Re: [Discuss-gnuradio] nlog10: do we consider "normalizes log10(x <= 0) to -18" as API?

On Mon, Nov 20, 2017 at 7:52 AM, Marcus Müller wrote: > I was about to commit a PR VOLKizing nlog10 [1], but it struck me that > my processor (imho, correctly) says that log(0) == nan and log(-10) == > nan. > > Whereas the old nlog10 test case asserts that it's log_10(x<=0) ==

Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex

In my case, the underflow issue was fixed by moving my bpsk transmit chains from host to fabric. Basically the new flow graph only generates samples on the PC. In your case it looks like your simply pulling samples from file, right? couple things to check: take a look at cpu usage when running

Re: [Discuss-gnuradio] Problems with WXGUI

Hi Marcus, Thanks for your advice. Here are all the messages from gnu radio companion. The symptoms are very easy to reproduce. The block I tested is simply a connection between Signal Source (1KHz) and Audio sink, selecting the wxgui Generating:

[Discuss-gnuradio] Problems with WXGUI

On 11/20/2017 03:07 PM, Glen Langston wrote: Hello I’m wondering if anyone else is having the same trouble with wxgui in Gnuradio. I’ve installed gnu radio on several MacBooks and ubuntu systems. I’ve got an application we’ve been using for years that uses wxgui Now I’ve tried to upgrade

Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex

Hello I’m wondering if anyone else is having the same trouble with wxgui in Gnuradio. I’ve installed gnu radio on several MacBooks and ubuntu systems. I’ve got an application we’ve been using for years that uses wxgui Now I’ve tried to upgrade to get access to a new SDR but the software is

Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex

That was it. I overlooked that setting your setup. Hopefully the last issue. I'm still getting a lot of under flow errors when I use the same radio (A/B ) for a rx and tx block. I have a WBX daughter board in there so simultaneous rx-tx should not be a problem. As mentioned earlier, I was

Re: [Discuss-gnuradio] X310 with 2 WBX in full duplex

I've had this error before, can't recall the solution however one thing to try is setting the DDC block select parameters. On the upper DDC block set block select to 0 and on the lower DDC set the block select to 1. (sometimes the auto-select function fails to work correctly I think). On Mon, Nov

[Discuss-gnuradio] nlog10: do we consider "normalizes log10(x <= 0) to -18" as API?

Hi Folks, I was about to commit a PR VOLKizing nlog10 [1], but it struck me that my processor (imho, correctly) says that log(0) == nan and log(-10) == nan. Whereas the old nlog10 test case asserts that it's log_10(x<=0) == -18. So, am I allowed to break that assertion for the greater

Re: [Discuss-gnuradio] Frequency recovery of known signal

Hi Mohammad, multiplying with a tone is, mathematically, a frequency shift! So, maybe you'd want to multiply your input signal with your error frequency? You could also estimate the frequency of your tone (there's different ways of doing that), and generate a complex tone (with the frequency