[linux-audio-dev] FOSS-tools for realtime audio analysis?

Alfons Adriaensen fons.adriaensen at alcatel.be
Wed Apr 6 13:00:45 UTC 2005

On Wed, Apr 06, 2005 at 12:32:20PM +0000, mathias_lundgren at bredband.net wrote:

> Are there any tools/libraries around which makes it possible to do 
> something like this? 
> 1) Feed an audio signal (f.ex. a sinus wave) into external hardware 
> 2) Record the signal returned from the external hardware 
> 3) "Compare" the two signals (realtime would be neat, if you know what 
> latency you have btwn output/input I hope this might be achieved w 
> Jack) and perform some kind of analysis of what the external hardware 
> does to the signal (S/N ratio, damping, etc etc). 

You may mave a look at JAAA, (JACK and ALSA Audio Analyser). This is a
realtime 'technical' (rather than musical) spectrum analyser, designed
to make accurate measurements. It will also generate sines and white
Gaussian noise. It's at


You will also need some small shared libs available from the same

I'm considering some additional functionality, and if you have any
specific requirements I'd be interested to know.

I am also working on a Room Impulse Response measurement system using
a sine sweep as the stimulus. First release expected in a about two


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