Subject: [linux-audio-dev] Re: Exact desicption of PCM system for ALSA
From: Philipp Vollmer (vollmer.philipp_AT_t-online.de)
Date: Fri Jul 12 2002 - 16:43:37 EEST
Hello dear Dr. Nagorni,
Yes I did have a look at this tutorial and it has been quite good,
but I don't understand the signal which is produced there.
I guess this seems to be a digital 101010... signal.
But it sounds like an disordered signal and I don't
understand how to unfluence the volume or the of frequency this signal.
I actually have an algorythm for sine signals but it's too complex
for undestanding.
The problem isn't the interfacing via snd_pcm_open or snd_pcm_writei
but I don't understand the data which is sent.
I think the best for me would be an exact description of the PCM
Signal description system which is also used in Windows Soundcard
interface libraries ( or not? ). Perhaps someone knows good (E)books
or tutorials about that.
73 de DO1YPV ( Philipp Vollmer )
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