Please help me сorrectly draw a mshoom on oscillocpe

#1

Hi guys. I tried to make a mushroom in Audacity using this video https://youtu.be/rtR63-ecUNo. And everything went fine, but there were problems with the horizontal

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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?

#2

long time ago, but did you ever find out?

i suspect it could be a missing phase offset on your sawtooth.

concretely: your sawtooth is the values 0,0.01,0.02…1.0,0.99,…0

instead, i supsect, you need something like this: 0.25,0.26,…1.0,0.99,…0.01,0.0,0.01,…0.25

i’m not sure if you need to start at 0.25,0.50 or 0.75 though.