disk accesses, etc.). I regularly stress the heck out of the system here. I run my Lynx L22 at 128 sample buffers at 192000 and the display at 50 fps with audio at 256 samples and dsp at 2048. I have to have Avast on demand check out a disc access for a virus action to interrupt this or I have to try and send an email and again Avast sends it through a sniffing process. The ring buffer resets fire and we are straight again in a sec. At the settings I recommended above, I can rock along at 40 wpm, send and receive email and listen to Toby Keith tell me he loves his bar on RealRhapsody and never hear a burp on my 3 GHz pentium. Eric runs at low latency and frames per second at 15 or more for the display, etc. He does this and has been developing on a low frequency celeron which is an abacus in comparison to my computer. He can no longer glitch the audio at all after our threading and buffer stall, etc. fixes in the last two months. BUT, I bet he has a huge difference from many of you. He runs <<NO>> paranoia-bots AT ALL. Take a lesson. If you want to do twelve things and you want to scan every breath for a virus, run google desktop, picassa, spybot, winpatrol, and Zone alarm, you need a fast computer AND a high speed hardware accelerated video card. YOU get to decide. If you want to run PowerSDR on a 1.8 GHz celeron laptop. GO for it. But don't use it to read email, and be ready to sacrifice it to viruses, etc. because these paranoia-bots are extreme hot spot performance killers. Bob -- AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman Time for a new motto, what should I choose? _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
