[Numpy-discussion] Creating a sine wave with exponential decay

[Ram Rachum]

Hi everyone! Total Numpy newbie here.

I'd like to create an array with a million numbers, that has a sine wave
with exponential decay on the amplitude.

In other words, I want the value of each cell n to be sin(n) * 2 ** (-n *
factor).

What would be the most efficient way to do that?

Someone suggested I do something like this:

y = np.sin(x) * np.exp(newfactor * x)

But this would create 2 arrays, wouldn't it? Isn't that wasteful? Does
Numpy provide
an efficient way of doing that without creating a redundant array?


Thanks for your help,

Ram Rachum.
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