[Mataa-info] Problem with sample rate and vector spacing

[Rodolfo T. <pe....@gm...>]

I've already sent this questions to Matthias, and forgot forward to the
list.


1.

I'm having a problem with sample rate definition. I generated a signal:

*[s,t]=mataa_signal_generator('sweep_lin',44100,1,20 20000]*

And then I measured the impulse response:
*
*
*[h,t]=mataa_measure_signal_response(s,44100)*

Since I have two microphones, *h* is a two columns matrix. The problem is
that this matrix is of *h* have more rows than 44100. This is what I got:*

rows(s)*
ans = 44100
*rows(h)*
ans = 52920
*rows(t)*
ans = 52920

I understand why *rows(t)* is equal *rows(h)*, but not why *rows(t)* and *
rows(h)* are different from *rows(s)*. It is beacuse of the null terms
added? I need to solve this so I can use *mataa_deConvolve[h1,s]* and *
mataa_deConvolve[h2,s]* (where *h1* and *h2* are the first and the second
columns of *h*, representing the signals of both microphones).


2. Ignoring the problem of the sample rate, I tried to Fourier transform
signals *h1* and *h2*. I can't do that because the vector *t *is not even
spaced. This is what I got:

*[H1,f]=mataa_realFT0(h1,t)*
error: mataa_t_to_f0: t must be even spaced!
error: called from:
error: /mataa/mataa_tools/mataa_t_to_f0.m at line 40, column 1
error: /mataa/mataa_tools/mataa_realFT0.m at line 70, column 3


Hope you can help me!

Rodolfo.