[SciPy-User] Making sweep wave with numpy/scipy

[otrov at hush.ai]

I've settled a bit at chirps, and results are as expected.

I wanted to go little further while I'm in console and maybe 
generate that beautiful 'sweep poly' (shown as last example). 
However while chirps looks in spectrogram like shown in F/t graph, 
this last example in spectrogram looks like straight line. (In all 
examples I just dumped 'w' array in WAV file)

There is probably a obvious reason for that, but I don't know it.
Can that last sin F/t graph be translated in spectrogram of created 
WAV file somehow?

Thanks :)

On Tue, 10 May 2011 15:02:31 +0200 Warren Weckesser 
<warren.weckesser at enthought.com> wrote:
>
>Take a look at scipy.signal.chirp:
>    http://www.scipy.org/Cookbook/FrequencySweptDemo
>
>Warren
>