hearing aid type algorithms (WDRC, noise reduction, ...)

Hello,

does anyone know where I could get speech enhancement algorithms written in
C (typically for hearing aids, but I need that to integrate to a telephony
server for my diploma project)? I'm looking for noise reduction algorithms
and also for dynamic range compression algorithms...

Thank you for reading!

M. Meylan

Mathias,

For the filter, I'd suggest a moving average. It's really cheap on CPU
cycles if done recursively and works extremely well. As for compression,
if you can't figure that out yourself you deserve to fail the course. :)

Rob VK3XVK


Mathias Meylan wrote:
> 
> Hello,
> 
> does anyone know where I could get speech enhancement algorithms written in
> C (typically for hearing aids, but I need that to integrate to a telephony
> server for my diploma project)? I'm looking for noise reduction algorithms
> and also for dynamic range compression algorithms...
> 
> Thank you for reading!
> 
> M. Meylan