https://ni.lithium.com/t5/LabVIEW/What-is-the-difference-between-a-spectral-map-and-a-spectrogram/m-p/87507#M53675 <A href="http://zone.ni.com/devzone/conceptd.nsf/webmain/C073B7594BF06F8B86256CE500838DB8?opendocument">Here</A> is a Tutorial on spectrgrams which may be helpful in explaining that side. And <A href="http://www.wisdom.weizmann.ac.il/~yehuda/pubs/spectral.pdf">here</A> is PDF file which explains spectral graphs which could also be helpful. I tried walking through them (not much background in this) and it looks as though spectral graphs are computed differently. This may not be much, but hopefully it can get you started. <BR /> Fri, 30 May 2003 13:44:50 GMT JRA 2003-05-30T13:44:50Z https://ni.lithium.com/t5/LabVIEW/What-is-the-difference-between-a-spectral-map-and-a-spectrogram/m-p/87506#M53674 What is the difference between a spectral map and a spectrogram? <BR /> Thu, 29 May 2003 17:29:17 GMT https://ni.lithium.com/t5/LabVIEW/What-is-the-difference-between-a-spectral-map-and-a-spectrogram/m-p/87506#M53674 Matt P. 2003-05-29T17:29:17Z https://ni.lithium.com/t5/LabVIEW/What-is-the-difference-between-a-spectral-map-and-a-spectrogram/m-p/87507#M53675 <A href="http://zone.ni.com/devzone/conceptd.nsf/webmain/C073B7594BF06F8B86256CE500838DB8?opendocument">Here</A> is a Tutorial on spectrgrams which may be helpful in explaining that side. And <A href="http://www.wisdom.weizmann.ac.il/~yehuda/pubs/spectral.pdf">here</A> is PDF file which explains spectral graphs which could also be helpful. I tried walking through them (not much background in this) and it looks as though spectral graphs are computed differently. This may not be much, but hopefully it can get you started. <BR /> Fri, 30 May 2003 13:44:50 GMT https://ni.lithium.com/t5/LabVIEW/What-is-the-difference-between-a-spectral-map-and-a-spectrogram/m-p/87507#M53675 JRA 2003-05-30T13:44:50Z