Please help me сorrectly draw a mshoom on oscillocpe


Hi guys. I tried to make a mushroom in Audacity using this video And everything went fine, but there were problems with the horizontal

oscillations of the fungus. the video says that you need to multiply the sawtooth by the cosine of a slightly different frequency. I did it in Excel, and then I imported it into Audacity through raw, but it turned out very strange. Please tell me what is wrong with me and how to correctly multiply the cosine by the sawtooth?