[Speex-dev] Microphone database

Thorvald Natvig thorvald at natvig.com
Mon Dec 14 12:00:13 PST 2009


I'm currently in the bootstrap phase of compiling a database of impulse 
responses of common end-user microphones (specifically those on 
headsets). With this, it is in theory possible to correct some of the 
aspects of the microphones, processing the signal to be closer to that 
of a studio microphone. The motivation is simple; no matter how 
expensive and perfect my headset is, everything still sounds like crap 
if the user at the other end has a $15 headset.

The current idea is detailed at 
http://mumble.sourceforge.net/MicrophoneDatabase (along with a few 
issues we could use help with).

Assuming the owners of the acoustics lab agrees, I plan to publish the 
recordings under the BSD license along with some simple matlab/octave 
code to create a inverse filter (and the C code to apply it at runtime). 
If anyone here has some suggestions or ideas (or want to send us 
headsets to test), I'd love to hear it :)

Best Regards,

More information about the Speex-dev mailing list