Hi Barry,
on my way to bed, so really quick:
On Thu, 2019-06-20 at 17:48 -0400, Barry Duggan wrote:
> Marcus,
>
> OK, so that works. Now I have more questions!
>
> 1) Since the vector source has a repeat option, why use the Repeat
> block? Does it still need a 'vector to stream' function?
The
Marcus,
OK, so that works. Now I have more questions!
1) Since the vector source has a repeat option, why use the Repeat
block? Does it still need a 'vector to stream' function?
2) What criteria did you use to pick the 4,545 sample rate? If there
were no repeat, what would you do? The repeat o
ha! That's easier than I think you think it is :)
So, you have some hardware to actually transmit. Let's, for the time
being, assume we're doing an acoustocoupler using your soundcard.
That's cool, because a) you very likely have that and b) it's easy to
observe :D
So, you use GNU Radio's Audio S
OK, I think I understand all that (it IS a shift in mind-set from my
history;), BUT, at some point I need to send the bits at a fixed baud
rate (e.g. 45.45). That is what was behind my question #2. Where / how
can I do that?
---
Barry Duggan
On 2019-06-20 09:55, Müller wrote:
Hi Barry,
On
Marcus,
Thank you for that. So now I have three questions:
1) Does it matter if one uses [brackets] or (parentheses) to enclose a
vector? It appears not.
2) What determines the rate at which the vector contents are presented
to the output?
3) If one were to add a 'throttle', where would it go?
Hi Barry,
On Thu, 2019-06-20 at 09:27 -0400, Barry Duggan wrote:
> Marcus,
>
> Thank you for that. So now I have three questions:
> 1) Does it matter if one uses [brackets] or (parentheses) to enclose a
> vector? It appears not.
That's Python syntax; [] means Python list (a mutable sequence of
Ah, I think I see where you're going :)
So, here, we're really talking about digital clock division! That is, a
counter :)
While that'd be totally possible to piece together (counting edges,
then emitting an edge every N input edges), it's not how DSP works: the
things you handle *are* already wit
ry Duggan 대신 Discuss-gnuradio
보낸 날짜: 2019년 6월 20일 목요일 오전 1:55:25
받는 사람: Müller, Marcus (CEL); chris.sylv...@gmail.com
참조: Discuss Gnuradio
제목: Re: [Discuss-gnuradio] Divide frequency by a constant
Marcus, Chris, and others:
What I am really trying to do is replicate a time-domain FSK modem I
de
Marcus, Chris, and others:
What I am really trying to do is replicate a time-domain FSK modem I
designed in 1972 (using discrete components of course). It used a
crystal oscillator at 12,770 hz (square wave) and divided that by 5 and
then ANDed with the input signal. The other path divided by
Hi Barry,
I don't know whether I'm following your intent, but I assume you have a
Variable in GRC called "frequency_a", at say value 99 and you want to
have a signal source block that you want to run at frequency 9?
In that case, you can literally put
frequency_a / 11.0
in that frequency field
; blocks. A good source:
http://blog.sdr.hu/grblocks/xlating-fir.html
Cheers,
Jonas
-Original Message-
From: Discuss-gnuradio
[mailto:discuss-gnuradio-bounces+jonas.manthey=u-blox@gnu.org] On Behalf Of
Barry Duggan
Sent: Dienstag, 18. Juni 2019 16:02
To: Discuss Gnuradio
Subject: [Discuss-g
Is there a way to divide a frequency by a constant? I'm not referring to
sample rate decimation, but rather to a signal source frequency. For
example, input frequency_a,
output frequency_a / 11.
Thanks.
--
Barry KV4FV
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