Saw this info on THIS POST https://www.rcgroups.com/forums/show...postcount=3857
Just wanted a place to save it.
Just wanted a place to save it.
Quote:
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I use:
"Video DownloadHelper" add-on for FireFox browser to download Youtube videoclips if necessary. Anyvideoconverter to create .wav files. http://download.cnet.com/Any-Video-C...-10661456.html (remember to untick spam install during installation) Click on Output profile and Audio files. Then choose *.wav File > Set output folder, otherwise you won't find the .wav file. I use this to view the frequency spectrum: Cool Edit Pro 2.0 http://www.oldapps.com/CoolEdit.php (Evaluation keeps on working and allows spectral views) File > Open Waveform View > Edit Waveform view View > Spectral view Options > Settings > General : Select mouse arrow. Zoom in on an area with a speed pass. Options > Settings > Display : Increase resolution. Play around with the other settings until speed pass curves are easy to see. Any of the octaves/harmonics that are clear can be used. I usually check two or three and compare values. If you read the frequencies accurately the speeds should be within a decimal of each other. Read coming and going frequencies off the spectral view. Point with the mouse and read the value displayed in the bottom of the screen. If coming and going lines are not very thin, point the mouse to the centre of the line. Punch the frequencies and temperature into jfinch's spreadsheet: https://www.rcgroups.com/forums/show...7&postcount=20 It takes a few minutes but is worth it. Example of Cool Edit spectral view:  |
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The completed project.
