hi,
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.
regards markus
-----Ursprüngliche Nachricht----- Von: Jan-Benedict Glaw [mailto:jbglaw@lug-owl.de] Gesendet: Sonntag, 27. Dezember 2009 13:54 An: Markus Vogl Cc: alsa-devel@alsa-project.org Betreff: Re: [alsa-devel] frequency analysis with alsa and fftw
On Sun, 2009-12-27 13:26:31 +0100, Markus Vogl markus.vogl@gmx.net 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?
MfG, JBG