I went and tried an Excel spreadsheet and was wondering about the precision of the .csv file can be. When I save the file as .csv I can only get 2 decimal places. Is this enough to carry over to PS? When I do I get a lot of spurs in the waveform and I'd assume these are from imprecise data. I tried to pick a step size that gives even steps relative to the frequencies I'm using (1024 Hz for the audio and 524288 Hz for the carrier).
Any ideas on something like this?