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From: | james jordan |
Subject: | Re: how to generate a certain band width white noise |
Date: | Mon, 22 Mar 2021 04:56:42 +0000 |
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?
From: james jordan <james.jordan.999@hotmail.com>
Sent: Monday, March 22, 2021 12:42 PM To: Ron Economos <w6rz@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.com@gnu.org> on behalf of Ron Economos <w6rz@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:
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