On 02/14/2013 02:14 PM, Fons Adriaensen wrote:
On Thu, Feb 14, 2013 at 01:40:23PM +0100, Brendan Jones wrote:
Just personal preference, but I think both of these have an
unacceptable amount of hissing that is not present in the original.
The original had most of the signal above 2kHz or so almost gone, so
this had to be boosted. Tape hiss gets amplified in the same way (this
was a _casette_ recording). It's probably possible to remove some of
the hiss using an FFT-based multiband expander.
Can you explain what you did exactly
Second order shelf filter, +12 dB or so at 4 kHz and above. There were
some faint traces of signal around 8 kHz, so a very narrow band around
that frequency was boosted a few dB more.
BTW: Do there exist noise removal tools building on the Independent
Component Analysis or similar approaches? Basically using statistics to
separate signal and uncorrelated noise.. Any open source tools?
Flo
--
Florian Paul Schmidt
http://fps.io
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@xxxxxxxxxxxxxxxxxxxx
http://lists.linuxaudio.org/listinfo/linux-audio-user
