On Sun, 2009-12-27 14:50:20 +0100, Markus Vogl <markus.vogl@xxxxxxx> wrote: > Von: Jan-Benedict Glaw [mailto:jbglaw@xxxxxxxxxx]: > > On Sun, 2009-12-27 13:26:31 +0100, Markus Vogl <markus.vogl@xxxxxxx> wrote: > > > my project is to analyse the mic input frequency from my asus > > > eepc 1008ha with ubuntu 9.10 and show it in a terminal window. > > > i would use my acoustic 6 string guitar to play in front of my > > > netbook. > > > > > > i´ve testet the howto from linuxjornal.com .. > > > http://www.linuxjournal.com/article/6735 > > > > > > ...but i´ve no plan to use the mic input and then analyse it > > > with fftw. > > > > Why do you need to do ALSA programming in the first place? Isn't > > it enough to use any given ALSA-capable audio recorder (eg. > > arecord) to record some sound, convert it to raw PCM data (eg. cut > > off the WAV header) and then shift all the data into the FFT lib? > > i have to do this in realtime (like a guitartuner) and with my > "project" i have to see the frequency shift in realtime in a > terminal window. Sure. Just let eg. arecord write to stdout or to a FIFO and read the data from there. You can directly request raw output, all you need to do is to shouvle the data through the FTT lib... MfG, JBG PS: I did some clean-up of your TOFU email. -- Jan-Benedict Glaw jbglaw@xxxxxxxxxx +49-172-7608481 Signature of: Eine Freie Meinung in einem Freien Kopf the second : für einen Freien Staat voll Freier Bürger.
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