Last time I talked about how to calculate a sine sweep mathematically. There's a closed-form solution which is quite elegant but, alas, useless in a practical computer implementation due to the very bug numbers that are being fed to the sin(...) function.
A computer implementation will care only about the discrete samples that need to be generated. The integral in the previous post turns out to be counterproductive - we're much more interested in the infinite sequence of φi, and more particularly in their residue mod 2π.
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