It's for 3.9. Let me regenerate it for 3.7. Hang on.
Ron
On 3/21/21 21:56, james jordan wrote:
Hi Ron,
i open your file and have this error:
Loading: "/home/w/Downloads/whitenoise.grc"
Error:
/home/w/Downloads/whitenoise.grc:1:1:FATAL:PARSER:ERR_DOCUMENT_EMPTY:
Start tag expected, '<' not found
>>> Failure
Traceback (most recent call last):
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/gui/MainWindow.py",
line 278, in new_page
file_path=file_path,
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/gui/NotebookPage.py",
line 47, in __init__
initial_state = flow_graph.get_parent().parse_flow_graph(file_path)
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/core/Platform.py",
line 295, in parse_flow_graph
ParseXML.validate_dtd(flow_graph_file, Constants.FLOW_GRAPH_DTD)
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/grc/core/ParseXML.py",
line 53, in validate_dtd
raise XMLSyntaxError(parser.error_log)
XMLSyntaxError:
/home/w/Downloads/whitenoise.grc:1:1:FATAL:PARSER:ERR_DOCUMENT_EMPTY:
Start tag expected, '<' not found
what is the gnuradio version for this grc?
<http://aka.ms/weboutlook>
------------------------------------------------------------------------
*From:* james jordan <james.jordan....@hotmail.com>
*Sent:* Monday, March 22, 2021 12:42 PM
*To:* Ron Economos <w...@comcast.net>; discuss-gnuradio@gnu.org
<discuss-gnuradio@gnu.org>
*Subject:* Re: how to generate a certain band width white noise
many thanks
------------------------------------------------------------------------
*From:* Discuss-gnuradio
<discuss-gnuradio-bounces+james.jordan.999=hotmail....@gnu.org> on
behalf of Ron Economos <w...@comcast.net>
*Sent:* Monday, March 22, 2021 12:26 PM
*To:* discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
*Subject:* Re: how to generate a certain band width white noise
Here's a flow graph that should get you started. The "width" parameter
controls the bandwidth of the noise (but can't be greater than the
sample rate).
It's using a UHD sink block for an Etttus B210. Use a sink block
that's appropriate for your hardware. Also, be sure to disable the
throttle and null sink when using hardware.
Ron
On 3/21/21 20:27, james jordan wrote:
Hi Kyeong,
thanks for your reply. what is the default bandwidth for noise
source. from my understanding resampler did not modify bandwidth.
<http://aka.ms/weboutlook>
------------------------------------------------------------------------
*From:* Kyeong Su Shin <kss...@postech.ac.kr>
<mailto:kss...@postech.ac.kr>
*Sent:* Sunday, March 21, 2021 5:17 PM
*To:* james jordan <james.jordan....@hotmail.com>
<mailto:james.jordan....@hotmail.com>; GNURadio Discussion List
<discuss-gnuradio@gnu.org> <mailto:discuss-gnuradio@gnu.org>
*Subject:* Re: how to generate a certain band width white noise
Hello Jordan:
Just use a "Noise Source" block and a resampler block (if needed;
best be avoided) to adjust the bandwidth. The quality of your "white
noise" will depend on the resampler and the transmitter hardware, though.
Regards,
Kyeong Su Shin
------------------------------------------------------------------------
*보낸 사람:* james jordan <james.jordan....@hotmail.com>
<mailto:james.jordan....@hotmail.com> 대신 Discuss-gnuradio
<discuss-gnuradio-bounces+ksshin=postech.ac...@gnu.org>
<mailto:discuss-gnuradio-bounces+ksshin=postech.ac...@gnu.org>
*보낸 날짜:* 2021년 3월 21일 일요일 오후 12:40
*받는 사람:* GNURadio Discussion List <discuss-gnuradio@gnu.org>
<mailto:discuss-gnuradio@gnu.org>
*제목:* how to generate a certain band width white noise
Hi,
i want to use white noise to test a certain band. such as 2Mhz band
width white noise. how to do this?
<http://aka.ms/weboutlook>
