Gnuradio/Wav to Waterfall: Difference between revisions
From charlesreid1
(Created page with "This covers my first foray into signal decoding with SDR and gnuradio. =Recording the Signal= I basically wanted to record a signal from an Amateur Radio WebSDR station, and...") |
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Okay, now I had a wave file with a recording of a signal. But what information was contained in the recording? | Okay, now I had a wave file with a recording of a signal. But what information was contained in the recording? | ||
==Getting Info about the Wav File== | |||
You can use the <code>mediainfo</code> utility to get some info on the wav file: | |||
<pre> | |||
$ mediainfo websdr_recording_2015-08-17T09-22-01Z_7047.4kHz.wav | |||
General | |||
Complete name : websdr_recording_2015-08-17T09-22-01Z_7047.4kHz.wav | |||
Format : Wave | |||
File size : 308 KiB | |||
Duration : 19s 680ms | |||
Overall bit rate mode : Constant | |||
Overall bit rate : 128 Kbps | |||
Audio | |||
Format : PCM | |||
Format settings, Endianness : Little | |||
Format settings, Sign : Signed | |||
Codec ID : 1 | |||
Duration : 19s 680ms | |||
Bit rate mode : Constant | |||
Bit rate : 128 Kbps | |||
Channel(s) : 1 channel | |||
Sampling rate : 8 000 Hz | |||
Bit depth : 16 bits | |||
Stream size : 308 KiB (100%) | |||
</pre> | |||
Revision as of 23:21, 17 August 2015
This covers my first foray into signal decoding with SDR and gnuradio.
Recording the Signal
I basically wanted to record a signal from an Amateur Radio WebSDR station, and figure out how to import it into gnuradio for signal analysis. Recording the signal was easy - the web interface actually has a recording capability. So it's as simple as clicking a button.
The Wav File
Okay, now I had a wave file with a recording of a signal. But what information was contained in the recording?
Getting Info about the Wav File
You can use the mediainfo utility to get some info on the wav file:
$ mediainfo websdr_recording_2015-08-17T09-22-01Z_7047.4kHz.wav General Complete name : websdr_recording_2015-08-17T09-22-01Z_7047.4kHz.wav Format : Wave File size : 308 KiB Duration : 19s 680ms Overall bit rate mode : Constant Overall bit rate : 128 Kbps Audio Format : PCM Format settings, Endianness : Little Format settings, Sign : Signed Codec ID : 1 Duration : 19s 680ms Bit rate mode : Constant Bit rate : 128 Kbps Channel(s) : 1 channel Sampling rate : 8 000 Hz Bit depth : 16 bits Stream size : 308 KiB (100%)