Alfred,

 Just for a point of reference, how are you connected to your radio?

Ie.. are you USB, LAN cable, or via a digital interface of some kind?

I am using an HPSDR radio attaching to my radio via a LAN cable, and I have
heard from others as well that are USB attached that they saw an increase in
CPU in the 700/700b modes.

But I do not see that increase at all in my environment.

Thanks,

Walter/K5WH

-----Original Message-----
From: wully [mailto:[email protected]] 
Sent: Wednesday, September 02, 2015 1:59 PM
To: [email protected]
Subject: [Freetel-codec2] 700B mode seems to use much more cpu cycles in rx
than the 1600mode

Hi

I am experimenting further with the 700B mode. It seems that this mode uses
quite a bit of cpu cycles during rx, substantially more than the
1600 mode. I am using a relatively slow cpu, which runs my sdr code at about
20-25% cpu in SSB, when I switch to 700B rx, the cpu increases to about
45-50%.

I assume, that the 700B makes extensive calculations?


Question about SNR-estimation:

I just display the value codec2snr that I get from calling

int codec2sync;
float codec2snr;

freedv_get_modem_stats(freedvRx,&codec2sync,&codec2snr);

What are the typical values that should appear?

Thanks
Alfred, hb9epu



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