Noise/random sources

GNU Radio
1

Forgot to cc the list.
---------- Forwarded message ----------
From: “Jared C.” [email protected]
Date: Sep 26, 2013 7:27 PM
Subject: Re: [Discuss-gnuradio] Noise/random sources
To: “Marcus D. Leech” [email protected]

Calling them with a seed of zero or greater will give the same “random”
stream, seeding with different negative numbers gives different random
sequences.

Jared

2

On Thu, Sep 26, 2013 at 11:08 PM, Jared C.
[email protected] wrote:

sequences.

Jared

On Sep 26, 2013 7:17 PM, “Marcus D. Leech” [email protected] wrote:

When I use multiple noise sources in a flow-graph, each with a different
seed, are they actually independent, or do they just call “random” or
“lrand” or
something, and thus setting different seeds has no effect?

As Jared said, the seed has to be a negative number:
http://gnuradio.org/doc/doxygen/classgr_1_1analog_1_1noise__source__c.html

–
Tom
GRCon13 Oct. 1 - 4
http://www.trondeau.com/grcon13