[linux-audio-dev] Waveform audio API

[Erik de Castro Lopo]

On Sun, 12 Oct 2003 15:22:07 +0200
J_Zar <romaninz at aruba.it>(by way of J_Zar <romaninz at aruba.it>) wrote:

> I'm searching for an audio API to parse a .wav file and show its waveform.
> Someone knows something similar?
> 
> If not, someone could tell me how to do it by myself?
> 
> I mean if I open the file .wav and get one buffer at time, 

libsndfile seems to be the standard:

    http://www.zip.com.au/~erikd/libsndfile/

> what I should do to know its waveform?

Well if you read the samples [1, 2, 3, 4, -4, -3, -2, -1] then the
waveform is something like:

                /|
               / |
              /  |
             /   |
                 |   /
                 |  /
                 | /
                 |/


Erik
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+-----------------------------------------------------------+
  Erik de Castro Lopo  nospam at mega-nerd.com (Yes it's valid)
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