15 Jan
2013
15 Jan
'13
9:21 a.m.
On Mon, Jan 14, 2013 at 07:09:56PM -0800, Ivan K wrote:
I want to write a simple application that can open a
.wav file
(stereo or mono), grab the header, and then read and dump
the sample values from a portion of the .wav file to an ascii data
file (I want to plot minute portions of the sound file with
application such as gnuplot).
I am most comfortable working in C, though I would
consider working in C++.
All you need is libsndfile and the standard C or C++ libraries.
Note that gnuplot will just plot the sample values, not the
analog waveform represented by them. If the signal contains
significant energy at high frequencies (say FS / 10) just
plotting the samples will provide a poor idea of the waveform.
One solution in that case is to upsample first.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)