Beta Zero wrote:
>>> I still don't see how I can type a Unix command in, while I am in the
>>> "Terminal" line editor, (that is, I understand, called "Darwin") and
>>> still, somehow, manipulate .WAV or .RAW files. Can you give me an
>>> example, please? We all know that the Mac OS X can manage sound just
>>> fine. But doing it from the "Terminal" line editor? How would I do
>>> that? Talk me through it slowly. First, I move the mouse down to the
>>> 'terminal' icon and click it. A window opens up, and I can type stuff
>>> in. What am I to do next, aside from typing 'exit'?
>>>
>> <http://homepage.mac.com/machiavel/Text/audio.html>
>
> Thanks for the link; I'll check it out as soon as I get back to my
> Mac's webbrowser.
>
> Now, since I'm a little hard of hearing, I need to examine sound
> samples in such a way that I can get a numeric value back. A real
> world number, in a very practical sense, I mean. Hence my interest in
> Unix. I guess it's what you'd call spectral analysis, and digital
> signal processing. For instance, if there are going to be a bunch of
> frequencies outside of my hearing range, and I won't actually be able
> to hear them, I'd like to know which frequencies they are, in terms of
> actual numbers, and then use a low-pass filter to cut them off.
>
OK - I'm not sure why you'd want to do this from the command line though
? There must be plenty of GUI sound apps out there already that will let
you do spectral analysis and filtering etc.
Paul
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