audio_alsa driver -- robust?

[Paul F. <pg...@fo...>]

can anyone comment on the audio_alsa driver's general usefulness? 
(i'm also bcc'ing the author of the driver, andrew zabolotny, in
case he's not on the list.)

i've made myself an input sensor (as described in ir-audio.html),
and irrecord makes an attempt to read it, but isn't very
successful.  i don't see many references to the audio_alsa driver
in the archives, so i'm wondering how well exercised it's been.

the waveforms i get with arecord look a little odd -- it looks
like the signal is spiking down in between consecutive 1 bits:
    http://www.foxharp.boston.ma.us/tmp/irwave.jpg
(that's not the full button-press sequence -- it's a zoom of part of
the middle.) i'm wondering if those extra zero crossings are
confusing the algorithm in hw_audio_alsa.c.  the remote is one
i've used very successfully with a serial port receiver for many
many years.  (like, about 10 years.  wow!)

for what it's worth, the IR part i'm using is a panasonic PNA4602M:
    http://www.rentron.com/Files/pna4601m.pdf

i'd be happy to hear any suggestions.  

paul
p.s.  there's a typo in the html doc page for audio_alsa:
    http://www.lirc.org/html/audio-alsa.html
the line that says: 
    lircd -d hw@11025 file
should say this instead:
    irrecord -d hw@11025 file

p.p.s.  that page, btw, is very difficult to find in the docs. 
perhaps there could be a link to table.html from the main page? 
i think it would be quite useful as a reference.

=---------------------
 paul fox, pg...@fo... (arlington, ma, where it's 55.2 degrees)