On 12/30/2011 02:17 AM, Paulo da Silva wrote:
Hi,
Sorry if this is a FAQ, but I have googled and didn't find any
satisfatory answer.
Is there a simple way, preferably multiplataform (or linux), of
generating sinusoidal/square waves sound in python?
Thanks for any answers/suggestions.
If you're willing to be Linux-only, then I believe you can do it without
any extra libraries.
You build up a string (8 bit char, on Python 2.x) of samples, and write
it to "/dev/audio". When i experimented, I was only interested in a
few seconds, so a single write was all I needed.
Note that the samples are 8 bits, and they are offset by 128. So a zero
signal would be a string of 128 values. A very quiet square wave might
be a bunch of 126, followed by a bunch of 130. and so on. And the
loudest might be a bunch of 2's followed by a bunch of 253's.
You'll have to experiment with data rate; The data is sent out at a
constant rate from your string, but I don't know what that rate is.
--
DaveA
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