I can confirm that if my FIR taps are defined as:
(0,)*delay+(1,)+(0,)*(19-delay)
then i can change the delay dynamically for any values between 0 and 19
in the grc file that i sent earlier (attached here as well) EVEN
without the second (trivial)
FIR filter present!
So it is clearer now that
Marcus,
The grc file that i sent does not support your theory:
I have 2 filters:
one with taps: (0,)*delay+(1,)
and the other with taps (1,)+(0,)*delay
then I can change the delay dynamically, which also means that the
history is also changed dynamically (NOT ONLY AT INIT) and there is no
On 11/15/2011 07:24 PM, Achilleas Anastasopoulos wrote:
Marcus,
The grc file that i sent does not support your theory:
I have 2 filters:
one with taps: (0,)*delay+(1,)
and the other with taps (1,)+(0,)*delay
then I can change the delay dynamically, which also means that the
history is also
On Tue, Nov 15, 2011 at 16:44, Marcus D. Leech mle...@ripnet.com wrote:
But clearly, there's some brokenness there, and it's not clear to *me* how
to fix it, although I desperately want dynamically-settable
gr_delay() blocks to work as well, for some interferometry work.
Sorry, I've been
On 11/15/2011 11:19 PM, Johnathan Corgan wrote:
On Tue, Nov 15, 2011 at 16:44, Marcus D. Leech mle...@ripnet.com
mailto:mle...@ripnet.com wrote:
But clearly, there's some brokenness there, and it's not clear to
*me* how to fix it, although I desperately want dynamically-settable
On 11/15/2011 12:00 PM, Achilleas Anastasopoulos wrote:
I made a simple example with a cosine and a delayed version of that
going through
a multiplier, and observing the output together with a slider that
changes the delay dynamically.
However i do not see any change (eg, elimination of the
I made a simple example with a cosine and a delayed version of that
going through
a multiplier, and observing the output together with a slider that
changes the delay dynamically.
However i do not see any change (eg, elimination of the dc component
when delay ~ pi/2).
Looking at the code of the
On 15/11/2011 3:00 PM, Achilleas Anastasopoulos wrote:
I made a simple example with a cosine and a delayed version of that
going through
a multiplier, and observing the output together with a slider that
changes the delay dynamically.
However i do not see any change (eg, elimination of the dc
I actually tried using filters to implement the delay and they do NOT
work as expected:
I used Interpolating FIR filter with taps equal to (0,)*delay+(1,)
and i didn't see any difference as i was changing the delay parameter
dynamically
Achilleas
On Tue, Nov 15, 2011 at 3:05 PM, Marcus D.
On 11/15/2011 05:01 PM, Achilleas Anastasopoulos wrote:
I actually tried using filters to implement the delay and they do NOT
work as expected:
I used Interpolating FIR filter with taps equal to (0,)*delay+(1,)
and i didn't see any difference as i was changing the delay parameter
Take a look at the attached grc file:
As implemented, it does not work (changing the delay does not have an effect).
If I introduce the fictitious filter (1,0,0,0,0,..)
it works as expected.
AM I doing something wrong in the first case?
Achilleas
On Tue, Nov 15, 2011 at 5:26 PM, Marcus D.
On 11/15/2011 06:16 PM, Achilleas Anastasopoulos wrote:
Take a look at the attached grc file:
As implemented, it does not work (changing the delay does not have an effect).
If I introduce the fictitious filter (1,0,0,0,0,..)
it works as expected.
AM I doing something wrong in the first case?
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