Changes to threhold block

GNU Radio
1

hello
I am new to gnu world
I want to make changes to the threshold block
I want the threshold block to give out as 3.0 or -3.0 in stead of 1.0 or
-1.0.
how can I achieve this?
also I would to know if there is a possibilty i can achieve this using
.py
script file

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2

On Mon, Feb 14, 2011 at 11:29 AM, uday_gnu [email protected] wrote:

hello
I am new to gnu world
I want to make changes to the threshold block
I want the threshold block to give out as 3.0 or -3.0 in stead of 1.0 or
-1.0.
how can I achieve this?
also I would to know if there is a possibilty i can achieve this using .py
script file

I thought threshold outputted 1 or 0. If you want it to output
something else, you could either hack the block itself
(gnuradio-core/src/lib/general/gr_threshold_ff.cc) or add some extra
math blocks after it. The stream is a float, so you could put a
gr_add_const_ff(-0.5), which would convert the output [1 → 0.5] and
[0 → -0.5]. The put this into a gr_multiply_const_ff(6) to convert it
to 3 and -3.

Tom