Comparing frequency in a digital waveform?
Posted on Feb 26, 2010 under Digital news and reports |I was wandering if there was a free program to display a binary input at different frequencies. I know I can do this with a pencil and paper but I am writing a report and would like to present three different frequencies in my word document as an image. My waveform is 10100000101 = 41= ascii A at 8.8kHz, 9.6kHz and 10.5kHz. I would like to display the time high and time low at each frequency with the same end time and show the expansion and compression of the high and low frequencies.
February 26th, 2010 at 7:57 am
have you tried audacity?
February 26th, 2010 at 7:57 am
Probably the easiest way to get a picture into a word report is use a spreadsheet. You will have to set up the numbers to draw the graphs yourself but the spreadsheet can do the arithmetic to scale to 3 different frequencies etc.
If you don’t have Excel, OpenOffice is free.
Audacity (in the other answer) is a program for working with digital audio. it will "plot" waveforms, but unless you were going to capture the output of a "real" serial data link transmitting the letter A, it’s not what you want.
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